-
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 …
... ]
Retroleum offers a MuRata switch mode regulators specified as being OK ... can have problems with Switch mode regulators . Even switch mode power supplies are mentioned ... 6 are similar in that switch mode regulators can be applied , ... -
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…
... . Ended up fitting 1.5a MuRata switch mode regulators in both the 48k ... got a 2a Traco Power switch mode regulator.
Power wise ... -
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…
... TSR 2-2450 5v 2a switch mode regulator in order to reduce ... lower-rated, such as a MuRata OKI-78SR-5 5v 1 ... TSR 1-2450 5v 1a switch mode regulator. Similarly, I also need ... the 48K should get a MuRata, or if the 1a Traco ... -
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 …
MuRata : an anither switch mode option:-
This is ... to choose between them ? The MuRata one offers short circuit protection ... -
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…
... lower-rated, such as a MuRata OKI-78SR-5 5v 1 ... TSR 1-2450 5v 1a switch mode regulator. Similarly, I also need ... the 48K should get a MuRata, or if the 1a Traco ... -
What % of WOSSERS use "old school" tape loading when playing their Speccy games.My guess is .000000001% ( but I might be slightly out on this! ) Do people still enjoy doing it "the old way"?
... by Recom, Traco Power, or MuRata.
[url=https://www ... been made aware of the MuRata types as well. [url= ... .co.uk/results.php?q=MuRata]Retroleum sells them[/url].
These mini DC/DC switch mode converters have efficiencies that are ... -
Need help on a PSUI want one of these to go with a speccy 48: [url]http://cgi.ebay.co.uk/NEW-ZX-SPECTRUM-POWER-SUPPLY-PSU-16K-48K-SINCLAIR-/170630125650?pt=UK_VintageC…
...
MODERN ENERGY EFFICIENT SWITCH MODE DESIGN
SUPPLIES 1500MA ... -
Power consumption improvementsHi all, Having just received lower and upper RAM replacement modules from Zorn, I thought I'd perform some current draw measurements to see how much…
... :
Standard: 570mA
Switch mode: 310mA
So immediately ... changing the regulator for a switch mode type. Next the RAM:
Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... . Inevitably this means the little switch mode supply on the 48K board ...So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... any model-specific code to switch mode
I hope someone ...Another Spectrum is brought back to life.Hi Spec-chums. I have been having bit of busy afternoon with repairs today. I've brought back to life a Panasonic Super-VHS recorder, and more intere…
... seller had fitted a replacement switch-mode Traco regulator, so that was ...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…
This 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 lump" power supply (excluding the later Amstrad "black" Spectrums which have different power supply ...Modifying a speccy to +5v only operation.Just a thought experiment so far. Let's say i wanted to make a more resilient spectrum by getting rid of the DC-DC converter circuit. This would remo…
... fit a Traco 5v 7805 switch mode replacement, i guess i could ...Light-weight "Rainy Day" ZX Spectrum Holiday KitSir Clive must have thought about it way back when he came up with the idea of a miniature TV . So where are we now this idea idea ? Here I will ass…
... .
4) Light-weight "switch mode" power supplies for the ZX ...Powering a SpectrumNow I've got my DivIDE up and running (and it's totally brillant, I encourage [B]everyone[/B] to get one), can I use the power supply from an old PC …
... to replace it with a switch-mode regulator which wouldn't suffer ...Election of the new maintainer of the TZX formatHi folks, the topic says all, let the discussion begin :) Luca
... to select the most comon mode that the TZX could be ... to read this block and switch mode accordingly. I don't think ...Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... /> You have to design a switch-mode PSU that runs on a ... voltage needed.
A switch-mode PSU is more efficient, and ...toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... 'weird' voltages (+12v) is a switch mode power supply, which gets regulated ... into the oscillator.
Switch mode supplies are pretty good at ...TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... more expect with the little switch mode supply than the 7805, but ...Mysteries of Electricity QuizA little fun quiz that I know the answers to, but may lead to some head scratching and disbelief, but there's easy experiments than can be performed …
... I've managed to make switch mode power supplies and I've ...On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... , the rest by a small switch mode power supply.On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... electrolytics in the Speccy's switch mode power supply - it's probably ...Problems with TS2068sI bought 2 TS2068s, and this is what's happening: 1st computer: -The tv output doesn't work. The composite video output does* -The '7' key is dead.…
If the Timex uses 4116 RAM, it probably has a little switch mode power supply to generate the -5v/+12v supply to the memory. It's probably the coil making that noise. The Speccy does that too.48K Speccy not workingHey, A few months ago (hope it´s not to late) I was loading a game into my speccy and from one moment to another it stopped working! I unplugge…
... an outside chance the internal switch mode PSU isn't generating power ...Problems with TS2068sI bought 2 TS2068s, and this is what's happening: 1st computer: -The tv output doesn't work. The composite video output does* -The '7' key is dead.…
... , it probably has a little switch mode power supply to generate the ...Voltage SchmoltageOk then. Don't flame for wanting to use a C64 tape deck for this - it was the only one I have to hand which may be cannibalised for the purpose. So …
If you're powering it from the PC, probably the easiest way of getting that 6 volts is to use an adjustable linear regulator off the PC's 12v. If you want to be efficient, you'll use a switch mode supply instead :-)ZX81 power supplyFriend gives me ZX81 without power supply and i want to test whether he work or not. Can i use Spectrum p.supply for that purposes? I dont want to d…
... should be, and the small switch mode regulator in the expansion may ...ZX81 power supplyFriend gives me ZX81 without power supply and i want to test whether he work or not. Can i use Spectrum p.supply for that purposes? I dont want to d…
... , and then use an internal switch-mode psu that deals with the ...
