Strobe (T461E)

Found in Popular Electronics from August 1968, this circuit makes use of a strobe tube from the time.

Timer for enlargers (CB8351E)
Suggested for the control of photographic enlargers, this 1967 General Electric circuit uses still...
Car Alarm (CB4412E)
We found this alarm in a 1992 documentation. The circuit has several timings and the relay can...
Test for LEDs and Microlamps (CB17277E)
This is a circuit for testing small lamps and LEDs. The lamps that can be tested are the ones...