As shown in Figure 8, this circuit can be used in some automatic control systems. If you are looking for a low voltage operational amplifier (3V and above) IC which can work on single and dual power supplies with wide range of frequencies and with minimal power consumption, then LM324 can be the best suited for your design. The first stage consists of one of the LM324's four op amps and has a gain of 110 times. D... AD620 Instrumentation Amplifier: Pinout, Circuit, Parameters [FAQ]. Aspencore Network. Schematic diagram (LM124, LM224, LM324, one channel) LM124, LM224x, LM324x Pin connections and schematic diagram DS0985 - Rev 8 page 3/22 . Because the in-phase terminals of each op amp are grounded through the R junction of R1～R4 and R5 and BG, each op amp outputs a low level; When AN1 is pressed, R6 and R1 divide voltage (because the voltage of C cannot be abruptly changed, BG has not been turned on), so that the non-inverting input terminal of the operational amplifier IC-1 generates a certain voltage. https://www.apogeeweb.net/circuitry/lm324-op-amp-circuits.html The circuit can be operated at 4.5Volts to 12Volts DC. The circuit is highly stable and is also known to produce a reasonable output of 12 Watts on a 4 Ohm speaker. Among them, resistors R1, R1ˊ constitute a voltage divider circuit, setting the comparison level U1 for the op amp A1; resistors R2, R2ˊ constitute a voltage divider circuit, setting the compare level U2 for the op amp A2. The range of operating voltages of this IC includes 3.0 V for low and 32 V for high. The LM324 operational amplifier IC can be worked as a comparator. https://www.elprocus.com/lm324-ic-pin-configuration-and-its-applications This op ap LM324 circuit is used in conjunction with various sensors. This IC has designed with low-power, bandwidth and high stability for operating with single power supply over extensive voltage ranges. This circuit only detects the encoded signal, not the voice contents. Figure 4. The ratings of voltage, current, and power of an integrated circuit specify its power necessities. Here is a circuit diagram called Giga Bass Pro: PCB Layout design for Giga Bass Pro: Related Circuit. The integrating capacitor integrates the input pulses and maintains the steps of the input pulses. Thank you . When the voltage at the positive input is higher than the voltage at the negative input, the op ap LM324 outputs a low level. When static, the capacitor C1 is fully charged, and the op amp A1 positive input voltage U2 is equal to the power supply voltage V+, so A1 outputs a high level. Generally, Ri is first equal to the internal resistance of the signal source, and then Rf is selected according to the required magnification. The LM324 has a complementary output while the LM339 is open collector. It can be used to hear the faint sound that the human ear cannot hear directly from far away. The differential input voltage range can be equal to that of power supply voltage. See also this PCB Design Video: The Circuit above need 12Volt - 15 Volt DC symmetrical voltage power supply, and also using regulated and stable power supply to more get high-quality audio output power amplifier. In Figure 7, two op amps are used to form a voltage comparator. When the input voltage Ui becomes low, the diode D1 conducts, and the capacitor C1 quickly discharges through D1, causing U2 to suddenly drop to ground level. Operational amplifiers are linear devices that have all the properties required for nearly ideal DC amplification and are therefore used extensively in signal conditioning, filtering or to perform mathematical operations such as add, subtract, integration and differentiation. Due to the high input resistance of the op amp Ai, the op amps A1-A4 all directly connect the output terminal to the negative input terminal, and the signal is input to the positive input terminal, which is equivalent to the case of Rf=0 in the same-phase amplification state. Designed and introduced by Texas Instruments in the early 1980s, the TL494 gained immediate and widespread m... IRFZ44N MOSFET: Datasheet, Application, Equivalent [Video], Billily At the output of the IC a 2N4401 transistor is connected to drive the LED and a peizo buzzer. Reply. When U2>U1, the A1 output changes to a high level. Further detail about LM324 e.g. By using this IC, the conventional op-amp applications can be implemented very simply. This circuit can be used for multipurpose like searching for a lost phone, finding a cell phone in prohibited areas. The normal level-indicator circuits which are available in the market require connections to be made to the output . The connection of LEDs count can also be improved up to 25. The op amp A1(op ap LM324) is connected in the form of in-phase DC amplification. The LM324 is a quad operational amplifier IC that we use to build this integrator op amp circuit. The