English Amiga Board


Go Back   English Amiga Board > Support > support.Hardware > Hardware mods

 
 
Thread Tools
Old 09 October 2021, 18:04   #1
fpmpaolo
Registered User
 
fpmpaolo's Avatar
 
Join Date: Aug 2014
Location: Bologna / italy
Age: 43
Posts: 135
A600 PSU MeanWell PSU + Voltmeter / Ammeter

Hello people, I'm going totally NUTS trying to put a Voltmeter / Ammeter on my MeanWell RT-65B PSU.

This is my ammeter / voltmeter (Back)

https://ibb.co/55DTRzN

As you can see there are 2 connectors.
The one with 3 cables is the voltmeter + power supply.
So I put the YELLOW and RED cable on MeanWell's terminal block in port +5V, while the black on MeanWell's COM.

Now.

I'd like to connect the ammeter but...where should I put the black and red cable?

This is the guide I followed to make my MeanWell PSU.

Thanks.
fpmpaolo is offline  
Old 10 October 2021, 07:17   #2
Jope
-
 
Jope's Avatar
 
Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,861
The amp meter must be connected so that the current flows through it. So in series.

Contrary to a volt meter which you connect in parallel.
Jope is offline  
Old 10 October 2021, 19:13   #3
Krashan
Hardware Designer
 
Join Date: Aug 2018
Location: Bialystok/Poland
Age: 50
Posts: 178
Quote:
Originally Posted by fpmpaolo View Post
This is the guide I followed to make my MeanWell PSU. Thanks.
Start with the main (current) circuit.
  1. PSU +5 V output goes straight to Amiga +5 V input.
  2. Amiga ground goes to meter thick red cable.
  3. Meter thick black cable goes to PSU ground.
Then voltage measurement: connect thin red cable from the meter to PSU +5 V output.
Finally meter power supply: connect thin yellow cable to either PSU +5 V or +12 V (not to -12 V!).
Thin black cable is left unconnected.
Note that accuracy of these meters is rather poor, from my experience 5% on voltage, 15% on current.
Krashan is offline  
Old 10 October 2021, 22:15   #4
indigolemon
Bit Copying Bard
 
indigolemon's Avatar
 
Join Date: Jan 2017
Location: Kelty, Fife, Scotland
Age: 41
Posts: 1,293
Took me a while to work it out too, but seems to work (even if with poor accuracy)

Sorry for the huge image but it shows the wiring

indigolemon is offline  
Old 11 October 2021, 08:24   #5
fpmpaolo
Registered User
 
fpmpaolo's Avatar
 
Join Date: Aug 2014
Location: Bologna / italy
Age: 43
Posts: 135
Thanks everyone I managed to install it
fpmpaolo is offline  
 


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Amiga 500 PSU ref P.312503-03 singapore (Heavy PSU) dlfrsilver support.Hardware 15 07 October 2020 17:28
Help for PSU design (Voltmeter - Ampmeter wiring) seb132 support.Hardware 5 27 May 2020 14:42
A4000 PSU -> Mini-ATX PSU mod keropi Hardware mods 53 09 December 2019 03:52
ATX PSU in original Amiga PSU casing TTSAddict Hardware mods 8 15 April 2018 17:01
Amiga 500 PSU ref P.312503 WEST-GERMANY (Light PSU) dlfrsilver support.Hardware 0 18 November 2014 00:54

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 11:02.

Top

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Page generated in 0.14585 seconds with 15 queries