The integrated circuit used is uncommon today. We found this configuration in Motorola's 1990 Linear Databook. The triac can be any of the TIC series.
This circuit was found in a 1967 Philips publication. Transistors support equivalents and modern...
We found this circuit in a technical documentation from Texas Instruments. The circuit can be...
The coil is formed by 70 + 5 turns of 6 to 30 AWG wire on a 1 cm to 10 cm ferrite core. The...