This circuit with the CA3059 was found in the July 1995 Elexctronics Now magazine. The signal must be DC, and the circuit is not isolated from the mains.
This PUT trigger circuit for SCR was found in 1967 General Electric documentation. The...
With a 22 V symmetrical power supply this amplifier provides 15 W of output power with excellent...
With this circuit it is possible to compare the gain of transistors to obtain a matched pair (of...