Suggested by Philips in a 1970 publication, this circuit uses components from that time. No information is given about the trip transformer.
In the circuit in the figure, we have the production of rectangular signals with frequencies of up...
Found in an EEE this circuit uses FETs of the time and a bipolar one. Current equivalent...
We found this circuit in a 1968 Hughes publication. The components are from the era and can be...