This simple circuit uses a car ignition coil. The circuit appeared in the 1983 Radio Electronics Annual Edition. The circuit supports equivalent transistors.
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...