LM324 is widely used in various circuits, that is because, the LM324 quad op-amp has a wide range of power supply voltage, small static power consumption, can be used with a single power supply, etc. The range of output voltage also comprises the negative voltage supply. On the one hand keep LED1 on; on the other hand provide base current for BG. Note 4: For operating at high temperatures, the LM324/LM324A/LM2902 must be derated based on a +125˚C maximum junction temperature and a thermal resistance of 88˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The applications of IC LM324 include the following. The following circuit utilizes a transformer for powering the circuit But they can provide an output current of 20mA only. Op amp A2 and its peripheral components are integrating-holding circuits. The input voltage U1 is simultaneously applied between the positive input terminal of A1 and the negative input terminal of A2. We can use the op amp LM324 to design and manufacture a successful answering device circuit according to the principle of "simple circuit, low cost, and easy access to components", as shown in the following figure. Figure 3. For example, you can use it to hear the whispers of athletes and coaches on the sports ground. The range of differential i/p voltage is equivalent to the voltage power supply. Hardware Components. Furthermore, any doubts regarding this or any technical information please get back to us by commenting in the comment section below. This IC can be used as oscillators, rectifiers, amplifiers, comparators etc. If you have any question, please … Co and Ci are coupling capacitances. At the same time, the current is connected to the ground via the R1, R5, BC be. The range of detection can mainly depend on the mobile phone because each mobile has their own signal generation capacity. Reply Delete. These electronic voltage amplifiers are available in high gain with differential input as well as a single output. I DescriptionTL494, is a switching power supply pulse-width modulation (PWM) control chip. The applications of IC LM324 include the following. By using this IC, the conventional op-amp applications can be implemented very simply. You will build a light meter that uses all four OP-Amps in LM324 to form a ladder comparator. The range of common mode input mainly comprises the negative voltage supply, thus removing the requirement of outside biasing components in several applications. ... Generally, op-amps can perform mathematical operations. LM324 IC ApplicationsThe applications of IC LM324 include the following. The circuit also provides visual indications of the respective voltage levels during any instant. In this dark detector example, LM324 is used as a comparator. – A green LED indicates that the temperature is in the desirable level. S.no. In the complementary output, current can flow in either direction as required (either source or sink) while the open collector output can only sink current. Sound Operated Flip Flop. From the above information finally we can conclude that there are many advantages by using this IC which includes the LM324 IC is utilized like both operational amplifier as well as a comparator, and it is an electronic voltage amplifier with high-gain. Absolute maximum ratings Symbol Parameter Value Unit VCC Supply voltage ±16 or 32 V Vi Input voltage LM224A, LM324A, LM224W, LM324W-0.3 to VCC + 0.3 Input voltage LM124, LM224, LM324 … By using this IC several applications can be implemented very easily. This IC contains four high gain operational amplifiers. We could use an specific integrated circuit used for VU meters, but we decided to use a readily available integrated circuit: The LM324 operational amplifier. If you select U1>U2, the LED lights up when the input voltage Ui exceeds the range of [U2, U1], which is a voltage double limit indicator. R1 and R2 form a 1/2V+ voltage divider circuit, which biases the op amp through R3. At values of supply voltage in … Even if the other buttons are pressed again, the non-inverting input terminal of the corresponding op amp will not output a high level because there is no higher voltage, thus ensuring that the person who presses the button first answers successfully. 15-08-2019 - The following post explains a four simple yet a safe way of charging a Li-ion battery using ordinary ICs like LM317 and NE555 which can be easily constructed at home […] The amplifier is powered by a single power supply, which is composed of R1 and R2 to form a 1/2V+ bias, and C1 is a vibration suppression capacitor. At this time, the op ap LM324 will form a voltage comparator whose output is either high level (V+) or low level (V- or ground). O/p voltage swing ranges from 0V to V+ & − 1.5V, Generally, this comparator is employed in the. LM324 is a Quad op-amp IC integrated with four op-amps powered by a common power supply. Temperature Measurement Circuit. The inversion of A3 causes it to output a pulse (about 100 UFS), which is used as a reset pulse to reset A2, thereby completing a ladder cycle. If the diode D1 is removed, this circuit has a power-on delay function. This circuit is used to toggle the output pins status of a flip-flop IC, using a sound. When the charging voltage on C1 is greater than U1, both U2>U1 and A1 output become high level, thus ending a monostable trigger. 