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7812 Voltage Regulator Circuit. Смотреть видео: L7812CV Voltage Regulator Tutorial, Increasing Voltage Output Of 7812 Regulator, 1 To 12v Adjustable Voltage Regulator Circuit Lm317 Voltageregulator Diyelectronics, DIY 12 Volt Linear Voltage Regulator LM7812 Wiring And Use.