Tone Control (CB6306E)

This circuit was found in an Electronics World of 1969. The components of the time. The operational can be replaced by modern equivalent type.

| Clique na imagem para ampliar |

High Quality Radio (CB23626E)
This 10-transistor radio was found in Radio Electronics magazine from December 1964. The...
100 kHz Crystal Oscillator (CB15658E)
This oscillator uses one of the four ports of a 74C14 integrated circuit and can generate 100 kHz...
Humidity and Rain Alarm (CB17475E)
This simple humidity alarm circuit includes a timed warning oscillator whose time is set to R4....