[sdiy] Jim Dunlop Cry Baby Wah-Wah.. 500mH inductor replacement with an inductor simulator circuit.. Feasable ??

[brianw]

I was going to recommend moving all of the transformers far away from the pedal board, and then run longer power cables for the low-voltage supplies. Although many of your supplies are AC, I'm assuming that there's far more EM coming directly from the transformer windings than from the cables that carry AC power.

I'm biased, though, because I always prefer to simplify the power when combining lots of little pedals.

Brian


On Jun 13, 2024, at 4:46 PM, Jean-Pierre Desrochers wrote:
> I have a guitar pedal board that uses 8 pedals.
> The first pedal (receiving the guitar) is a Jim Dunlop Cry Baby Wah-Wah.
> The following pedal is a switchable  overdrive with high gain.
> Then the pedal chain goes on with 6 other pedals to a final tuner that drives a guitar amplifier. Ok.
> 4 of these pedals are powered with there separate AC supplies (9VAC, 9VAC, 7.5VAC & 22VAC).
> The other pedals are powered using 9VDC standard BOSS supplies.
> Here is my problem :
> Since the Wah-Wah is connected at the ‘head’ of the pedal chain and uses an internal 500mH inductor in its circuit
> it acts like the secondary of a transformer picking up 60Hz
> from all the nearby transformers of the board.
> I had to unsolder the inductor from the inside PCB and,
> using short lenghts of wires connected to it … place it in the Wah-Wah housing
> at a ‘specific’ place and angle to get the less 60Hz pickup.
> This is annoying.. 
> Now I can play with a little back ground hum when the Wah-Wah is activated..
> I  was wondering if I could use an active inductor simulator circuit
> In place of the 500mH passive inductor.. (??)
> Feasable ??