General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs that are not common components today. Note the timing components that may change.
This circuit consists of an emitter follower, presenting unit voltage gain implemented with an...
The previous circuit (CB5050E) triggers when the temperature exceeds the limit set on the...
This circuit was found in a 1978 American publication. It beeps if the car's lights are on and the...