You need to use EasyEDA editor to create some projects before publishing
Need help with my schematic...
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reigovilbiks 4 years ago
Is there any way to convert this schematic to EasyEDA format so I can send it to print and assembly? Or maybe some generous soul can convert it for me? Thanks! ![microphone.jpg](//image.easyeda.com/pullimage/nCDu9iINuh0R0pL3T4zZZowczRbvIntxL6WKCq2l.jpeg)!
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andyfierman 4 years ago
"Is there any way to convert this schematic to EasyEDA format so I can send it to print and assembly?" Yes: start by reading this: [https://easyeda\.com/andyfierman/Welcome\_to\_EasyEDA\-31e1288f882e49e582699b8eb7fe9b1f](https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f) and then learn to use EasyEDA. Then you can send your PCB off for manufacture and, if you choose SMT components from the JLCPCB Assembled library, you can have it assembled too. ( i suggest this because it is not possible to convert an image to a schematic.)
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andyfierman 4 years ago
This is a very poorly thought out design. As it stands will have a considerable DC offset across the headphones due to the current through the zener causing approximately being amplified bythe two direct coupled stages. Depending on the setting of the "lf noise adjust" pot, the current through the zener will be between about 4.5V/1.5Meg = 3uA up to 4.5V/10k = 450uA. Depending on the setting of the second pot\, the current through the zener will then cause a DC offset of between \-3uA\*500k = \-1\.5V up to \-450uA\*\(500k\+1\.5Meg\) = 900V \(i\.e\. the first opamp output will hit the \-ve rail\)\. That DC offset will then be multiplied by -100x due to the DC gain of the second opamp stage. So, it's rubbish. What do you want this circuit for? What problem are you trying to solve or design aim are you hoping to achieve? If you can state that clearl to us as a Design Requirements Specification then maybe we can help you reach a design that meets it rather waste yours and our time helping you to spend your money on a piece of junk. :)
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