The BC557 Transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. This allows the controlled (output) power to be higher than the controlling (input) power.
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The BC557 Transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. This allows the controlled (output) power to be higher than the controlling (input) power.