Pulse Inverter (CB22284E)

Using an era germanium transistor, this 1960s circuit reverses the phase of relatively low frequency signals.

Fast half wave rectifier (CB9692E)
Being able to operate with frequencies up to 100 kHz, this circuit was found in a 90’s...
1 MHz Low Pass Filter (CB4833E)
The integrated circuit used in this filter is not very common today, but the reader can use...
Frequency Doubler (CB21442E)
This circuit doubles the frequency of signals from 10 to 50 MHz. We found it in a 1969 Electronic...