This semi-proportional temperature control was found in old American documentation. The components are from the period and the maximum power of 2.4 kW.
This circuit was obtained in a Hobbyst Handbook from 1990. The circuit can be easily assembled...
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...
This circuit was found in a 1967 Electronic Design. The FET is from that time. Capacitor C is...