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7812 vs 7912
7812 vs 7912
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Old 11th June 2006, 07:00 PM   #1
KU40 is offline KU40  United States
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Default 7812 vs 7912

I am repairing an amplifier and I think a 7912 regulator is bad. What's the difference between the 78 and 79? Radio shack apparently only carries the 7812 so if I have to use a 7912 I suppose I'll have to order it from somewhere else.
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Old 11th June 2006, 07:02 PM   #2
Tekko is offline Tekko
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7812 = positive bus voltage regulator.
7912 = negative bus voltage regulator.
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Old 11th June 2006, 11:44 PM   #3
latala is offline latala  United Kingdom
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7812 vs 7912
please alsop note that the pin connections are also different
regards trev
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Old 12th June 2006, 09:51 PM   #4
AndrewT is offline AndrewT  Scotland
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down load the datasheets for each.
Lots of useful guidance and circuits as well as the techy jargon.
regards Andrew T.
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Old 13th June 2006, 04:30 PM   #5
Leolabs is offline Leolabs  Malaysia
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From:Fairchild,NS,TI,ST.......................any of them.
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