This circuit was found in a 70s documentation. The transistor is from that time. L1 has 4 turns of wire 20 in the form of 3/32 inches and L1 has 10 turns of the same wire,
August 2016 - It can be purchased from Mouser Electronics new chips from Dialog Semiconductor, the...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...
Interval pulses emitted by this circuit are picked up in a medium wave radio nearby. The circuit is...