Power supply on Amp2.1

DIY Products&Projects DIY Product Questions
1

Hi , happy to join this forum - first post about Power Supply on Amp2.1 .
I’m using as fix power supply a AC-DC 24V-6A via the VH 3.96 of the Amp 2.1 board . What will happen if I simultaneously plug in an extra DC supply via the jack ?

  1. when power is on VH 3.96 ?
  2. when power is off on VH 3.96 ?
    The aim of the question is to secure an alternative supply with batteries . Thks
2

Hi Eric,
Welcome to the forum.

It wouldn’t be a good idea to connect a mains power supply and batteries simultaneously.
I would suggest that if batteries are required then either you mechanically switch between the two supplies or if the batteries are rechargeable, make them as the main supply and add a charger.

3

Hi Steve ,
Ok with your answer , I can of course include a mechanical switch upfront the socket supply to either supply with batteries or via a transformer .
But, with consideration of product reliability, how do you appreciate the design including 2 supply sockets which can be uncompatible to each other ? Could you pls check ?
This question is also linked to the fact that batteries generally also act as buffer for Power variations , the intention being not to charge the batteries via the board

4

Hi Eric,
I am a bit confused why you want the battery attached, if it’s just to smooth the supply then you should use a capacitor bank.
Steve

5

Hi Steve ,
When plugin Power into the VH 3.96 , the jack socket receives current.
When plugin the jack socket to teh PS, the VH 3.96 receives no current

6

Hi Eric,
From what you are saying, it appears that when you plug into the jack socket an internal switch inside the socket overrides the VH3.96 socket input?
I don’t have a Amp2.1, so I cannot check this.
Steve