This transistor gain test was published in Radio Electronics magazine in July 1959. The transformer used is a special type common at the time. The circuit tests general-purpose transistors.
This TTL trigger circuit with the 7400 can be used as a signal conditioner in an input shield for...
This circuit can be adjusted between 0.2 and 2 V to trigger with chosen voltages comparing them with...
With this circuit (shield) we can control a load from 500 mA to 1 A, depending on the transistor, using a...