Author Topic: Laboratory power supply  (Read 910 times)

0 Members and 1 Guest are viewing this topic.

Offline frantalTopic starter

  • Contributor
  • Posts: 15
  • Country: it
Laboratory power supply
« on: May 07, 2020, 08:41:56 am »
I would like to build a protected power supply unit for repairs using an isolation transformer and a variac.
I have modified a scheme found on the internet and would like to ask if you consider it suitable for the purpose or if you have suggestions for perfecting it.
The main and secondary switches are 2 thermal magnetic switches, one 16A, the other still to be taken.
 

Offline coromonadalix

  • Super Contributor
  • ***
  • Posts: 7014
  • Country: ca
Re: Laboratory power supply
« Reply #1 on: May 07, 2020, 12:20:28 pm »
Hi     What kind of equipment do you want to test or connect to it ?

Tests and debugging ?
 

Offline eblc1388

  • Frequent Contributor
  • **
  • Posts: 400
  • Country: gb
Re: Laboratory power supply
« Reply #2 on: May 08, 2020, 01:16:31 am »
... suggestions for perfecting it.

Based on your original design, I have come up with a slightly different design which I think will be easier to build and more fun to use.

I have replaced the input surge suppression by a simple timer relay(220V 0~5 second delay ON timer) which should greatly simplify the design and improve reliability.  I always want an indication on whether the output socket is LIVE or DEAD so I added a voltage indicator. It works down to 12V AC.
 
I stress that will be my personal preference and yours will be different. Please let us know of your final design.


 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf