This circuit is used to sense temperatures in degrees Celsius and Fahrenheit. The circuit is from Special Projects from 1983 in Radio Electronics magazine.
Two operational amplifiers are used in this source obtained in an American documentation...
This class B push-pull amplifier circuit with a few hundred milliwatts of power was found in an...
This circuit is from the Motorola Linear Databook of 1990. The coils must be according to the...