Dual 5 V power supply (CB24805E)

We found this circuit in the June 1984 issue of Radio Electronics magazine. The circuit uses an integrated circuit that is not very common today.

| Clique na imagem para ampliar |

Electrolytic recoverer (CB7074E)
This circuit aims to recover electrolytic capacitors by applying currents higher than normal for a...
Delayed relay 4001 (CB24349E)
This circuit activates a relay after a time given by C1 and R1. The circuit is from a Radio...
'Push button memory (CB7243E)
This circuit was found in an American documentation from 1969. The circuit memorizes when a...