Making tremolo LED pulse in time with the speed on an EA color sound kit.

Started by scriffraff, February 09, 2015, 10:38:38 AM

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scriffraff

Hello first time post here so please be gentle if this topic has been covered already. I did a search and found nothing. I am about to start building an EA tremolo kit from UK-electronics. Is there a way to make the LED pulse in time with the speed?

Here is a link to the diagram http://www.uk-electronic.de/Download/Beschreibung%20Colorsound%20Tremolo.pdf
Thanks in advance.


Mark Hammer

http://www.home-wrecker.com/eatremolo.html

A confusing 2nd post, but if you are still interested in providing a speed indicator LED, this page shows how.  Note, however, that the flash is opposite phase to the volume.  That is, the pulse is in sync with the LFO, but the LED gets bright during the volume dips and dim during the volume peaks.

Brisance

Quote from: Mark Hammer on February 09, 2015, 12:18:42 PM
http://www.home-wrecker.com/eatremolo.html

A confusing 2nd post, but if you are still interested in providing a speed indicator LED, this page shows how.  Note, however, that the flash is opposite phase to the volume.  That is, the pulse is in sync with the LFO, but the LED gets bright during the volume dips and dim during the volume peaks.
A simple jellybean transistor/fet inverter will take care of that :)

merlinb