JFET-Bipolar Cascode

Posted on Feb 7, 2014

The following schematic shows the JFET- Bipolar Cascode Circuit Diagram. The JFET- Bipolar cascode circuit will provide full video output for the CRT cathode drive. Gain is about 90. The cascode is a two-stage amplifier composed of a transconductance amplifier followed by a current buffer. The cascode configuration eliminates Miller capacitance p

JFET-Bipolar Cascode
Click here to download the full size of the above Circuit.

roblems with the 2N4091 JFET, thus allowing direct drive from the video detector. An m derived filter using stray capacitance and a variable inductor prevents 4. 5 MHz sound frequency from being amplified by the video amplifier.

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