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how to make simple active low pass – Circuit Schematic
how to make simple active low pass
In electronics, filter circuits are basically employed for restricting the passage of a certain frequency range while allowing some other band offrequencyinto t...
fADC Amplifier Circuit Simulations – Circuit Schematic
fADC Amplifier Circuit Simulations
A band-width limited amplifies shapes the waveform sampled by the 40 MHz high speed, pipeline Analog to Digital Converter (fast ADC, or fADC). It is well known ...
Differentiator Op Amp Circuit – Circuit Schematic
Differentiator Op Amp Circuit
Differentiator circuit is application circuit from playable mathematics formula (influenced) from capacitor activity. The circuit like at picture under this wit...
Creating Buffer front end circuit to read AD744 – Circuit Schematic
Creating Buffer front end circuit to read AD744
Before the test point there is an AD744 with its output connected to a 10nF capacitor and after there is 1K resistor that goes to GND, from this node of connect...
Amplifying DC Diode Detector Output – Circuit Schematic
Amplifying DC Diode Detector Output
The very small DC voltages at the output of the diode detector are difficult to amplify accurately. DC offsets introduced by any op-amp are the main culprit. Lo...
Home Built Laser Projector – Circuit Schematic
Home Built Laser Projector
This is the built servo amplifier and circuit diagram. This is a simple and ordinary op-amp circuit, there is nothing difficult. However it has power amplifier ...
OpAmp based Voltage Translator Ciruit for ADC of Micro-controller – Circuit Schematic
OpAmp based Voltage Translator Ciruit for ADC of Micro-controller
All the naturally occurring phenomena like sound, temperature and pressure etc, are analog in nature. Therefore to make an micro-controller read analog signal f...
Sensor circuit – Circuit Schematic
Sensor circuit
LM358 consist of two independent, high gain operational amplifier in one package. Important feature of this IC is we do not require independent power supply for...
Sample-and-Hold Circuit Schematic Diagram 3 – Circuit Schematic
Sample-and-Hold Circuit Schematic Diagram 3
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Sample-and-Hold Circuit Schematic Diagram 2 – Circuit Schematic
Sample-and-Hold Circuit Schematic Diagram 2
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Sample-and-Hold Circuit Schematic Diagram 1 – Circuit Schematic
Sample-and-Hold Circuit Schematic Diagram 1
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Op-Amp Based PWM Circuit – Circuit Schematic
Op-Amp Based PWM Circuit
This circuit uses the LM358 operational amplifiers (or any single supply op amp) to generate a pulse-width modulated signal. In most cases, I would just use a m...
a voltage-controlled current sink / voltage-controlled resistor – Circuit Schematic
a voltage-controlled current sink / voltage-controlled resistor
Control a current through several current-mirror device (specifically the IREF pin on the TLC5940 ) using a single potentiometer. I`ve tried using a modified Ho...
op amp Could someone help me understand this simple circuit – Circuit Schematic
op amp Could someone help me understand this simple circuit
The circuit is shown in receive mode, PTT switches to transmit, the speaker serves as a microphone and speaker. All systems I`ve seen use a Rocking Armature Tra...
filter Strange behavior from variable-gain amplifier – Circuit Schematic
filter Strange behavior from variable-gain amplifier
It takes a voltage between 0. 4 and 1. 2 V on pin 5 to control its gain. In the first two versions of the circuit, I used logic ICs and/or counters and an op am...
op amp Detect real overcurrent/short-circuits vs. current peaks – Circuit Schematic
op amp Detect real overcurrent/short-circuits vs. current peaks
A MOSFET that drives a load. The load has a sense resistor in its current path and its voltage is used to trigger a circuit that can disconnect the load if we d...
op amp op-amp vs direct control – Circuit Schematic
op amp op-amp vs direct control
100 Ohms at 4. 5 Volts (3xAA) allows 45 mA, but at the upper end of the sweep, due to the load being in parallel, it will be much higher - basically limited by ...
Compensating the forward voltage drop of a diode signal rectifier – Circuit Schematic
Compensating the forward voltage drop of a diode signal rectifier
It says that D1 compensates for D2`s forward drop by providing 0. 6V of bias. Is the +5V an external 5v source How does it compensate The R1, R3 and D1 basicall...
op amp Twin T circuit noisy – Circuit Schematic
op amp Twin T circuit noisy
It`s built on a breadboard and it sounds exactly how it should sound (damped sine wave, big 808/909-kind of kicks). However it`s noisy. I`ve tried adding a big ...
op amp Trouble transferring schematic (working) to actual circuit (not working) – Circuit Schematic
op amp Trouble transferring schematic (working) to actual circuit (not working)
Red = V+, Black = V-, Green = GND, Yellow = Mic Input, Orange = LED Output. The op-amp I`m using is an LM741. It`s supposed to change the peak brightness of the...