Decade neon counter (CB6618E)

Found in a 1969 documentation, this neon lamp circuit may have the number of steps increased. The power supply is made with high voltage.

| Clique na imagem para ampliar |

Instrumentation Amplifier (CB14090E)
This amplifier with differential input uses two old op amps but can be implemented with modern op amps....
Analog Signal Switching Circuit (CB19480E)
This signal switching circuit uses currently unusual field effect transistors and an operational one that...
FET Amplifier Stage (CB969E)
This JFET amplifier was found in documentation from 1958. The circuit has voltage gain of 4 and 10...