Jfet bipolar cascode video amplifier


Posted on Sep 29, 2012

The JFET-bipolar cascode circuit will provide full video output for the CRT cathode drive. Gain is about 90. The cascode configura-tioneliminates Miller capacitance problems with the 2N4091 JFET, thus allowing direct drive from the video detector


Jfet bipolar cascode video amplifier
Click here to download the full size of the above Circuit.

An m-derived filter using stray capacitance and a variable inductor prevents 4 MHz sound frequency from being amplified by the video amplifier.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

RS-232 surge protection
Cable-tester
5V From 4Aa Cells Circuit
DTMF Proximity Detector
Common low-pass filter circuit b
Audio high-pass filter



Top