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WANTED: Microdrive caseI am after a Microdrive case or a faulty spares & repairs one
... and im thinking the voltage regulator as to how its positioned ... -
DivIDE+ and the 48k SpeccyI've 3 48k speccies of various revisions and none of them are working with my DivIDE+ yet all my 128's do, yet I'm sure when I first had it I'm sure …
... a discussion about replacing the 7805 with a modern substitute maybe ... just replace it with another 7805. The consensus seemed to be ... that the 7805 is the tried and tested ... -
ZX Spectrum Woes...In my endeavours to get my second Spectrum (Issue 3) working I have replaced the CPU, memory and lower ram. I have fitted sockets for the CPU and me…
Again though Alan, check that voltage regulator! -
ZX Spectrum Woes...In my endeavours to get my second Spectrum (Issue 3) working I have replaced the CPU, memory and lower ram. I have fitted sockets for the CPU and me…
... in = 11.68V
7805 Volts out = +5.07V
... power supply:
7805 Volts in = 11V
7805 Volts out = +5 ... -
Grey +2 regulatorIv just checked the regulator and its a TS2940. Could someone tell me the equivalent please?
Thank you ZetrO for the reply, but I thought the grey +2 needed a 1.5 amp regulator? -
Grey +2 regulatorIv just checked the regulator and its a TS2940. Could someone tell me the equivalent please?
... needed a 1.5 amp regulator?[/QUOTE]
Alas my ... (low drop out) (non-fixed) regulator, within the Spectrum +2 configuration ... -
Grey +2 regulatorIv just checked the regulator and its a TS2940. Could someone tell me the equivalent please?
[QUOTE=Modge;520919]Thank you ZetrO for the reply, but I thought the grey +2 needed a 1.5 amp regulator?[/QUOTE]
Im using the KA78T05 [B]3[/B] Ampere voltage regulator, on my +2 Grey ,is very stable.
;) -
FS: Quite a bit this time!Had a bit of a haul the weekend, got most of it working too, from memory (because im at work and not at home) Ive got; 3xGrey +2's 1x48k+ 4x48k Onl…
Whats left is now 3 greys and one 48k, I stupidly just blew one up testing what I thought was a good PSU, probably just the 5v regulator if im lucky, of which I have several new ones. -
likely damage caused to +2 by too highly rated supplyHi. did have a quick search but couldn't see an answer. I've been offered a +2 which the previous owner damaged by connecting too high a power supply…
I had a Speccy that was given a jolt of over voltage from a dodgy PSU, luckily it only took out the 5v regulator which is easily replaced -
likely damage caused to +2 by too highly rated supplyHi. did have a quick search but couldn't see an answer. I've been offered a +2 which the previous owner damaged by connecting too high a power supply…
... to replace the 5 volt regulator. With some of the disucssion ... a 2 amp 5 volt regulator.
[B]The ... -
likely damage caused to +2 by too highly rated supplyHi. did have a quick search but couldn't see an answer. I've been offered a +2 which the previous owner damaged by connecting too high a power supply…
... to replace the 5 volt regulator. With some of the disucssion ... a 2 amp 5 volt regulator.
[B]The ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... the above will change the 7805 by the TRACOPOWER 2150, change ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... instead of the wasteful linear regulator. You can run everything on ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... instead of the wasteful linear regulator. You can run everything on ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... voltages, I would remove the 7805 and plumb in a +12v ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... with no problem, because the 7805 has a short circuit protector ... 1800mAh, I will change the 7805 by the TRACOPOWER 2150, TR4 ... -
ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…
... which is generated by the 7805 reg. My thinking is that ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... converter in place of the 7805, you're done. IIRC the ... mA... ;-) ) - that is with the 7805 still in place.
+D problemi picked up another one of these but it seems to have a problem every time i try to format a disk it comes up with the following message after trying…
now lost the +5v from my +3 psuthe voltages i get from it are -12v +12v +0.61v what part needs replacing in the housebrick that is the PSU? having a bad weekend :-(
... noted there's a 12v regulator on the left hand side ...now lost the +5v from my +3 psuthe voltages i get from it are -12v +12v +0.61v what part needs replacing in the housebrick that is the PSU? having a bad weekend :-(
... ?
The transistor and regulator should be bolted to the ...now lost the +5v from my +3 psuthe voltages i get from it are -12v +12v +0.61v what part needs replacing in the housebrick that is the PSU? having a bad weekend :-(
... ?
The transistor and regulator should be bolted to the ...Amstrad Toast Rack?Hello there my fellow WoS'ers Recently I have been very lucky with my brother giving me a Sinclair Spectrum 128K+ (Toast Rack), it needed a little a…
... the typical heatsink of a 7805 spectrum 48k . I think that ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... for the cheap but hot 7805, and fully pin-compatible.New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... for the cheap but hot 7805, and fully pin-compatible.[/QUOTE ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... that I have replaced the 7805's
to be ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... /> I am just surprised a 7805 could whopp out that kinda ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... /> I am just surprised a 7805 could whopp out that kinda ...New speccy modelThe 48k toastrack ;) [img]http://alistairtesting.no-ip.org/48k-toastrack.jpg[/img]
... uses 78S05 (2A) regulator. Since the RECOM regulator is 1.5A (the ...
