Results tagged #Opamp in Circuits
Broskie auto-bias circuit
Considering that I had complained of a schematic typo from Siliconix, it is doubly embarrassing that that April 29`s blog held a few schemat...
FLOW METER
Simple opamp circuit with one transistor gives reliable hot-wire anemometer for measuring flow of gases or liquids. R2 is heated above ambie...
OPTICALLY COUPLED V F
Input voltage range of 0-10 V is converted to proportional frequency at output of optoisolator with high linearitv bv RM4151 converter used ...
DIFFERENTIAL AC SIGNALS
Precision full-wave rectification of differential voltage is achieved by transforming to current for rectification and reconversion to outpu...
DIFFERENTIAL AC SIGNALS
Precision full-wave rectification of differential voltage is achieved by transforming to current for rectification and reconversion to outpu...
SIX RANGE LIGHT METER
Switching of feedback resistors for opamp driven by Radio Shack 276-115 selenium solar cell gives multirange linear light meter. With 1000-m...
SIX RANGE LIGHT METER
Switching of feedback resistors for opamp driven by Radio Shack 276-115 selenium solar cell gives multirange linear light meter. With 1000-m...
Filter Circuit
Circuit using optical Electronics 9803 opamps separates AF input signal into two outputs. Low-pass output contains DC to 10 Hz, and high-pas...
Filter Circuit
Circuit using optical Electronics 9803 opamps separates AF input signal into two outputs. Low-pass output contains DC to 10 Hz, and high-pas...
Motorola Micor S-meter Driver
The artwork style of the opamp and of the meter face both suggest that is is an ACC design and is from an old issue of ACC Notes. I have cre...
Motorola Micor S-meter Driver
The artwork style of the opamp and of the meter face both suggest that is is an ACC design and is from an old issue of ACC Notes. I have cre...
fully differential opamp
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Opamp VHF FM Transmitter
ICs that in the past were far too expensive for the hobbyist tend to be more favourably priced these days. An example of this is the AD8099 ...
How to build 2nd Order Opamp Filters
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Opamp VHF FM Transmitter circuit
This opamp is available for only a few pounds. The AD8099 is a very fast opamp (1600 V/ms) and has high-impedance inputs with low input capa...
2nd order opamp filters
Three 2nd order filters are shown, low pass, high pass, and bandpass. Each of these filters will attenuate frequencies outside their passban...
non inverting opamp butterworth filter
I would like to learn if this circuit will invert the input signal or not. The opamp is single supplied, and supply voltage is 5V. The input...
What is the name of this OpAmp Circuit
Hey guys I`ve been researching a ""mystery circuit"" and I can`t figure out what its name is. It`s driving me crazy!!!! Please HELP ME!!! Th...
oscillator circuit with opamp and zener diode
Looks like a schmitt trigger oscillator. By the way the resistors and capacitor are used it is probably a saw-tooth wave generator with R2 &...
100Khz sine oscillator
All you really need is a decent opamp, three resistors, three caps. Make one of the resistors adjustable, otherwise all components same valu...
Loudness control
First you will have to use a opamp like ne5532, than calculate the frequency you want on each block(on block for flat, one for bass and one ...
mixer circuits
The only downside to a single opamp stage is that it inverts the signal so needs another inverting buffer to put it back again (if absolute ...
Triangular Wave Generator
Triangular wave generator using opamp. Circuit diagram theory and working. Integrating square wave produces a triangular wave. Practical cir...
A quality tone control circuit using opamp and few passive components
Tone control circuit using opamp and a baxendall passive tone control circuit. Overall gain is 25db with 20db boost & cut. Powered using 15V...
Inverting amplifier using opamp. Practical opamp amplifier circuit and waveforms
Inverting amplifier using opamp. Equations for voltage gain and output voltage, input and output waveforms, practical inverting amplifier ci...
Instrumentation amplifier using opampCircuit DiagramWorkingConstruction
Simple instrumentation amplifier circuit diagram using opamp. Equation for gain, design.Working and construction also provided.....
converting circuits to c
Convert a feedforeward opamp PID loop to C code I am trying to do such a conversion and honestly, have no idea where to start. I can get all...
Symmetrical opamp supply circuit
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Fun with Filters!
I built a simple 1KHz 6Vpp Sine Wave Generator from a handful of opamps and passives I had laying around. You can check out that project her...
Negative Supply From Single Positive Supply
Opamps are very useful. But one of their major drawbacks is the requirement of a dual supply. This seriously limits their applications in fi...
Opamp Filters schematics
The figures below illustrate using opamps as active 2nd order filters. Three 2nd order filters are shown, low pass, high pass, and bandpass....
Opamp Design and Test Board
This project is basically what I use for a quick prototype, or for just mucking about with an idea. It is easy to make, and only needs a me...
Opamp Design and Test Board
This project is basically what I use for a quick prototype, or for just mucking about with an idea. It is easy to make, and only needs a me...
Opamp Based Power Amplifier
The amplifier is based on the commonly used class-AB complementary power amplifier with compound pair output transistors. The system uses a ...