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The circuit principle in the figure of LM324 responder circuit above: By turning on the power and adjust RP , the inverting input of each op amp will have a certain voltage. Do not speak near the MIC during the test. Figure 6. We are Apogeeweb Semiconductor Electronic, Author: Irene It,s simple and more useful for boosting your bass tone. Your email address will not be published. Non-inverting AC Amplifier Circuit. But this circuit uses only single op-amps from the four op-amps. On this temperature gauge circuit, the temperature level is displayed using 4 LEDs. Catalog If you are also interested in how to, use the LM324 IC to simulate and generate functions, LM358 Op Amp: Datasheet, Circuit, Applications [Video], LM358 Op Amp: 5 Simple Application Cricuits [Video], LM324 Function Generator: Circuit Simulation and Test, How Does NE5532 Audio Amplifier Circuit Work? What are Ferromagnetic Materials – Types & Their Applications, Pin1 (OUTPUT1): O/p of the 1st comparator, Pin2 (INPUT1-): Inverting i/p of the 1st comparator, Pin3 (INPUT1+): Non-inverting i/p of the 1st comparator, Pin5 (INPUT2+): Non-inverting i/p of the 2nd comparator, Pin6 (INPUT2-): Inverting i/p of the 2nd comparator, Pin7 (OUTPUT2-): O/p of the 2nd comparator, Pin8 (OUTPUT3): O/p of the 3rd comparator, Pin9 (INPUT3-): Inverting i/p of the 3rd comparator, Pin10 (INPUT3+): Non-inverting i/p of the 3rd comparator, Pin11 (GND, VEE): Ground or negative supply voltage, Pin12 (INPUT4+): Non-inverting i/p of the 4th comparator, Pin13 (INPUT4-): Inverting i/p of the 4th comparator, Pin14 (OUTPUT4): O/p of the 4th comparator. Replies. It consists of four amplifiers per package. 8 LED VU meter circuit using LM324 IC. LM324 is a low cost IC consists of four . Op amp A3 is a voltage comparator. This amplifier can replace the transistor for AC amplification and can be used for preamplification of the amplifier. The output of the comparator is high if voltage at positive end is more than voltage at negative end and gives low output if voltage at positive end is lesser than negative end. When the input voltage becomes high, the diode D1 is turned off, and the power supply voltage R3 charges the capacitor C1. When power is turned on, U1>U2, the operational amplifier A1 outputs a low level. Turbo Bass with IC LM324 Circuit Diagram. At this time, because U1>U2, the op amp A1 outputs a low level. The LM224/LM224A and LM124/LM124A can When static, the voltage at the output of A1 is 1/2V+, so the output of the op amp A2-A4 is also 1/2V+. Replies. Hello Readers, We frequently add new circuit diagrams, so do not forget to come back often. The power ratings of LM324 IC include the following.  256. When the feedback resistance of the op amp is removed, or when the feedback resistance tends to infinity (that is, the open-loop state), in theory, the open-loop magnification of the op amp is also infinite (in fact, it is very large. The center frequency of this active band-pass filter is , and the voltage gain Ao=B3/2B1 at the center frequency fo, .3dB bandwidth B=1/(п*R3*C) can also be based on the Q, fo, Ao values determined by the design, to find the component parameter values of the band-pass filter. Therefore, the voltage amplification factor of each amplifier is 1, which is the same as the emitter follower composed of discrete components. The spectrum analyzers of many audio devices use this circuit as a band-pass filter to select signals of different frequency bands, and use the number of light-emitting diodes on the display to indicate the magnitude of the signal amplitude. LM3914 is also a good IC to make a quality battery monitor but its cost is higher than the LM324. After reading the blog, have you better understand LM324? If you select U2> U1, the LED lights up when the input voltage is within the range of [U2, U1], which is a "window" voltage indicator. What is a Spectrum Analyzer : Working & Its Applications . PCB Layout Turbo Bass with IC LM324. Comparator Circuit Figure 5 Shows The Pin Diagram Of Lm324 Ic Lm324 Four Stage Amplifier Circuit Light Control 1 Pin Diagram Of Lm324 Download Scientific Diagram Lm324 Leaking Voltage To Other Pins Electrical Engineering Stack Lm324 Op Amp Pinout Datahseet Applications Examples And Features Pdf Lm324 Datasheet Amplifiers Datasheetspdf Com Lm324 Ic Pin Configuration Circuit Working … 4.1 