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Power supply circuit diagrams

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12 Volt 30 Amp PSU
12 Volt 30 Amp PSU
June 22, 2010

Using a single 7812 IC voltage regulator and multiple outboard pass transistors, this power supply can deliver output load currents of up to 30 amps. [more]

Power Supply 0-30V / 0-2A
Power Supply 0-30V / 0-2A
April 24, 2010

The basic requirements than one laboratorial power supply, it is to provide voltages and currents of operation that need the usual units, to have low output resistance, low noise, small ripple and good stabilisation. [more]

Electronic Fuse for Power Supply
Electronic Fuse for Power Supply
April 24, 2010

The power supply, with electronic stabilisation - mainly those of laboratories - it should they are protected from ‘’over current’’ that emanates from short-circuits, erroneous association or damage of repaired appliance. [more]

Power supply +20V/15A and +12V/3A
Power supply +20V/15A and +12V/3A
April 24, 2010

The circuit is based on application of National Semiconductor. First is constituted by three voltage regulators LM338 [IC1-2-3] connected `'in parallel' '. The each one regulator has the possibility of giving 5 A in his... [more]

A Transformerless Power Supply
A Transformerless Power Supply
April 11, 2010

This circuit will supply up to about 20ma at 12 volts. It uses capacitive reactance instead of resistance - so it doesn't generate very much heat. The circuit was designed to provide a cheap, compact... [more]



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