Found in the March 1985 issue of Radio Electronics magazine, this circuit uses a digital module from the time that makes it easy to configure. The circuit uses a bridge thermistor as a sensor.
The diodes of this circuit are general-purpose, and the base resistors are typically between 2k2...
This electronic Morse key was found in a Popular Electronics from the 90's. The components are common,...
This well-known oscillator configuration that produces a siren sound when pressing CH1 is from a...