VU replacement with leds in 525

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peter purpose

Well-known member
Joined
Jun 3, 2004
Messages
2,082
Location
London
Gentlemen,
I'd like to replace a 200 uA FSD vu meter with leds in a 525 circuit.
As the rectification is taken care of on board, could I get away with this simple circuit?

000059.gif


The full circuit...

525Cschem21sm.jpg


Many thanks
peter
 
I don't see why not Peter. With pin 8 of the lm3915 grounded, the reference is 1.2V full scale. As long as the 525 circuit can be adjusted for this voltage at full scale, you should be good to go.

Peace - Out, Irv
 
[quote author="KingKai"]I don't see why not Peter. With pin 8 of the lm3915 grounded, the reference is 1.2V full scale. As long as the 525 circuit can be adjusted for this voltage at full scale, you should be good to go.

Peace - Out, Irv[/quote]

Cheers Irv,
I really should engage brain before opening mouth and learn to read a datasheet.

peter
 
[quote author="mediatechnology"]Peter you could use Roger's board:

http://www.picocompressor.com/picocomp/grmeter.htm

There are schamtic links on the page and it can be stuffed with an LM3915. Can be a VU with external rectification or GR. Pretty general purpose.[/quote]

Thanks MT, but I'm really pushed for space and need a super simple solution.

peter
 

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