This circuit is from a Radio Electronics from March 1970. The crystal depends on the frequency at which the signal is to be captured and the resonant circuit determines the tuned band.
This circuit operates with input voltages from 50 to 140 V providing an output of 12 V under...
This circuit provides a 5 V negative output with a maximum current of 1 A. The circuit is from the...
We found this range of LEDs with the UAA180 in the 1976 Siemens Integrated Circuits manual. The...