We found this tube receiver in a 1950s Japanese publication. The circuit uses 5 tubes and has an RF amplifier stage for greater sensitivity. The power supply is not shown on the circuit.
Mouser Electronics is now shipping DA14585, a kit for the development of voice remote control...
This circuit found in Radio Electronics can be used in games to produce a random pulse train. The...
This circuit uses two light-activated SCRs or LASCRs, uncommon components today. The power depends on...