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guitar sustainer unit PCB files
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Brian Cohen 5 years ago
Hi. I'm looking to see if there is an existing and validated design for the Fetzer Valve board with the LM 386 already published. If you're unfamiliar with it it can be found [here](https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjR85_PrtviAhWIc98KHda4A6EQjRx6BAgBEAU&url=http%3A%2F%2Fschematron.org%2Fsustainer-wiring-diagram.html&psig=AOvVaw1vvm2Yigzzd-xlpkNjBboz&ust=1560133872622774). I am attempting to build several guitar sustainer units.
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andyfierman 5 years ago
Have a look at: [https://easyeda.com/hebert.luiz.hb/Ruby_Amplifier-eee2cd1d57534741af140a658ecdc3cc](https://easyeda.com/hebert.luiz.hb/Ruby_Amplifier-eee2cd1d57534741af140a658ecdc3cc) A simple change to the front end will convert it to the common drain stage that the so called "Fetzer" amp stage uses. You might also be interested in: [https://easyeda\.com/example/Tesseract\_Guitar\_Practice\_Amp\-MjP71jBni](https://easyeda.com/example/Tesseract_Guitar_Practice_Amp-MjP71jBni) Note that you can simulate the whole design in EasyEDA: see the simulation files for Tesseract and please read (3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) You might also like: ![image.png](//image.easyeda.com/pullimage/nrAx0piplfxG19PvP3lPnRsYT9M9iY5jvK2jWKMP.png) [https://www.rs-online.com/designspark/design-of-a-korg-nutube-amplifier-part-1-tube-basics](https://www.rs-online.com/designspark/design-of-a-korg-nutube-amplifier-part-1-tube-basics) There is a simulation model for this device but it does not run in ngspice. It does however run in LTspice so the simulatable parts will be revisited when we swap from using ngspice to LTspice. :)
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andyfierman 5 years ago
More stuff to play with... [https://easyeda\.com/example/Origami\_a\_collection\_of\_guitar\_effects\_\-JFa4mEWe8](https://easyeda.com/example/Origami_a_collection_of_guitar_effects_-JFa4mEWe8)
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