Just a little something I knocked up for running PSU's with a load that isn't an ST.
It's made using the load resistors from exxos' store, an old low profile PC heatsink, a 6 pin plug and a bit of veroboard.
First step was to solder up the 5 pin plug onto the veroboard, then the resistors soldered to a common ground on one end that fed back up the veroboard to the plug, ground and the other ends to the 5v and 12v sides of the 6 pin plug respectively.
Then a spot of thermal paste on top of the heatsink and resistors, and sandwich it all up good and tight. Gets quite warm, but good for testing and adjusting without worrying about damaging your ST.
PSU Load for testing
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rubber_jonnie
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PSU Load for testing
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Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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exxos
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rubber_jonnie
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- Posts: 14893
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: PSU Load for testing
I learned from the best 😁exxos wrote: 01 Mar 2020 20:24 Cool. Its like a baby version of mine :lol:
https://www.exxosforum.co.uk/forum/viewt ... 6805#p6805
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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