Photomultiplier tube trigger (CB8868E)

We found this circuit in a 1970’s Philips documentation. The circuit uses components from that time.

Transistor Timer (CB13971E)
This circuit is from an English publication from 1965. The transistors used are rare, however, they...
3-stage amplifier (CB23710E)
This low voltage circuit was found in the November 1960 Radio Electronics magazine announcing new...
Wireless Distortion Pedal (CB18018E)
We found this circuit in a 2003 publication. The indicated coil is for capturing the signals in an...