From: William Levak (wlevak_at_cyberspace.org)
Date: 2002-10-01 04:06:02
On Mon, 30 Sep 2002 ruud.baltissen@abp.nl wrote:
> Version 2. Version 1 first generates 18V and then you have to reduce it to
> 5V. This simply means that the 7805 has to dissipate about twice as much
> heat. And how much noice is on the output of the LM2586?
You need to be careful here. The 7805 has over-voltage, over-current, and
overheating protection. If it has too much voltage on it, or too much
current is going through it, or it gets too hot, it will shut off. It
looks as though it has been blown, but it hasn't. You have to wait till
it gets cold before it resets. That could take a couple hours, or it
colud take a day.
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