Simple pulse extender (CB8921E)

This TTL pulse stretcher or stretcher was found in a 90's EDN. The time constant R x C1 determines the widening of the incoming pulse.

| Clique na imagem para ampliar |

Five Transistor Superherodyne Receiver (CB960E)
This is a commercial circuit from the year 1958. Transistors are germanium types and transformers...
Instrument driver (CB7357E)
This circuit was found in American documentation from the 1960s. The operational amplifier is from that...
IR Receiver (CB875E)
This circuit can be used in alarms, data links or áudio links using IR radiation. The circuit is...