UK700 PSU running at 18.1 volts

Discussions about Sinclair ZX80 and ZX81 Hardware
Lardo Boffin
Posts: 1093
Joined: Sat Nov 26, 2016 2:42 am

Re: UK700 PSU running at 18.1 volts

Post by Lardo Boffin » Fri Oct 27, 2017 10:22 pm

gammaray wrote:
Fri Oct 27, 2017 10:14 pm
If anybody cares... it is rogue as in outlier not rouge as in makeup :?
I guess the wires are red? :D
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Various Spectrum 48ks plus a DIVMMC future and SPECTRA

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gammaray
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Location: Texas

Re: UK700 PSU running at 18.1 volts

Post by gammaray » Fri Oct 27, 2017 10:37 pm

Like button :!:
5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM

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1024MAK
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Joined: Mon Sep 26, 2011 10:56 am
Location: Looking forward to summer in Somerset, UK...

Re: UK700 PSU running at 18.1 volts

Post by 1024MAK » Fri Oct 27, 2017 10:49 pm

gammaray wrote:
Fri Oct 27, 2017 10:14 pm
If anybody cares... it is rogue as in outlier not rouge as in makeup :?
Thanks :D
I've updated my post...

Mark

gozzo
Posts: 448
Joined: Fri Jul 08, 2011 8:52 pm

Re: UK700 PSU running at 18.1 volts

Post by gozzo » Sat Feb 03, 2018 3:49 pm

you could fit a couple of 1n5401s between the output of the bridge rectifier arrangement and the cap..? that'd drop the output a bit...

gozzo
Posts: 448
Joined: Fri Jul 08, 2011 8:52 pm

Re: UK700 PSU running at 18.1 volts

Post by gozzo » Sat Feb 03, 2018 3:50 pm

or double up on the bridge diodes, use 2 in series for each quarter?...

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