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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…
... lower voltage and that the polarity needs to be reversed on ... />
This shows the correct polarity for a ZX Spectrum:
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…
... "no messin". (apart from the polarity of the barrel plug of ...Speccy Retro TypologyHow many types of Speccy Retro are there?
... changed to get the correct polarity . The main benefit is that ...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…
... to mess about with the polarity on the plug end of ...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…
... being able to test the polarity of a power supply "said ... -device-doesnt-specify-its-dc-polarity"]https://electronics.stackexchange.com/questions ... -device-doesnt-specify-its-dc-polarity[/url]
But most ...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…
... talking about working out what polarity a device requires if the ... a PSU, working out the polarity is simple (assuming it is ... you are sure on the polarity of the LED ;-)
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…
... one said to be negative polarity , rated at say 9 volts ...More on the Cheetah RampackI should be more careful about doing "repeats" ( I should learn some manners) but I could not find anything recent on these . But here is on WOS …
A side issue.
The remark by Gozzo (on the Sinclair ZXworld thread) about positive polarity intrigued me . Is this correct?More on the Cheetah RampackI should be more careful about doing "repeats" ( I should learn some manners) but I could not find anything recent on these . But here is on WOS …
... really does have centre positive polarity (unblievable) on the power supply ...Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …
... for this has POSITIVE CENTRE POLARITY ( ZX Spectrum is centre negative ...Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …
... for this has POSITIVE CENTRE POLARITY ( ZX Spectrum is centre negative ... or TS1000. So the different polarity is not normally a problem ... ) barrel connector, used the same polarity as the ZX Spectrum.
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 …
... and then turned around the polarity of one of my spare ...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…
My "really cheap" centre negative polarity Switch mode power supply arrived ... it appears to be negative polarity on centre pin.So the ... barrel plug to get the polarity set up correctly .Opinions on ...Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... doesn't care about the polarity of the signal. It can ...Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... of Spectrum tape loaders are polarity insensitive, that is they don ... [/i], I believe) that is polarity sensitive.
Tape loaders ...The Complete List Of The Causes Of Lower Ram Failure?Well the aim is to get a comprehensive list.I ask this because I know very little about it . I know that failure of "power supply" related capacitors…
... the use of the incorrect polarity DC input voltage,
[*] Damaged ...can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]
Or electrolytic capacitors connected up with the wrong polarity on a high voltage supply...!
[b][i]Mark[/i][/b]can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]
... connected up with the wrong polarity on a high voltage supply ...can anybody match my high tech testing bay ... [url="https://photos.app.goo.gl/PSsCJRDDCDVJV9158"]https://photos.app.goo.gl/PSsCJRDDCDVJV9158[/url]
... college, another student got the polarity wrong for a large electrolytic ...Ferrite beads in power cords?So I am seeing these modern psu units with ferrite beads on both ends, just like this: [url=https://imgbb.com/][img]https://i.ibb.co/PFQT4n1/9fd19…
... good price after switching the polarity of course ...Spreadsheet help (Excel numbers larger than 15 digits)Hi all, I have a problem with a spreadsheet not being able to give a result if there are more than 15 digits. Made a spreadsheet to add up the fib…
... , also joins + with - numbers, proving polarity sequence also in the 4x6 ...Spreadsheet help (Excel numbers larger than 15 digits)Hi all, I have a problem with a spreadsheet not being able to give a result if there are more than 15 digits. Made a spreadsheet to add up the fib…
... . The 4x6 grid shows the polarity of each number. A -4 ...Spectrum +2 noobie questionsHi! A few days ago I ordered a Spectrum +2 from ebay thanks to a friend and before it arrives, I wanna be sure I'm ready to use it, so I got a few qu…
... find exact info on what polarity the speccy takes[/quote]
polarity is correct. Hence you can ... be fine.
The polarity is positive (+) on the outside ... you buy has the incorrect polarity, you will have to cut ...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 …
... had merely switched round the polarity on its existing barrel plug ...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 …
... course , I double checked the polarity but it did not like ... wiring up problem , Irrespective of polarity there are 3 pins on ...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 …
... made up to the correct polarity either by 1) changing the ... polarity inside the case 2) By ... changing the polarity on the actual barrel plug ... wobbled) one with the correct polarity . This worked well enough initially ...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 …
... is to sort out the polarity first . Once the negative is ...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 …
... then on getting the negative polarity right .
So the ...Voltage/current meterToday I went to my local electronics shop and found this model of voltage and current meter, readily assembled with DC plugs at either ends... :P …
Mmmm but will the fuse actually blow at that ratting>?? 750ma would not be sufficient for a +2.. he he i thought it was just me that used PS2 supplies on spectrums * not forgetting the polarity*
