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Datasheets and Specifications

The BC547 is a common NPN small signal transistor. View the datasheet and information for the BC-547 transistor from various manufacturers.
Datasheet and PDF Data sheet for the TL494 Pulse Width Modulation (PWM) Control Circuit.
Data sheet for the 7805 (LM7805), a compact IC 5v DC voltage regulator integrated circuit. This page further describes the 7805 and provides Datasheets for the IC device.