This circuit was found in an Electronic Design. It makes use of a relaxation oscillator to trigger an SCR and two relays. The circuit operates at frequencies of 12 to 180 cycles per minute.
Found in 1969 RCA documentation, this dimmer uses a dual time constant setting to achieve better...
Found in a 1968 Mullard manual, this circuit can function as an infrared audio link. The...
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...