PSU 230V vs 110V

Falcon 030 motherboards.
Post Reply
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

PSU 230V vs 110V

Post by exxos »

(Table values will be updated as they are worked out)

It looks like there are just some small resistor changes around the main drive transistor. Makes sense that higher voltages also tally with higher voltage resistors..

230_110.jpg
230_110.jpg (4.91 MiB) Viewed 8606 times


PART 230V 110V
R9 0.33R 0.27R
R2 51K 39K
R2A 51K N/F
R7 33K 15K
C5 47uF/400V 47uF/200V
T1 230V / 0.45A 117v / 0.9A
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
mikro
Posts: 474
Joined: Mon Aug 28, 2017 11:22 pm
Location: Kosice, Slovakia
Contact:

Re: PSU 230V vs 110V

Post by mikro »

From what I can see, the caps are also a bit different (for less voltage, that is). If you want, I can write the values down for you.
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: PSU 230V vs 110V

Post by exxos »

mikro wrote: Thu Jul 12, 2018 4:17 pm From what I can see, the caps are also a bit different (for less voltage, that is). If you want, I can write the values down for you.
ahh, yeah, the main cap will be different voltage, but think others will be the same.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: PSU 230V vs 110V

Post by exxos »

Actually the transformer may be different..

Mine (230V) has :

ATR-L043-1
AC INPUT 50/60Hz
230V / 0.45A
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
mikro
Posts: 474
Joined: Mon Aug 28, 2017 11:22 pm
Location: Kosice, Slovakia
Contact:

Re: PSU 230V vs 110V

Post by mikro »

Yes, that note about the transformer is a good point (and a huge overlook on my side).

ATR-L043-2
AC INPUT: 50/60 Hz
117v / 0.9A

The big cap: 47uF / 200V
The three second-biggest caps: 1000uF / 16V
The slightly smaller cap near the big three: 330uF / 25V
The three small caps: 2x 47uF / 25V & 22uF / 25V (in the center of the PSU)

So I guess I have my answer? It would seem I can't simply change caps and resistors to get a 230V one.
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: PSU 230V vs 110V

Post by exxos »

mikro wrote: Thu Jul 12, 2018 6:40 pm Yes, that note about the transformer is a good point (and a huge overlook on my side).
So I guess I have my answer? It would seem I can't simply change caps and resistors to get a 230V one.
Looks like you would need to change the transformer , plus cap & resistor changes.. getting on for a re-build really it seems.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
mikro
Posts: 474
Joined: Mon Aug 28, 2017 11:22 pm
Location: Kosice, Slovakia
Contact:

Re: PSU 230V vs 110V

Post by mikro »

exxos wrote: Thu Jul 12, 2018 6:47 pmLooks like you would need to change the transformer , plus cap & resistor changes.. getting on for a re-build really it seems.
... or put your PSU instead. :) Nobody can blame me for not trying! I guess I'll change the exploded cap, test it (on 110V this time) and sell it without the base.

Chris, if you think you could use it for your experiments, I'll gladly donate it to you.
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: PSU 230V vs 110V

Post by exxos »

mikro wrote: Thu Jul 12, 2018 7:18 pm Chris, if you think you could use it for your experiments, I'll gladly donate it to you.
If it unfixable then sure , can look a bit closer at parts I guess.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
mikro
Posts: 474
Joined: Mon Aug 28, 2017 11:22 pm
Location: Kosice, Slovakia
Contact:

Re: PSU 230V vs 110V

Post by mikro »

exxos wrote: Thu Jul 12, 2018 10:01 pm
mikro wrote: Thu Jul 12, 2018 7:18 pm Chris, if you think you could use it for your experiments, I'll gladly donate it to you.
If it unfixable then sure , can look a bit closer at parts I guess.
Posted today. Surely it's fixable but I have realised that I'm too lazy to desolder the cap(s), investigate which (quality) ones I need to purchase, order it, wait, solder, obtain a 110V power source and then finally put on eBay. If it helps you to extend your knowledge or improve your products, that's a much better reward.
User avatar
exxos
Site Admin
Site Admin
Posts: 23496
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: PSU 230V vs 110V

Post by exxos »

mikro wrote: Fri Jul 13, 2018 2:41 pm Posted today. Surely it's fixable but I have realised that I'm too lazy to desolder the cap(s), investigate which (quality) ones I need to purchase, order it, wait, solder, obtain a 110V power source and then finally put on eBay. If it helps you to extend your knowledge or improve your products, that's a much better reward.
Cool thanks :) Yeah, will investigate it when I get a moment. Probably worth documenting blown stuff should someone else do it in the future ;)
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Post Reply

Return to “Falcon 030”