On Thu, 26 Jun 2008 07:38:35 -0700 (PDT), steve <kvsteve@[EMAIL PROTECTED]
>
wrote:
>
>Since the 9v battery supply is quickly used up, I am using a ac
>battery eliminator/wall wart to run the Led timer.
>
>Although the eliminator provides the needed 12v to 15 v, it also
>changes the 50 hz dramatically to several khz.
>
>The khz output from the eliminator completely upsets the 555 timer
>input, so there is no timing available from with the circuit.
>
>I tried a 1000uF with several diodes placed at the eliminator’s
>output, but there is hardly any production of dc.
---
Something's clearly screwy there.
Why don't you post a schematic (not anywhere on USENET, since Google
doesn't sup****t binaries) so we can see what you're doing?
Or, better yet, download a free copy of LTspice from:
http://www.linear.com/designtools/software/
generate the schematic, and post the text *.asc file here.
JF
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