Found in a 1960s RCA documentation, this circuit applies to most common triacs. The trigger device is a neon lamp and the sensor is an LDR. R is typically 100k and C is 220 nF.
This logarithmic gain operating configuration was found in the June 1994 Electronics Now magazine. The...
This amplifier with two transistors for analog instruments was found in a Raytheon publication from the...
This circuit has an interesting application. If a device with the selector switch in the 110 V...