Lead solder zeners
- Thread starter jimilee
- Start date
Thought they were opposing clippers. Didn’t realize they were facing each other like that. I’m also curious to the theory behind it.
All I know is I threw one together yesterday and love it!!
jimilee
Well-known member
I got some wicked buzzing in mine.
Did you use a breakout for the switch and have the leads to the jacks up and away from the board?
DailyDovetails
Well-known member
If I recall the zeners have current in both directions. I think it would make some sort of soft clipping.
jimilee
Well-known member
It’s still on my testing rig.
That could possibly be part of the problem. This circuit is brutally high gain and susceptible to being noisy and and oscillating if all of the building “best practices” are followed.
jimilee
Well-known member
I was wondering about that.
comradehoser
Well-known member
Ya, built the Aion Diezel vh4, which in my imagination lives in the same general neighborhood as Soldano amps, and had oscillation problems in testing until I boxed it.
jimilee
Well-known member
It's just almost an electrical buzz on pin 3 of I.C. 2. It's driving me nuts.
Battery or ac adapter? Your description makes me think some kind of power supply coupling
darwin999
Well-known member
You might crudely test the impact of shielding by grounding a layer of aluminum foil wrapped around the test board - just avoid any electrical shorts (could use a double layer of foil + wax paper, with wax paper on the inside. I doubt this will provide full shielding, but the question is 'does it reduce the buzz at all?'.
jimilee
Well-known member
Adapter. I think I may have to remove the pot next to the switch and go over everything again. Some of the grounded parts were difficult to solder.
It really behaves like a high gain tube amp in that it don’t take much to induce noise or buzz.
Can you quickly test with a 9v battery instead of the AC?
I’m still confident that you have it built right and its environmental factors causing your problems.
jimilee
Well-known member
I will try it with a battery and also wrap some shielding around it. I did take it to another room with the same results.
comradehoser
Well-known member
Did you box it, my dude?
I would try that first. At least stick it in the enclosure with the jacks attached.
[edit]: and maybe route the in/out cables along the walls of the enclosure if you can.
I would try that first. At least stick it in the enclosure with the jacks attached.
[edit]: and maybe route the in/out cables along the walls of the enclosure if you can.
If he does it and it works, I wouldn’t expect to see him again for a few weeks, as he won’t be able to stop playing it. Such a great pedal! Makes my Princeton, at bedroom volume nearly indistinguishable from my SLO30!
comradehoser
Well-known member
Maaaaan. I better get building mine.
I have a slog of interesting projects rapidly backing up my purchasing queue for components. The only thing I hate more than discovering I already have a component that I ordered is discovering that I need a component that I didn't order.
I have a slog of interesting projects rapidly backing up my purchasing queue for components. The only thing I hate more than discovering I already have a component that I ordered is discovering that I need a component that I didn't order.
