We found this circuit in the October 1987 Radio Electronics magazine. The circuit uses a 1-to-1 turns ratio pulse transformer to trigger the Triac.
1E) This circuit was found in a Popular Electronics from the 90s. The circuit generates different...
This configuration makes use of an LM3900 transconductance operational amplifier. The transistor can...
This interesting configuration of voltmeter with FET, with very high input impedance was found in an...