PCM switching (CB9403E)

Using a tunnel diode, this circuit was found in a 1966 American publication. The circuit is for signals sampled at a speed of 8,000 sps.

| Clique na imagem para ampliar |

Crowbar (CB8420E)
This circuit fires by burning the fuse when the input voltage exceeds the value referenced by the zener....
UAA180 VU-Meter (CB12348E)
The UAA180 integrated circuit is no longer manufactured, but if the reader finds one in a scrap...
Dual Power Supply 12 + 12 V x 1 A (CB1182E )
We find this circuit in a Radio Electronics of July 1984. It consists of the traditional version of 1 A...