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How to convert 3vDC to 3vAC?

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Athosworld

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I need to convert 3vDC to 3vAC (EXTREMELY IMPORTANT!: KEEP THE SAME VOLTAGE BUT AC) but, is there any way to convert it WITHOUT a transformer? (If it contains capacitors: can my 16 volt capacitors work on 3vAC?
 
It's simply 50Hz (or 60Hz), well in the audio range, and has been used as a simple source of audio for as long as electronics has been around. When you touch the input of an audio amplifier and it buzzes, that's mains hum - picked up by your body from the surrounding mains wiring.
Why doesn’t the led flicker normally... or does it? The led is polarized but it doesn’t stop when the AC reverses.
 
Post a diagram of exactly how it's all connected.
This is a poorly made diagram of how it is connected.
0915B548-316F-4691-B757-C7890E9D2089.png
 
This is a poorly made diagram of how it is connected.
View attachment 138519
In post #19 you mentioned a potentiometer - where's that?. You also shouldn't feed AC to an LED as you can destroy it, unless you have another LED (or diode) reverse connected across it - and of course there's no live or neutral.
 
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