Tri-terminal refers to the integrat

Tri-terminal refers to the integrated circuit used for voltage stabilization. There are only three pin outputs, which are input, ground, and output. It looks like a normal transistor, standard package for TO-220. Using three-terminal voltage regulator IC to form a voltage regulator power supply needs very few peripheral components, the circuit inside there are over current, overheat and adjustment tube protection circuit, reliable, convenient, and cheap. In practical application, a large enough radiator should be installed in the three-terminal integrated voltage stabilized circuit (of course, not under the condition of low power). When the temperature of the voltage regulator tube is too high, the voltage regulator performance will deteriorate, or even damage.