Schematic DIY KitPower supply DC power supply On the right care is what matters
No power supply in most circuits is pure nothing. The requirement ranges from a few milliamps to several amps dozens. Also one often needs a DC power supply, which can easily be regulated voltage and current.
Here is a small collection of power supplies for all possible applications

Here you will find Schematic Circuit Diagram for DIY and further information on Power supply DC power supply
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Small Symmetrical power supply with voltage regulators 78XX/79XX
Strengthening for a standard-78XX controller allows high currents
Beautiful 0 to 30V power supply with pcb layout

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