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Old 21st December 2006, 02:18 PM   #1
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Default Negative shunt regulator > 200 mA

I'd like to build a bipolar psu using a single voltage reference, likely LT1021. The data sheet says the 7- and 10 V versions can be used as shunt regulators, but it doesn't show how either a positive or negative shunt regulator would be set up with a boost transistor for handling larger amounts of current (up to 1 A or so). I could just build the series regulator, as given in the data sheet, but I would like to know how to do the shunt, as well, so I can eventually compare.
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Old 22nd December 2006, 06:53 PM   #2
paulb is offline paulb  Canada
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A shunt regulator is generally only used for low currents, as it is very inefficient for higher currents. That's why the datasheet does not show it as a typical application.
You need to know the range of output current (min and max) to calculate values for a shunt regulator.
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