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ZX Spectrum and add-on temperaturesImre Jakli from Hungary sent me some interesting pictures which I think are worth to share. These are about temperatures he measured with a modern to…
... the outside with original voltage regulator:
[IMG]http:// ... ]
And with replaced switching regulator:
[IMG]http://benophetinternet ... .jpg[/IMG]
Default toastrack temperature ;) :
[IMG]http ... -
Toastrack refurbishmentYesterday I opened a drawer in my old desk and discovered 2 complete toastrack 128s and a board only for the same. As I already have a fully working…
... had a toastrack I would just try a 1A switching regulator since I ... -
Running a Spectrum from a battery...?Here's a bizarre idea that crossed my mind the other day: is it possible to run a Spectrum from a 12V battery? You see, I've got this strange idea…
... replace the 7805 voltage regulator with a good switching type (e.g ... hands on a good quality switching regulator that is rated at 1 ... , then I think the 128k toastrack or the grey +2 can ... +5V rail. So a 5V switching regulator circuit would be needed to ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... fit a TSR 1-2450 switching regulator :-
[url="http:// ... 2014/11/zx-spectrum-voltage-regulator.html"]blog.tynemouthsoftware.co. ... /2014/11/zx-spectrum-voltage-regulator.html[/url]
... the Traco 78HT205V for a Toastrack . Good to know it ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... along the lines of : Tracopower Switching Regulator 6.5-36vdc ,Input 5v ... I knew and recognised the "Switching Regulator" bit in the RS ... so much with more modern switching regulators ! I thought it ... leave the order for my Toastrack 128k Tracos for another ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
Switching Regulator for the Toastrack 128k
I am ... .rs-online.com/web/p/switching-regulators/9068487P/"]uk.rs-online ... .com/web/p/switching-regulators/9068487P/[/url] -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... more powerful version of the switching regulator for the Spectrum 128. But ... set up on the 128 Toastrack in a DKtronics keyboard .
regulator so the whole thing would ... it over I have another Toastrack to recap before I get ... -
Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…
... trying to determine whether the Toastrack should also get a ... 2A 5V DC/DC converter / switching regulator would be suitable.
The 128K toastrack and the +2 (grey) ... for the 48K and the Toastrack:
[img]http ... -
Replacing coil with other component?The purpose of the coil transformer, from what I gather in the schematics of the issue 2 spectrum, is to create 5V from about 9-10V. Would it not be …
... transformer with a suitable retcon switching regulator instead? or am my basic ... -
populated Harlequin Rev.D -> Rev.FHi, I like to sell my Harlequin Rev. D board. I modified it to be identical to Rev. F: * switching regulator instead of linear regulator for DC in …
... . F:
* switching regulator instead of linear regulator for DC in
switching to video
* correct sync ... -
XP POWER SR10S05 will not fit on Issue Two in a rubber key caseSo, FOR SCIENCE I decided to see if an XP POWER SR10S05 would fit on my Issue Two board in a rubber key case. Especially since it seems to be *juuuu…
... case just fine with the switching regulator, and I have now put ... -
48K Issue 6a wobbly and flickering TV outputHi folks, Found an untested issue 6A Spec whilst tidying up and it had a warranty sticker on it from a past repair which seemed to be a socketed L…
... swapped the 7805 for a switching regulator (Tracopower). Fed it from a ... -
bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…
... /> Finally I removed the 5V regulator cable from its socket and ... so I changed the 5V regulator and also the electrolytic capacitors ... transverter while using the 5V regulator -> Buzzsasw did run ... at the input of the switching regulator - on the 9V line. ... -
ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
... sink was removed and a switching regulator added. With the heat sink ... -
Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…
... replaced with a
Murata switching regulator. All power rail voltages are ... -
Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... have already had new internal switching regulator fitted (eg a Traco)
Screen corruption with devices on edge connector (grey +2)Hi, I've recently done a full capacitor replacement and replaced all 16x DRAM chips on my grey +2. Prior to this I would get a corrupted screen…
... board has the original 78S05 regulator and L-shaped heatsink. Is ... it worth replacing the regulator with a new one, or ... alternative like a 5 volt switching regulator with higher output?boot fail .. bad address lines A7,A12,A13anybody have any ideas what could be wrong with this specie issue 3B .. work done : removed rom, upper ram & logic put lower ram multiplexers in sock…
... in sockets, full recap, fitted switching regulator, z80 in socket (i may ...What is wrong with this auction?[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250246790438[/url]
... substituting the 5V linear regulator by a switching regulator using a LM2576-5 ...4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?
... lower)
* Replace +5 regulator with switching regulator
* Document this stuff somewhere ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... and thus bypass the internal regulator entirely. Has anyone tried ... the +/-12volt and -5volt switching regulator circuit around TR4/5 ( ... the 7805 regulator with a more modern switching regulator might be ... input to the 7805 regulator through a (suitably rated ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... the input to the 7805 regulator through a (suitably rated) rectifier ... drop that the hard-pressed regulator needs to handle.[/QUOTE]
switching regulator since they are typically around ...My Spectrum has gone a bit dud since doing some Mods, HELPMy father in law and I did some modifications to my 48K rubber key Spectrum last weekend, and now it seems to be very keen to crash, especially when …
... replace a 7805 with a switching regulator, often this involves parts ... from damage. With a switching regulator in its place, it' ... wiki/Low_dropout_regulator"]low-dropout[/URL] regulator, and input a [I ... (around 6~7V depending on regulator type).
...My Spectrum has gone a bit dud since doing some Mods, HELPMy father in law and I did some modifications to my 48K rubber key Spectrum last weekend, and now it seems to be very keen to crash, especially when …
... /wiki/Low_dropout_regulator"]low-dropout[/URL] regulator, and input a [I]regulated ... (around 6~7V depending on regulator type).[/QUOTE]
Agree ... already hard-pressed TR4/5 switching regulator to work a little harder ...7805 Regulator HelpI am hoping to replace the 7805 regulator in my issue 3 48K Spectrum soon. Unfortunately I don't know exactly what to buy to replace it with (my fat…
... 's known as a linear regulator, and effectively it reduces the ... common kind of regulator is known as a switching regulator (or switch mode ...7805 Regulator HelpI am hoping to replace the 7805 regulator in my issue 3 48K Spectrum soon. Unfortunately I don't know exactly what to buy to replace it with (my fat…
... 's known as a linear regulator, and effectively it reduces the ... common kind of regulator is known as a switching regulator (or switch mode ...Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …
... made for use in a switching regulator. It is a very cheap ...Maximum number of Spectrum devicesHi! What is maximum number of devices i can connect to my rubber key Spectrum? Is there somekind of limit? Now i have Interface 1, Microdrive, Zx p…
... /> Only internal voltage regulator 7805 i replaced by 3A switching regulator. I think ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... ).
[*] Replace 7805 with efficient switching regulator & minimize / remove cooling plate ...
