cb fm 27mhz receiver circuit diagram

27MHz CB Receiver Circuit

Received by Email - 01/12/2010

This is a simple 27MHz FM-CB receiver circuit built with TCA440 for listening CB ( citizen's band ) [...]
wien bridge oscillator circuit diagram

Wien Bridge Oscillator Circuit

Received by Email - 01/11/2010

THis Wien bridge oscillator is very simple and as every wien oscillator has low distorsion and the resonance [...]

Wireless Headphones Transmitter Circuit

Received by Email - 01/03/2010

This wireless headphones transmitter assures a quality reception over 2 meters. The oscillator frequency is between 1750KHz and [...]
polarity indicator circuit

Polarity Indicator Circuit

Received by Email - 12/12/2009

Is is easy to test the polarity of a circuit's point whether it is positive or negative by [...]
dx filter circuit schematic

DX Audio Filter Circuit

Received by Email - 12/11/2009

Most universal radio receivers have a very wide bandwidth that is not particulary for radio amateurs. The better [...]
noise blanker suppressor circuit schematic

Stereo Noise Limiter Circuit

Received by Email - 11/30/2009

This stereo noise blanker or suppressor attenuate the noise with 45dB when the music signal is low or [...]
earthquake detector schematic

Earthquake Detector Circuit

D Mohankumar - 11/13/2009

Here is an ultra sensitive earthquake detector circuit that can sense seismic vibrations. It can be used to [...]
audio limiter compressor circuit schematic

Audio Limiter Circuit

P. Marian - 11/09/2009

This audio limiter circuit is easy to build, works with BA741 8pins or 4pins so pay attention and [...]

Ultrasonic Sensor Circuit

P. Marian - 11/04/2009

This Ultrasonic Sensor Circuit consists of a set of ultrasonic receiver and transmitter which operate at the same [...]

Stereo Encoder with High Separation

P. Marian - 11/02/2009

A higher channel separation stereo encoder built with 3 iC's 4066, 4047, 4013 and 741. It has a [...]

LM741 IC Datasheet

P. Marian - 10/14/2009

According to the datasheet LM741 IC is a general purpose single operational amplifier. The UA741 is a high [...]
modulable power supply circuit schematic

AM Modulated Power Supply

Received by Email - 10/10/2009

A power supply with a modulated voltage output is required for modulation of AM transmitters final stages, Gunn [...]
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