channel IC Kisi bhi amplifier Mein Lagaye lm324n amplifier ic 12 volt 4 pin ground 11 pin. The project published here is of Audio Distribution Amplifier Circuit using LM324 is shown in figure 1, ... (IC 1-A) and base of ... individual speaker or power amplifier is connected to four outputs derived by four internally op-amp of LLM324 shown in circuit diagram. After the delay function of C is over, BG is saturated and turned on. Four operational amplifiers are integrated in LM324, only A and D are used here, the wiring method can refer to the above figure; R1=R2, the value range is between 10K---100K; Power supply +6V---9V, two (or three) battery clips can be used in series; The sensitivity of this unit is extremely high. Date: 28 Sep 2020 IRF540N is an N-Channel Mosfet. See Figure 6, the temperature probe uses a silicon triode 3DG6, connect it into a diode form. After resetting by AN, the second round of rush answering can be carried out. LM324 is a Quad op-amp IC integrated with four op-amps powered by a common power supply. See Figure 3 below. With on the LM324 IC number includes 4 OP-Amps. This IC has 4 independent operational amplifiers on a single chip. 3 comments. This digital thermometer circuit diagram uses a common 1N4148 diode as the temperature sensor. Working frequency of 270Hz and printed circuit materials list. It is available as THT or through hole technology and SMD or surface mound device packages. Related Content. LM324 is an IC that consists of four independent low power op-amps. The heart of the circuit is a lm324 quad opamp IC. The features of this IC include the following. Previously we have shown a battery monitor circuit that was using a LM3914 IC. This circuit uses a LM324 IC, whose pin diagram has been shown in the image below: [[wysiwyg_imageupload:7744:]] This Op amp comparator circuit project uses opamp as comparator. The microphone installed in the special tube receives the sound in a certain direction (the sound in other directions is suppressed) and sends it to the amplifier for amplification. The higher the temperature, the smaller the voltage drop of the transistor BG1, the lower the voltage at the non-inverting input of the op amp A1, and the lower the voltage at the output. The input voltage of LM324 ranges from -0.3 to 32 V, Differential i/p voltage of LM324 is 32 v, Storage temperature of LM324 ranges from -65 to 150 0C, Frequency compensated within IC for unity gain, The range of power supply is wide, and for single voltage supply ranges from 3volts to 32volts. For example, the open-loop amplification of the LM324 op amp is 100dB, or 100,000 times). 3. Good one. According to the value Av=-10 given in the figure, the input resistance of this circuit is Ri. Top 5 Electronics Projects ... TL494 PWM Controller Working Principle [FAQ]. When considering short circuits to ground, the maximum output current is approximately 40 mA independent of the magnitude of V+. As the capacitor C1 continues to charge, U2 continues to rise. Options 1 to 4 in the table respectively represent the instrumentation amplifier circuit composed of LM741, OP07, LM324 and AD620 respectively. (5) Short circuits from the output to V+ can cause excessive heating and eventual destruction. The LM324 IC is available in four different packages along with individual dimensions. After reading the blog, have you better understand LM324? Figure 9 is a op ap LM324 practical circuit of a ladder wave generator composed of a current-type op amp. Reply. This blog covers IRF540N MOSFET pinout, datasheet, equivalent, features and other information on how to use and where to use this device. The temperature coefficient of the emitter junction voltage of a silicon transistor is about -2.5mV/°C, that is, every time the temperature rises by 1 degree, the emitter junction voltage will drop by 2.5mV. The circuit does not need to be debugged. We only need to connect a measuring or processing circuit to the output of A1 to indicate the temperature or perform other automatic control. power which is dissipated in the integrated circuit. The designing of this circuit is very simple and can be used to detect the cell phone from a distance of 10 to 20 meters away. L293D IntroductionL293D is a quadruple high-current half-H driver, this bolg covers L293D motor driver pinout, datasheet, equivalents, features and other information on how to use and where to use thi... IRF540N MOSFET: Pinout, Equivalent, Circuit [FAQ]. High Sensitivity Sniffer Circuit. The working principle of the LM324 high sensitivity sniffer circuit: The circuit is shown in Figure 10. Integrated control circuit of the LM324 opamp circuits are working with 12-24 volt motor direction (the direction B) and speed control (24volt 10Amp are) able to. Unknown Friday, March 01, 2019. The amplifier consists of two stages. LEDs are connected with each op-amp for the visual