Ring Frobnicator Problem

[John Egerton]

Hey guys..

I built the ring frobnicator exactly as stated on the geofex site however i'm having a problem...

The 2 led's are lit dimly all the time and all i get from the pedal is a clean sound at a lower volume that a bypassed sound...

its a little weird...

any help would be great...

Thanks

John

[brett]

Hi.
1. Try using a partly flat battery, or
2. Use two resistors to form a voltage divider (e.g. 10k+1k) across a 9V battery, then tap the centre for a lower voltage power supply (a bit over 8V)

I suspect that the above are due to Hohn Hollis' neat idea of using 2 LEDs for the bias in the LFO.  Maybe some LEDS don't have enough voltage drop?  But I'm only guessing.

cheers

[John Egerton]

so have a lot of people had the same problems?

Its a very strange...

Thanks for the help..

John

[jrc4558]

Make shure you use EXACTLY same LEDs for all three of them! Otherwise the bias is upset. This is exactly what I can into with anither John's cirquit - EZVibe...