Universal Preamplifier (CB25699E)

We found this universal preamplifier circuit in a March 1994 Electronics Now. It has several types of equalization depending on the signal input.

| Clique na imagem para ampliar |

Operational Pulse Width Modulator (CB5360E)
We find this circuit in an 80s operational amplifier documentation. The circuit applies to any...
Three Transistor Reflex Receiver (CB957E)
This circuit was found in a documentation of the year 1958. The transistors are germanium types...
High voltage switch (CB6929E)
This circuit, for frequencies up to 100 kHz, was found in American documentation from 1970. The...