Relay phase selector (CB9278E)

We found this circuit in a 1965 Electronic Design. The transistors are from the era, and modern equivalents can be tried out.

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Car Alarm (CB3835E)
This alarm circuit is from a 1987 publication, however the components used are still modern. The...
Jumper Premo Flex FFC FPC - Molex
Molex is using the FFC / FPC Premo-Flex jumpers for inter-board and inter-plate interconnects...
Hybrid Amplifier - 10 or 20W (CB999E)
This amplifier uses hybrid modules Sanken and can provide powers of 10 W or 20, depending on the...