How to convert 3vDC to 3vAC?

[Athosworld]

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?

 

[Athosworld]

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.

 

[Nigel Goodwin]

Post a diagram of exactly how it's all connected.

 

[Athosworld]

Post a diagram of exactly how it's all connected.

This is a poorly made diagram of how it is connected.

 

[Pommie]

Why doesn’t the led flicker normally... or does it? The led is polarized but it doesn’t stop when the AC reverses.

Same as any AC light. It does flash but too fast for you to see.

Mike.

 

[Nigel Goodwin]

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.

 

[audioguru]

This thread is full of errors because 1.60Hz and 1) 60Hz or 2.500mA and 2) 500mA are completely different.

 

[Athosworld]

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.

What do you mean with there is no live or neutral?

 

[Nigel Goodwin]

View attachment 138533What do you mean with there is no live or neutral?

It's 6V, isolated through a transformer, that removes any Live or Neutral - which only applies to live mains, and is a function of which wire is earthed at the substation.

 

[Athosworld]

It's 6V, isolated through a transformer, that removes any Live or Neutral - which only applies to live mains, and is a function of which wire is earthed at the substation.

Is it then positive and negative? Does it still alternate direction?

 

[Diver300]

Is it then positive and negative? Does it still alternate direction?

It's not positive and negative, because it still alternates in direction.

There is no name (that I know of) for ac signals. The two wires can be used interchangeably. They are sometimes labelled "~" which you will see if you do an image search for "bridge rectifier".