Tag: Power Supply

Three Cells Produce Regulated 3V – 3.3V with Power Down/Power Saving Mode

This linear voltage regulator circuit provides battery voltage regulation from battery source to power micro controller system. The output can be selected by choosing the right resistor value in the feedback path.  Many today’s micro controllers are featured with power down or power saving mode, and this circuit accommodates this feature by providing low power mode control on its input. […]

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Category: Power Supply Tags: ,

Selectable Voltages 6V, 9V, and 12V Linear Voltage Regulator

  We can build a multiple voltage power supply 6, 9, and 12V  (AC-DC Adapter) with the circuit shown in the following schematic diagram.  Not only provide multiple voltage output with single voltage supply, this circuit add the benefit of regulating the voltage for better stability. The TIP31 transistor should be installed with proper heat-sink to prevent overheating. A transformer […]

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Category: Power Supply Tags: , ,