Found in an Electronics World of 1968 this circuit can use any SCR and diodes depending on the load. The circuit is full wave and the unijunction can be 2N2646.
The purpose of this circuit is to detect audio that amplitude modulates an RF carrier. The circuit is...
This crystal filter is normally used in receivers and the frequency depends on the crystal used...
We found this circuit in documentation from National Semiconductor. For the medium wave range the...