Suggested by Philips in a 1970 publication, this circuit uses components from that time. No information is given about the trip transformer.
This system of sequential lights for shop windows, discotheques, stores, does not use integrated...
This circuit was found in an Elektor from the 90s. Next to the circuit we have a table with the...
This sensor was published in Radio Electronics magazine in April 1962. The two-transistor circuit...