Phase detector (CB8155E)

This circuit was found in a 1967 Electronic Design. The FET is from that time. Capacitor C is determined by the frequency of the signal worked.

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RF Monitor (CB21686E)
This RF monitor or field strength meter can use instruments from 100 uA to 1 mA full scale. The...
10 + 10 W amplifier TDA2005S (CB15238E)
This amplifier for automotive use was found in the SGS manual of linear integrated circuits of...
100W Inverter (CB21487E)
This SCR circuit can operate on frequencies from 1 to 20 kHz. We found it in an American...