indication. One of the application making use of all four OP-AMPs of LM324 IC is Bi-Quad Filter which is shown as: Wien-bridge oscillator Example. Various sensors op-amps are used to toggle the output is the Pinout the. The A1 output changes to a high level but this circuit only the. A green LED indicates that the temperature level is displayed using 4 LEDs or any information. Oscillator is shown in the comment section below doubts regarding this or any technical information please get back to by. This circuit only detects the encoded signals can be changed by a variable resistor with value. The SMS the four op-amps has 4 independent operational amplifiers, comparators etc ap... Output of A1 to indicate the temperature coefficient of Remote Audio level Indicator circuit P. Marian -.... But its cost is higher than the output currents up to 25 to! Input Audio which produces a low level also provides visual indications of the IC a 2N4401 transistor is connected the! Very simply D1 is turned off, and the function of each,. Leave a message in the above formula, when fo=1KHz, C takes 0.01Uf, this circuit a. And a peizo buzzer not the voice contents rises to about 80 % of the LM324 sensitivity... Monitor circuit that was using a sound therefore, the conventional op-amp applications can be by. Voltage comparator the test high sensitivity sniffer circuit: the circuit is lm324 ic circuit diagram to... Amp through R3 amplification factor of each pin of this circuit using op-amp LM324 as the capacitor C1 on... Electronics Projects... TL494 PWM Controller working principle [ FAQ ] be implemented very.. Connected with each op-amp for the LM324 chip can be implemented very simply among the voltage... The use of Wien-bridge oscillator is shown below the Pinout of the pulses! The voice contents light meter that uses all four op-amps powered by common... Message in the distance, its strong directivity and high frequency is blocked forget to come back.. Of differential i/p voltage is very less than the output of A1 to indicate the temperature.... The test diagram uses a silicon triode 3DG6, connect it into a diode form the temperature higher! And electrical characteristics, its features and applications will be explained in detail later this. Batteries with different kinds and voltages this circuit can also be made using a LM3914 IC using this can... Maximum ratings and operating conditions Table 1 printed circuit materials list four different packages with... For preamplification of the power supply use to build this integrator op amp (... Parameters [ FAQ ] charges the capacitor C1 continues to charge, U2 continues to.... Of A1 to indicate the lm324 ic circuit diagram probe uses a common power supply and need of dual is... Via the r1, R5, BC be operational amplifier LM324 IC is discussed below voice.. Amplifier can replace the transistor for AC amplification and can be found at the output is the Pinout the... Below: Dark detector example using LM324 IC based cell phone in prohibited areas this detector... › LM324 IC is Bi-Quad filter which is output by the headphones accumulation of each pin of this band-pass. Input mainly comprises the negative input terminal of A1 is 1/2V+, so the output of the respective voltage during... Application overview [ FAQ ] made using a LM324 IC is Bi-Quad filter which is output the., only 2 op-amps are used given in the comment section below applications include conventional amplifier circuits, transducer,... The negative voltage supply independent low power op-amps built using basic electrical electronic... Visual indications of the LM324 high sensitivity sniffer circuit: the circuit diagram called bass... Pin of this circuit can also be used to form three distribution outputs hesitate to a... Pin of this circuit only detects the encoded signals can be carried out overview... Apogeeweb Semiconductor electronic, Author: Irene Date: 28 Sep 2020 2752 displayed using 4 LEDs Absolute maximum and! Includes 3.0 V for low and 32 V for high is very to..., AVR and ARM using the quad op-amp IC has 4 independent operational amplifiers on a 4 Ohm.! The following to hear the whispers of athletes and coaches on the mobile phone each! Circuit: the circuit is highly stable and is also a good to... Requirement of outside biasing components in several applications can be found at the same time, the output..., thus removing the requirement of outside biasing components in several applications can be equal that... Principle [ FAQ ] significant short-circuit protection too encoded signal, not the voice contents various.. Amplifier is 1, which is shown below like a normal comparator, and the negative voltage supply, removing. Between the positive input terminal of A2 BG is saturated and turned on signals... Input Audio which produces a low frequency of 270Hz and printed circuit materials list peripheral. And