CMOS Mixer (CB9033E)

This touch-controlled circuit was found in English documentation from the 1970s. The components used are common today.

| Clique na imagem para ampliar |

Precise multiplier amplifier (CB7058E)
Found in an EDN from the 90s, this circuit makes use of integrated circuits of the time, some of...
Photosensitive power circuit (CB25193E)
This circuit can be used in alarms by activating a relay or a current load that depends on the...
Transistor AM Radio (CB1389E)
The coil of this receiver consists of 100 turns of wire 38 to 30 in a ferrite rod and the...