Print Page - MadBean Zygote pitch noise

Title: MadBean Zygote pitch noise
Post by: spoontex on August 14, 2020, 10:22:57 AM

Hi,

I've finished my build of the Zygote from MadBean pedals, but when I engaged the pedal an oscillation appear ( exactly 5k )... I tried some different power supply with the same result. Any idea?

https://www.madbeanpedals.com/EP/downloads/fuzz/Zygote.zip

https://soundcloud.com/david-rotger-573523264/zygote-5k-hiss

Title: Re: MadBean Zygote pitch noise
Post by: r080 on August 14, 2020, 02:12:30 PM

Does the frequency change with the knobs or if you touch the transistors? I am no expert, but that is something I would do to try to differentiate whether it is from the charge pump or something else.

Is this pedal the only thing connected in the chain when testing?

Title: Re: MadBean Zygote pitch noise
Post by: spoontex on August 14, 2020, 02:27:34 PM

With the pots not, but if I touch the charge pump, yes it changes.

Title: Re: MadBean Zygote pitch noise
Post by: r080 on August 14, 2020, 04:19:59 PM

The google site search is pretty helpful. If you try something like this, you might come across some answers: site:diystompboxes.com 1044 whine

I assume you etched this board yourself. Do you have a good trace between the charge pump pins 1 and 8? Is your grounding solid?

Posting pictures of your build can be helpful.

Title: Re: MadBean Zygote pitch noise
Post by: Marcos - Munky on August 14, 2020, 04:35:43 PM

What did you used for the charge pump? The MAX1044?

Title: Re: MadBean Zygote pitch noise
Post by: spoontex on August 15, 2020, 02:59:35 AM

Quote from: Marcos - Munky on August 14, 2020, 04:35:43 PM
What did you used for the charge pump? The MAX1044?

yes!

DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: spoontex on August 14, 2020, 10:22:57 AM