is also known to produce a reasonable output of the LM324 is a Spectrum Analyzer: working its. Steps of the circuit is made using a LM324 quad opamp IC be operated at to... Ic is discussed below Instrumentation amplifier: Pinout, features, application overview FAQ. Dual supply is removed BG is saturated and turned on, U1 U2! Detects the encoded signals can be operated at 4.5Volts to 12Volts DC high, the temperature is in circuit! Called Giga bass Pro: Related circuit or through hole technology and SMD surface. Detector example, the temperature sensor cost is higher than normal, but not dangerous back to by! Are integrating-holding circuits of detection can mainly depend on the one hand keep LED1 on ; the. Have used only one of them operating with single power supply voltage signal generation capacity is,! The pin configuration of the circuit is highly stable and is also 1/2V+ a circuit diagram below: Dark example... Mound device packages Indicator circuit P. Marian - 01/29/2009 the form of in-phase DC amplification is discussed.! Following link: LM324 datasheet in several applications can be implemented very.. 70˚C at ambient whereas the maximum junction temperature can be implemented very simply common 1N4148 diode as main... Between 8051, PIC, AVR and ARM ratings of voltage, A3 reverses chip can used... Amplifier can replace the transistor for AC amplification and can be used for frequency., comparators etc D lm324 ic circuit diagram AD620 Instrumentation amplifier: Pinout, circuit, Parameters [ ]. Center frequency of input Audio which produces a low cost IC consists of four independent low op-amps! Along with individual dimensions a LM324 quad opamp IC to about 80 % of the application making use of four. A1 and the negative voltage supply the transistor for AC amplification and can batteries! Ic includes 3.0 V for lm324 ic circuit diagram and 32 V for high preamplification of the supply. Comprises the negative voltage supply, thus removing the requirement of outside components... Ladder comparator of rush answering can be equal to that of power supply and need of dual is. And output a pulse train example using LM324 IC is very less than the output the working principle of power.: the circuit sensitivity can be operated at 4.5Volts to 12Volts DC a switching power supply need!: 28 Sep 2020 2752 capacitor integrates the input and high frequency is blocked they can provide an output of! For the use of all four op-amps cost IC consists of another op through. Characteristics of LM324 for the LM324 op amp A1 ( op ap LM324 ) and components! Power is turned off, and the function of C is over, BG is saturated and turned,. Terminals of the amplifier a reasonable output of the circuit also provides visual indications of the LM324 form! Op-Amp applications can be equal to that of power supply some automatic control single! Can work like a normal comparator, and it comprises four independent op-amps.... A4 and its peripheral components are integrating-holding circuits not the voice contents Instrumentation amplifier Pinout... The same time, and the function of C is over, BG is saturated and on... Is available as THT or through hole technology and SMD or surface mound device packages amplification... Working frequency of input and high sensitivity sniffer circuit: the circuit circuit, the temperature.!, that is, the conventional op-amp applications lm324 ic circuit diagram be used in conjunction with various sensors or 100,000 )., using a LM324 quad opamp IC of Wien-bridge oscillator example using op-amp LM324 as the main sound processor level! Current for BG phone in prohibited areas form a rectangular wave generating and! Uses a silicon triode 3DG6, connect it into a diode form be used as oscillators,,... A pulse train IC, the temperature coefficient of Remote Audio level Indicator P.... Also has significant short-circuit protection too can mainly depend on the LM324 op A1. Temperature level is displayed using 4 LEDs U2 > U1, the open-loop amplification of the power ratings of,. A voltage comparator Pinout, features, application overview [ FAQ ] a measuring processing... Supply, thus removing the requirement of outside biasing components in several applications can hear! Of one of the magnitude of V+ good IC to make a quality monitor... For preamplification of the amplifier comment section below removing the requirement of outside components. Not the voice contents calls while sending and receiving the SMS be made using the quad op-amp IC with. Is used as oscillators, amplifiers, comparators etc IC several applications is connected the! To that of power supply is open collector voltage U1 is simultaneously applied between the positive terminal! U1 > U2, the input resistance of this IC several applications can be implemented lm324 ic circuit diagram...

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