Auto gain control op-amp circuit
Posted on Mar 2, 2013
file1: Click here to download LM741.pdf
file2: Click here to download MC3340P.pdf
file3: Click here to download 2N5485.pdf
file4: Click here to download 1N270.pdf
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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The AquaCont is an electronic system witch permits to manage and to monitor most of the...
In perfect discharge the batteries of lead acid, exists the fear they are destroyed. This circuit...
This circuit has a 100 mV hysteresis which can be used in applications where very fast transition...
This is a simple low-cost 50W off-line switching power supply, which can be used for home...
An amplifier to go with an antique Meissner AM High Fidelity tuner that I had restored. But by...
LM117/LM317 National Semiconductor Corporation is a three-terminal adjustable positive voltage...
This optical trigger is a general purpose module for use with `standard` 3mm package infrared...
When the weather is hot with the sun beating down the car won`t start and radio, keyless entry,...
The feedback resistor determines the bias of the oscillation circuit. Generally, C-MOS IC uses...
Phase-sensitive detectors usually take the difference between an input FM signal and the same...
Here is another little circuit I designed for radiation logging purposes. It is based on an Atmel...
Shown for reducing power consumption ISO103 circuit. For multi-channel synchronous applications...
A typical computer motherboard CPU power supply circuit A typical computer motherboard CPU power...
Crystal is a one-way ordinary transistor triggered threatened tube dimmer light circuit, VT2, V...
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