Photodiode light sensor (CB8271E)

This circuit of a 1964 Electronic Design uses a photodiode from the time. Modern equivalent can be used. The standby current is 1.2 mA.

| Clique na imagem para ampliar |

Amplified megaphone (CB23703E)
This is an improvement on the previous circuit with a preamplification stage. The circuit is from...
Capacitor Box (CB26041E)
This bench circuit was found in the February 1998 issue of Electronics Now magazine. It can be...
MOSFET trigger (CB21480E)
This circuit was found in a 1967 Electronic Design. FETs are from the time, so modern equivalents can be...