Audio Fader


Posted on Nov 27, 2012

In this circuit, Ql is a simple amplifier that has its gain controlled by a variable emitter resistance supplied by FET Q2. In


Audio Fader
Click here to download the full size of the above Circuit.

the up position of SI, C3 discharges through R5 and the gain of Ql decreases because Q2 is driven toward cut-off. In the down position, Q2 conducts more, depending on the setting of R6, which causes a gain increase. By varying R5 or C3, various fade rates can be obtained.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Microphone Preamplifier BC547B
RS232 reciever schematic
Stereo tv decoder
Bilateral current source
Ring-detector
One Direction Motion Sensor
digital sine wave synthesis
I2C Interfacing Acceleration Sensing PCF8591



Top