May 5 2009 12 31 pm pdt.
Diy 12 volt 5 amp power supply.
However if you are just going to pull out a few hundred milliamps lower than 500ma from it you won.
Sgs thomson s ic lm338 in conjunction with a very few passive components is able to produce voltages right from 1 2 to 32 volts.
If you want a 5 volt power supply just simply replace the lm7812 to a lm7805 regulator.
Plug in bread board power supply.
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If you are planning to build a 0 to 12 volt dc power supply unit for your work bench this article may specifically help you.
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Datasheet for lm78xx if you are going to pull out about 1 amp from this power supply you will need a heatsink for the regulator otherwise it will generate very high temperatures and possibly burn out.
The circuit in figure 1 will give us 10 amps 12 amps surge with performance that equals or exceeds any commercial unit.
How to make a 12 volt 5 amp battery charger diy technology tutorial guidecentral duration.
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Diy how to build 12 volt power supply build duration.
The variations are done smoothly through a discrete potentiometers to obtain wide voltage ranges.
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Build a 10 amp 13 8 volt power supply.
The circuit even has a current limiting feature which is a more reliable system than most commercial units have.
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