A friend of me want power supply 5V 2A circuit. In model to be simple use the a little equipment build easy. I then choose this circuit gives him. By it uses pillar equipment is IC 78S05. Which be IC voltage regulator 5V / 2A positive TO220. the high-quality and the noise is low.
The circuit [...]
This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall tranformers with variable output voltage are available from any electronics shop and supermarket. Those transformers are easily available, but usually their voltage regulation is very poor, which makes then not very usable for digital circuit experimenter [...]
Each 100n “X2″ capacitor (these are Mains rated capacitors) will deliver 7mA to each power supply (the 12v supply and the 5v supply). The only problem is the two supplies must be kept separate and no component can have a DC path from one supply to the other.
Each supply will deliver 21mA and obviously this [...]
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