News:

SMF for DIYStompboxes.com!

Main Menu

Heladito problems

Started by The Iron Chef, January 30, 2009, 09:44:09 PM

Previous topic - Next topic

The Iron Chef

Hi all.
  I've etched and populated a board based on the tonepad clone of the Small Clone, (Heladito). I  think that my build just doesnt sound like it is supposed too.  No "lushness" or any of the other attributes described in the tonepad build reports.  My build just sounds like a plain vanilla tremolo.  It can change speed and depth. I added the depth pot mod and the 2 speed range cap switch, 2.2/1.uf caps.   hmmm.  I guess that I'm missing something that someone else here can find what I cannot. I am including voltages and images.

Heladito semiconductor voltages.  both pots at minimum.

tia
-Keith

ic1      4558
              _____
3.82v  1 | *      | 8 7.60v
3.82v  2 |         | 7 3.80v
3.74v  3 |         | 6 3.82v
0.0  v  4 |_____| 5 3.80v



ic2      LM358
               _____
6.35v  1 | *       | 8 7.61v
3.10v  2 |          | 7 3.30v
3.45v  3 |          | 6 1.89v
0.0  v  4 |_____ | 5 5.67v



ic3      CD4047
              _____
6.75v  1 |*       | 14  6.97v
0.15v  2 |         | 13  6.77v
6.42v  3 |         | 12  0.0v
6.98v  4 |         | 11  3.53v
6.98v  5 |         | 10  3.52v
6.98v  6 |         | 9    0.0  v
0.0  v  7 |_____| 8    0.0  v


ic4      MN3007
              _____
6.97v  1 |*       | 8 4.45v
3.93v  2 |         | 7 4.45v
4.10v  3 |         | 6 3.52v
0.0  v  4 |_____| 5 0.0  v



Q1  2n5087      E 3.56     B 2.94    C 0.0

Q2   2n5088    E 3.80     B 4.30    C 7.62

Q3   2n5088    E 6.97     B 7.60    C 7.62








-Keith
I build stuff everyday.

oskar

Hi!

If you get tremolo and no chorusing you are only hearing the delayed signal. The chorusing happens when the delayed signal is mixed with the original.check the 22k resistor between IC1a and IC1b.

The Iron Chef

Hej Oskar,

     Thanks for the suggestion.  the 22k resistor checked out OK.  Now I seem to have broken something as I'm not passing any signal now.  Time to audio probe!

tak
-Keith
-Keith
I build stuff everyday.