As shown in the picture, I will have 4 power supplies in series, three 48v, one 12v.
Can I power the volt gauge from the 12 volt power supply, and also measure the series voltage of all the power supplies?
Or should I use a separate power supply or an isolated DC-DC converter powered from the 12-volt power supply?
Thankyou for any help you can offer.
Below is a picture of the power supplies in series connected to the volt gauge.
Below are the connections to the volt meter/gauge.
Can I power the volt gauge from the 12 volt power supply, and also measure the series voltage of all the power supplies?
Or should I use a separate power supply or an isolated DC-DC converter powered from the 12-volt power supply?
Thankyou for any help you can offer.
Below is a picture of the power supplies in series connected to the volt gauge.
![](/proxy.php?image=https%3A%2F%2Fi.imgur.com%2FnHaYLvu.png&hash=84f44f40f13d658020d90d047d681f3e)
Below are the connections to the volt meter/gauge.
![](/proxy.php?image=https%3A%2F%2Fi.imgur.com%2FyitPokO.png&hash=e0d979885e7935a503abf49edb2d4f23)