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my thought would be that there is some ripple current that is causing the cap to heat up, but you said you tried it on an external DC supply right?
if so, that would take my idea out of consideration for the most part.

you could just say F it and replace the circuit with a 7808, but of course that would mean admitting defeat!
LC

[QUOTE="loosecannon, post: 844625, member: 1368"] my thought would be that there is some ripple current that is causing the cap to heat up, but you said you tried it on an external DC supply right? if so, that would take my idea out of consideration for the most part. you could just say F it and replace the circuit with a 7808, but of course that would mean admitting defeat! LC [/QUOTE]

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