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/diy/ - Do It Yourself

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>> No.1947007 [View]
File: 103 KB, 1000x800, wiring for dollars.jpg [View same] [iqdb] [saucenao] [google]
1947007

>>1946931

that's no good. you need to run the relay from the same 12V battery coz your 9V is gonna die very quickly.

>>1946970

you're doing it very wrong. just bias your transistor in the usual way, then put a cap in series with the input which will remove the DC component.

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