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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:06 PM
Hobby Circuits List
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Brownout Voltage Tester
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Most well designed
line powered
products can tolerate a wide variation of AC voltages. But, some circuits are
less tolerant. The hobby circuit below can be used to test a circuit’s ability
to operate under low (brownout) AC line conditions. |
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The electronic circuit shown below
uses a filament transformer to “buck” the normal 120vac line voltage down to about
95 volts. A similar circuit could be used in other countries with a 48vac
transformer. Such a transformer would lower the test voltage from 240vac to
192vac. With the components shown, the schematic has a load rating of 250 watts. |
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Click on Circuit Below to view PDF of Schematic |
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eMail David A.
Johnson, P.E. about this circuit |
