Found in a 1960s RCA manual, this circuit uses components from the era. For the indicated circuit R1 is 28ohm and R2 is 1 k.
This circuit is from an 80's Radio Electronics. It triggers a load powered by the power grid from...
This circuit is used to test SCRs like the ones of TIC series. The simulation shows the power line...
This circuit is from a 1965 General Electric manual. It uses components from the time that admit...