The purpose of this circuit is to check the linearity of SSB amplifiers. The circuit was found in an old documentation for hams. The diode is a general purpose detector type.
This circuit was obtained in a 1973s documentation. The transistors may be BC558 for the PNP and...
We found this circuit in a 1977 CMOS oscillators documentation. The power can be sourced with...
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...