TIP31 and TIP32 1W Amplifier (CB25709E)

This small audio amplifier was found in the May 1994 issue of Electronics Now magazine. The power transistors must be mounted on heat sinks.

White Noise Generator With the 741 (CB401)
This circuit uses a transistor as noise source and a 741 IC as amplifier, sourcing a high...
Liquid Level Detector (CB5316E)
This simple circuit detects when a conductive liquid reaches the sensors. The circuit has no...
Transistor Characteristic Checker (CB3903E)
With this circuit it is possible to raise the characteristics of a transistor by checking its gain...