The output voltage of this regulator circuit can be cut (dropping to 1.2 V) from a high level applied to the transistor input. The normal voltage in the operating condition is set at the trimpot to be between 6 and 25 V, typically. The maximum current for the LM350 is 3 A. The regulator integrated circuit must be mounted on a heat radiator. The input voltage must be at least 2 V higher than the desired output voltage.
