1976 6-Digit Clock (CB24419E)

This commercial 6-digit clock circuit was found in August 1976 Radio Electronics magazine. Note the supply voltages and the use of a period module.

| Clique na imagem para ampliar |

Experimental Sequential (CB16270E)
For those who like experimental circuits, here is a sequential flasher system with LEDs, which can be...
Differential Multiplexer (CB5352E)
This circuit was found in an ancient American documentation. The integrated circuit is of the time...
1.4 kHz Double T Filter Passes Range with the 741 (CB1455E)
This circuit was found in a 1977 Radio Shack documentation. The circuit is tuned to 1.4 kHz, but...