Current lover

[GVC66]

Sounds great, but I have not boxed it yet because in the "up" position the flange is cutting in and out.  Any ideas would be greatly appreciated...

[Scruffie]

Clock trim set wrong, VCO struggling (this can happen with the diode around the 311) bad solder joint.

[GVC66]

Thanks,  nothing looks cold.  Possibly a bad 311 or diode?  I am going to reflow everything around the clock and see if the solder is the issue. 

Thanks again!

[Scruffie]

Not the 311, if it's flanging, that's working, the diode, it has a funny effect and can not work right from the current source. It may be the clock and bias setting though, they interact a bit, also, 9 or 15V? I think the VCO (311 and diode) works better at 15V.

A schottky may do better in the diode spot but i've heard of this issue and never seen a perfect cure, some say a 1N914 or 1N4002 is better... I think if you search DIY stompboxes, someone (I think Gaussmarkov?) did some scope tests.

But it could be a bad joint and could be incorrect setting and a description isn't everything, could be wrong, just sounds familiar.

Voltages may help.

[GVC66]

Thanks a ton.  Gotta love this community.  I will post again when I have results.

[GVC66]

Ok, reflowed and socketed the diode around the 311.  I am running at 9 volt.  With a 1n4001 I am not getting any flange now.  I just ordered some 4002s from tayda.  To make things more frustrating I am not getting any signal on the collasalus build either.  I have built a ton of pedals and not having much luck with my first two flangers...

[GVC66]

1n4002 came in today.  Still no flange.  I hate flangers now.  Out of all of the builds I have done only two do not work, collasalus and the current lover.

[Scruffie]

Do you have any other caps to try in C18?

Might be time for you to post up your full voltages too.

Also, can you describe your issue a little better, does it cut out at the top of the sweep? Randomly cutting in and out?

[PimpMyTone]

I got a similar problem an my mistake was that I forgot to jumper the send and return pads together .

[GVC66]

Thanks for the help.  I will take the time to get voltages out there when I get some time.  I jumper end the send and return.  I did initially get flanging and it would switch off at the top but since I switched the diodes... Nada.  What would you suggest for C18?

[GVC66]

This is my last shot at getting a flanger working.  (Posted voltages on the collasalus with no luck)...

Here are my voltages with a reference of 9.33V. 

3007:
1=9.26
2=.2mv
3=3.1
4=.3mv
5=.3mv
6=9.26
7=8.93
8=8.93

311
1=.5mv
2=varies
3=varies
4=.5mv
5=9.26
6=9.26
7=varies
8=9.26

4013
1=.3mv
2=9.26
3=varies
4=.3mv
5=9.26
6=.5mv
7=.5mv
8 through 11= .1mv
12=9.26
13=.1mv
14=9.26

324n
1=4.57
2=4.27
3=4.51
4=9.27
5=varies
6=varies
7=varies
8=7.96
9=varies
10=varies
11=.2mv
12 through 14 varies

4049
1=9.26
2=9.26
3=.2mv
4=.1mv
5=9.26
6=9.26
7=.3mv
8=.1mv
9=9.26
10=9.26
11=.2mv
12=.2mv
13=2.2mv
14=.2mv
15=9.26
16=1.7mv

4558
1=4.4
2=4.4
3=3.95
4=.2mv
5=4.52
6=4.57
7=4.77
8=9.26

[Scruffie]

Your clock isn't working (the CD4013) find out why, possibly a bad solder joint, possibly bad ESD handling and it's blown.

The rest seems alright though so that's good.

[GVC66]

Replaced the cd4013 but no dice.  I am reaching my wits end with this thing!