This long interval timer was found in the September 1976 issue of Radio Electronics magazine. The output can be used to control a relay. The circuit achieves timings of up to 14 hours.
Found in a 90s Electronic Design, this circuit operates with Maxim components of the time. The...
This circuit can be used both as a power source and as a battery charger. The resistor R1 serves as...
This circuit uses a unijunction transistor in a different configuration to generate rectangular pulses at...