Prescription Electronics Yardbox

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Prescription Electronics Yardbox

Travis
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This post was updated on .
now VERIFIED

I was asked to build this for a friend so I'll share the layout I drew for it

 photo 8211f727-573f-4244-91cc-2b6e41792ddf_zpsgibdnwho.png
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Re: Prescription Electronics Yardbox

Travis
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This post was updated on .
Sorry guys I just noticed that I forgot to add the 22uf electro between -9v and gnd. Layout is now updated
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Re: Prescription Electronics Yardbox

motterpaul
This post was updated on .
Travis...

I wanted to share the layout I did based on your Yardbox. This is closer to a Tonebender Mark III.

EDIT: I noticed a polarity problem with the power inverter so I have fixed this as of 8-3-15 - no one complained so I guess no one noticed, but this layout actually works really well.

This has a power inverter so you can use regular +9 voltage.

I use matched lower HFE AC125s for Q1 and Q2, and a higher gain one for Q3. I took out the gain pot and  eliminated a resistor which gave this yardbox more gain.

Thanks for the head-start, I really appreciate it: