Jim, I had actually calculated 540 ohms for 13 volts and went looking for
560 ohms resistors. My local RS didn't have any 560's so I settled for two
1K 1/4 Watts in parallel. Good catch.

--
Best Regards,
Mike.

http://flickr.com/photos/mikenoel/
"RST Engineering" wrote in message
m...
.
If you added 500 ohm resistors to the circuit you've done something no
other human being has done since RETMA took charge of component values
prior to WWII. 470 or 510 maybe?

Jim



The one slight mod I did to Jim's schematic was to add 500 ohm resistors