Triple 5 V Numitron power supply (CB8673E)

This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for Numitron indicator valves used at the time.

| Clique na imagem para ampliar |

Preamplifier and Equalizer (CB18860E)
This circuit is from a 1968 publication. It uses germanium transistors from the time, having...
The Transistor as Switch (CB922E)
This circuit can be used as shield or to drive powerful loads from low current switches such as...
CBS Columbia TR 260 Radio (CB18446E)
This is a 6-transistor transistor receiver manufactured in the 60s. The circuit is a...