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Author Topic: question about Regulater 5V 7805  (Read 407 times)
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jordan
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When I the connect the output voltage of regulater 5V to pic , the voltage drop to half , why?
« Last Edit: April 14, 2013, 12:08:10 pm by TTU.ABD » Logged

Left Coast, CA (USA)
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When I the connect the output voltage of regulater 5V to pic , the voltage drop to half , why?


Go ask the pic people, arduinos don't do that.  smiley-wink
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texas
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If the regulator gets real hot at the same time, then it is overloaded and folding back the voltage.  Otherwise, if you don't have the appropriate capacitors on the input and output, it could be oscillating.
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Experience, it's what you get when you were expecting something else.

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Are these the actual measured voltages?

Does the LED pass enough current for the regulator to work?
« Last Edit: April 14, 2013, 12:32:16 pm by outofoptions » Logged

the land of sun+snow
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OP's schematic showed up in a belated fashion. Someone tell him how to measure voltages.
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