Pentode Mixer (T295E)

This circuit is from 1964 documentation. Its purpose is to mix RF signals to obtain the beat frequency in communications applications.

Buffered Oscillator (CB4807E)
This oscillator with operational and CMOS buffers generates complementary signals. The circuit is...
Tone Filter Using the 4066 PLL (CB191E)
The basic application for a 4086 PLL is as a tone detection The circuit can be selected to...
Analog TV Modulator (CB5357E)
This circuit for analogue TV was found in an American 1980s documentation. The transistor can be any RF...