Future PSU designs

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exxos
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Re: Future PSU designs

Post by exxos » Sun Oct 07, 2018 9:52 pm

dhedberg wrote:
Sun Oct 07, 2018 9:44 pm
...and it's a PSU with high voltage. Mess it up and you may not even be able to ask Chris for help! ;-)
True.. but only mains input is 110/230V, rest is low voltage. I like low voltage, safe and friendly :) Unless its half a million volts, I like that to ;)
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

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Axnfell
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Re: Future PSU designs

Post by Axnfell » Mon Oct 08, 2018 8:25 pm

True, oh well...

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Re: Future PSU designs

Post by exxos » Thu Oct 11, 2018 6:08 pm

Farnell taking the P*ss again..

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£70 price jump over a week :evil: :evil:
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

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Re: Future PSU designs

Post by exxos » Thu Oct 11, 2018 9:26 pm

I've found a cheaper alternative, still same specs, just different manufacture, so ordered 10 to make sure they physically fit, looks like they will looking at the datasheets. Hopefully be here tomorrow. Also ordered 100 SCR's, and 100 of each of the controllers (plus some other bits) from mouser. I pretty much have all the bits then, other than the transformers and bulk caps...

The assembly place seems to be going at less than snail pace lately, so if time permits, I may see if I can build up a few pcbs myself. At least it would get the ball rolling finally.
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Future PSU designs

Post by troed » Thu Oct 11, 2018 9:33 pm

exxos wrote:
Thu Oct 11, 2018 9:26 pm
The assembly place seems to be going at less than snail pace lately, so if time permits, I may see if I can build up a few pcbs myself. At least it would get the ball rolling finally.
Watch your RSI. No one becomes any happier by it stopping you completely ...

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Re: Future PSU designs

Post by exxos » Thu Oct 11, 2018 9:38 pm

troed wrote:
Thu Oct 11, 2018 9:33 pm
Watch your RSI. No one becomes any happier by it stopping you completely ...
Thanks.. Yes, plan on mostly starting the SMT stuff.. which isn't as though going , someone else can "pick n place" ;)
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
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Re: Future PSU designs

Post by exxos » Fri Oct 12, 2018 8:20 pm

Pretty much as far as I could get as I ran out of IC's (on order from Mouser along with the larger SMT capacitors).

These alternative inductors seem pretty much identical specification and physically wise. Oddly the coil is wound the opposite way the previous ones, hopefully the electrons will not get too confused about going round the coil in the opposite direction than before.

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4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: Future PSU designs

Post by Axnfell » Sat Oct 13, 2018 8:02 pm

Maybe it will work like water down the toilet in the Southern Hemisphere, as in it turns the opposite way to us in the northern hemisphere, if this is the case then we may need to plug them into and extension lead from below the equator, I better order one now, B&Q only do up to 25 meters, I wonder where I can order a 2000 mile one from???

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Re: Future PSU designs

Post by exxos » Mon Oct 15, 2018 4:13 pm

Not much to see really here.. But managed to assemble 2 PCBs fully (aside from the transformers which should be here tomorrow).

The first PCB is undergoing testing :)

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EDIT:

22 transformers and 88 caps arrived with some other bits just :)
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IMG_3300.JPG (57.48 KiB) Viewed 86 times
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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