java boost puzzling me *SOLVED*

[barret77]

Hello all

I've built a java boost, but it is behaving quite oddly;

I'm not getting voltages above 1V at the collector by any means.
I recreated then the circuit with Falstad circuit simulator, and it yelded similar results.
Is the schematic wrong? Is the biasing method wrong? Should I expect -6 or around 0 V at the collector?
The pedal seems to work, but I'm not sure if it's sounding right. I would appreciate a lot if anyone check the simulation:

The schematic I'm referring to:


just go to http://www.falstad.com/circuit/

The circuit simulator should appear in a pop up (you need sun java installed, you won't regret if you already don't have it)
click in import and copy/paste the following:


$ 1 5.0E-6 10.391409633455755 50 5.0 50
R 192 96 192 32 0 0 40.0 9.0 0.0
d 192 128 192 96 0
c 256 96 256 128 0 4.7E-5 9.0
g 192 128 192 192 0
w 128 96 192 96 0
w 192 96 256 96 0
w 256 128 192 128 0
w 256 128 320 128 0
w 320 128 320 96 0
w 320 96 384 96 0
r 384 96 384 256 0 470000.0
w 128 96 32 96 0
w 32 96 32 416 0
w 32 416 432 416 0
w 384 96 528 96 0
r 528 96 528 128 0 5000.0
r 528 128 528 176 0 5000.0
r 640 208 640 256 0 50000.0
r 688 128 688 176 0 1000000.0
c 592 128 640 128 0 1.0E-8 0.29177620965905904
w 528 128 592 128 0
w 640 128 688 128 0
w 688 128 688 64 0
w 688 176 688 336 0
w 688 336 640 336 0
c 640 336 640 256 0 1.0E-7 -0.6600660520274269
w 640 208 528 208 0
w 528 208 528 176 0
w 496 256 384 256 0
w 528 288 528 208 0
w 480 288 432 288 0
c 432 288 432 352 0 4.7E-5 -0.5962344970939526
r 480 320 480 384 0 3900.0
w 480 384 432 384 0
w 432 384 432 352 0
w 480 288 480 320 0
c 144 224 272 224 0 6.8E-9 -7.9110325511897885
w 272 272 272 224 0
w 272 224 384 256 0
w 144 224 160 272 0
w 144 224 64 160 0
w 160 272 160 320 0
r 160 320 160 368 0 1000000.0
g 160 368 160 400 0
w 640 336 512 448 0
w 512 448 288 448 0
w 288 448 160 368 0
O 688 64 608 64 0
w 272 272 272 320 0
c 272 320 208 320 0 1.0E-5 0.0
R 64 160 64 128 0 1 440.0 0.1 0.0
r 384 256 384 384 0 68000.0
t 496 256 496 288 0 -1 7.790720114651007 -0.4493607650899296
w 512 288 528 288 0
w 432 384 432 416 0
w 384 384 432 384 0
o 47 64 0 2 1.25 9.765625E-5 0
o 50 64 0 3 0.625 9.765625E-5 1
o 50 64 0 3 0.625 9.765625E-5 2

Any thoughts/ideas?

Thanks a lot...

[SISKO]

Hi . well.. you the schematich its definetly wrong.. the juction  of ra-rb-c5 Must be conected to ground.
Other wise youll not get biased correctly
OK thats all (i think)
ROCK ON
SISKO

[barret77]

ooooops
I got it
I got confused in relation to the positive ground;
I changed the wiring of the jacks/battery, and it worked...

So for the records, this schematic is correct, and it is Positive Ground. Torchy layout is also correct but the level pot is wired backwards...

Thanks!