Medium wave transmitter (CB22502E)

This short-range, medium-wave transmitter was found in a 1966 documentation. The transistors are germanium of the time. The coil is commercial grade.

Emergency Lighting (CB17043E)
This circuit from a 1995 documentation triggers a set of lamps when the power goes out. In a more...
Remote Control Receiver (CB502)
With a coil formed by 7 turns of 26 AWG wire this circuit operates in the 27 MHz range. But you...
Simple Multimeter (CB16271E)
The assembly of a good multimeter meets only one obstacle: the precision that is obtained depends on...