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.
We found this circuit in a 70's RCA manual. The circuit provides 0.5 W power in the 700 MHz to 1...
This circuit with TTL output was found in a 1968 EEE. The transistor can be of general use. The...
This circuit was found in a Popular Electronics from the 90s. The circuit uses a general purpose...