This TTL circuit generates a 100 MHz signal for digital instruments. The CI is not easy to obtain, being of the high speed MECL type. The circuit is from a 1972 Motorola manual.
Connected between an external antenna and the antenna input of a receiver, this circuit provides...
This circuit is from 1976 RCA documentation. The circuit uses an SCR that is no longer common but...
Found in Popular Electronics this circuit will trigger a buzzer if the ignition key is removed...