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Spectrum coilFerrite bobbin, two coils wound on top of each other. Bottom coil is 15 turns, top coil is 36 turns. This is the coil found in the 48K spectrum. Ok…
... each other. Bottom coil is 15 turns, top coil is 36 turns ... . This is the coil found in the 48K spectrum ... /> Ok, I want build a coil to the same spec, using ... bobbins? The rest of the coil construction is simple, it's ... -
Microdrive using simple coilWhile listening to my iPod using cassette car adapter I came to idea - why not doing the same for the microdrive? Anyone ever tried that? Do you thin…
... ? Do you think a simple coil in the cartridge could do ... 120 kb/s and the coil would produce magnetic impulses to ... -
The rescue of a coil.The problem at hand was a known defect transformer from the switching convertor inside a Spectrum. Both windings are not interrupted and not intercon…
... How to identify a defect coil, as nothing special is ... self inductance, a good coil showed some 50 uH for ... winding of the defect coil showed just some 5 ... the outside of the coil is cooled at the air ... real test. Removing the coil from a working Spectrum took ... -
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 …
The purpose of the coil transformer, from what I gather ... -
128K Toastrack - Missing coil?Hiya! I recently acquired a fleabay 128K, and before putting power through it, I thought i'd open it up to see if anything looked obviously wrong (e…
... it was missing the massive coil that sits in the circle ... have one? Is it the coil I've read about that ... -
Issue with TV signal + Inductor Coil (16K Issue 2 Speccy)Hello guys, I just got a 16K Issue 2 Speccy from eBay. It was sold as not working so I knew there would be some work needed before it's working ag…
... to be with the inductor coil which gives me +9V on ... -
Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... ok. Both windings of the coil must be conducting, because otherwise ... shortcutted winding of the transformer (=Coil).
I know that people ... did. (I would have tried rewinding the 40 (3-4) and ... do a test with another Coil.
The electrolitic caps ... -
Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... ok. Both windings of the coil must be conducting, because otherwise ... shortcutted winding of the transformer (=Coil).
I know that people ... did. (I would have tried rewinding the 40 (3-4) and ... do a test with another Coil.
The electrolitic caps ... -
48k Issue 4A power supplyHi, I just repaired a 48k Spectrum+ with an Issue 4A board. The computer worked but the picture was mono with bad contrast and bad synchronizing. I …
Indeed the larger coil is at the 3-pin ... while dismantling the coil, there indeed is no reason to fear rewinding. -
Recognize any games by loading noise? :)Hi all, OK, a bit surreal question, but seems there are many around who were really into games, so how about any who can recognize some games just …
... heart where games started (the "rewinding" number on the cassette player ... -
+2 Loading from CD PlayerOn my +2 I have now got one of those CD > Tape Adapters. What I do is put the adapter into the +2 tape player and plug my CD-Walkman thing into that.…
... the games on the tape rewinding fast forwarding etc etc. With ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... promise anything, and if the coil's knackered then I can ... -
ZX-81 Ram Pack problemHi! I know this is a ZX Spectrum forum, but I am hoping someone here might be able to help me out... I have posted this to c.s.s. but noone was able…
... />
Hardware:
The coil and the power supply are ... -
Tape stopsHi, I'm trying to sample a tape, but it stops in the middle of the tape. I've tried it on 4 different players, and it stops on all of them. I've t…
... of them. I've tried rewinding/ffwding it multiple times, but ... -
48K power supply coilHi guys, been thinking about making a small quantity of PSU coils for the original 16/48K machines. My problem is, although I can (and have, with gr…
Hi guys, been thinking about making a small quantity of PSU coils for the original 16/48K machines. My problem is, although I can (and have, with great success) copy what is already there (ferrite core, wrap appropriate number of turns round it, terminate ... -
Noisy display faultI've been given an Issue 3 48K Speccy PCB which is in good working order except the main display area has slight changes of shade loosely following a…
... sound from the switching PSU coil).
In my experience ... is particularly severe. The PSU coil is quite loud on this ... -
Spectrum Spare parts neededI have a customer in Croatia purchasing some items from me, but to save on postage and currency conversion costs, can anyone supply the following ite…
48k one dead, one dodgyhello everyone. I have 2 48k spectrum +'s (the one with the QL case). Both boards have issue 3B on them near the speaker. The first will power up …
... like its coming from the coil. Is this one finished? I ...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 …
... /> A spark from a cars coil, through the leads from the ... coil to the spark plug. According ...BattlecarsI don't think this was ever a very popular game. But I really liked it back in the day. The only problem with it is that you have to do a lot of re…
... to do a lot of rewinding and reloading. I searched the ...My SurplusHere's a list of stuff that I plan to sell. Please let me know if you're interested in any of the items listed below. If you need pictures or more de…
... told it could be the coil.
Includes TV cable, AC ...Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…
... short circuit over the coil, which caused the coil and ferrite core ...HugsHere`s a thread for you Skarptacular :D [url]http://www.thesmokinggun.com/archive/years/2007/0606071borat1.html[/url] Borat being sued again by the…
... bit hilarious, had to keep rewinding it for another laugh :D ...48k idle soundis there an emulator that emulates the genuine 48k idle hiss/noise (or whatever it's called)? I mean the sound heard when there is no sound, but buz…
... the buzzer but some other coil emits that noise but anyway ...When I DieI wonder how many of us has thought what will become of our beloved collections when we finally slip off this-mortal-coil? It makes my blood run cold…
... finally slip off this-mortal-coil? It makes my blood run ...PAL-I to PAL-B on a grey +2Hello. A friend brought over a grey +2 from the UK. The tv sets over here are PAL B/G and i can't tune the sound because of the frequency of the sou…
... mention about tunning the sound coil(no mention to wich one ... 've tried messing with the coil with no luck and comparing ...issue 2 board c34 getting hotHi All, Can anyone help with c34 getting hot very quickly? I`ve got an issue 2 board, there is no `buzz` from coil. yet the spectrum initalises to co…
... , there is no `buzz` from coil. yet the spectrum initalises to ...Issue 3B problemHi! I have an issue 3B board that is having a strange problem: when I got it it didn't had the -5V and +12v, as usual. After replacing TR4 and TR5 t…
... machine seems to work, the coil buzzes but I have no ...Welcomes...and some technical stuffHello I`d like to welcome all ZX Fans. I`m rather ATARI 8bit geek - I got this grat machine when I was 14...20 yeras ago... There were few ZX in …
... explosion of tr4 transistor and coil failure, wouldnt be easier to ...ZX Spectrum + Revision b Power IssueHi all, I'm trying to repair a ZXSpectrum + revision 3b and at the moment the -5v is missing from the board. I've replaced the TR4 and will be soon…
... the TR5 and maybe the coil. I was wondering if anyone ...
