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Spectrum +2 power supply - voltages on each pin..?My +2 suddenly stopped working yesterday. It was working fine earlier in the day and now the power light will not go on, nor will the tape drive and …
... few parts I notice the voltages going across the connector to ... happen to know what the voltages should be coming from each ... -
ZX Spectrum Pre-regulator DesignCarrying on from the "[URL="http://www.worldofspectrum.org/forums/showthread.php?t=44486"]Issue 2 crashes after about 30 mins[/URL]" thread... [QUOT…
... ...... 1N5822 3A 40V Axial Schottky Rectifier e.g. Rapid 47-0826 ... load): 8V
The voltages varied slightly depending on which ... -
Pictures of 48k ZX Spectrums Showing the Important Voltages[SIZE=6][B]Pictures of 48k ZX Spectrums Showing the Important Voltages[/B][/SIZE] [URL="https://farm4.staticflickr.com/3841/15005543009_7bcf3b3031_o…
... ZX Spectrums Showing the Important Voltages[/B][/SIZE]
[URL ... -
New colour palette for 16K/48K/+ machines, based on ULA YUV voltagesI’ve made a colour palette for 16K/48K/+ machines, based on the YUV voltage tables in Chris Smith’s book The ZX Spectrum ULA. This colour palette …
... don’t have the YUV voltages in Chris Smith’s book ... -
Spectrum 48K / composite mod / LCD TV: voltages out of the ULAHello Spectrum World I have juste bought again my first computer on ebay... a Speccy 48k issue 2 with a 5C112E-2 ULA. Just had to replace TR4 and …
... ...". It doesn't match the voltages given in the great book ... -
General PSU repair guidesNot Speccy related. I'm just looking for a guide as such as to where to begin with a power supply repair. Realise this is a bit of an odd thing to as…
... between high an d low voltages) , tested from mains plug pins ... passing imitation of a bridge rectifier, I've checked they only ... up to see if any voltages are present here, as I ... of displays needed any odd voltages like a -5vdc , an ac ... -
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 …
... circuit that generates various internal voltages (+12V, -5V, etc.) So unfortunately ... 3 or 4 2A-rated rectifier diodes in series with the ... -
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…
... , it's only a bridge rectifier, and another one of my ... equipment, don't go sticking voltages in things :)
p ... -
Opus Discovery issues!All happens at once when things go wrong eh? This time its the dual drive Opus, neither drive will read/write, motor spins, when formatting you can …
... /connections the +5 and +12 voltages should be checked for correct ... .[/QUOTE]
Indeed, a rectifier in one of my Opus ... that one with a stronger rectifier (2A if I'm correct ... .
It was the rectifier closest to the center of ... -
(Re) building a ZX Spectrum laserharpThe Cambridge show is nearing, and I want to bring my laserharp with me. Why? Because it's built around a ZX Spectrum +2: [IMG]http://benophetintern…
... get the positive and negative voltages that float around zero, ... Again fairly easy: use a rectifier bridge, but use diodes that ... br />
Before feeding the rectifier, the signal is boosted with ... the incoming signal from the rectifier.
It should be ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... to be a half-wave rectifier, and so if it were ... speaker output during saving - the voltages are too low to bring ... -
Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…
... (which is a transformer, bridge rectifier and smoothing capacitor) was between ... .
As mains supply voltages do vary depending on where ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... ~
As these are 'effective' voltages this complies with my DC ... you explain?
The rectifier with bent legs is a ... -
Opus Discovery with a HarlequinHi all I am getting a Harlequin and the 128k toaster rack mod but I have an opus discovery and a spectrum +, the + is dead so going to use the cas…
looking at the schematics of the harlequin it as all the same voltages as the spectrum on the edge connector so this should work with out issues as the dc in goes through a 4 diode bridge rectifier and produces 9v -
+2a PSU adviceHi all, With my +2 being a bit of a diva I am thinking about getting my +2a recapped so I can use it for the odd game the +2 does not like, there …
... to be supplied with multiple voltages, hence the multi pin plug ... IC's to supply the voltages. They have fuses also for ... , and a simply diode bridge rectifier to convert ac to dc. -
voltagesAll the Spectrums use a 9V power supply, I think. But would you get away with using a transformer that only gives you 7V?
All the Spectrums use a 9V power supply, I think. But would you get away with using a transformer that only gives you 7V? -
+3 Power Supplyg'day everybody. sorry to be asking for help in my first post (i know it's a tad rude), but how "generic" is the +3 power supply? does it supply mult…
... supply? does it supply multiple voltages like the C64's power ... -
Can't tune into spectrumHi - I recently discovered an old ZX Spectrum in amongst a load of junk (it's the 48K version). Not sure whether it works yet because when I try to t…
... more thing: I checked the voltages on pins 1 and 9 ... -
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…
... OK. I have checked the voltages and they are all OK ... -
BA157 diodeUsed in Speccies, so not too off topic :P Right, it's a "fast recovery rectifier diode" - can anybody tell me what that means exactly? Fast recover…
... , it's a "fast recovery rectifier diode" - can anybody tell me ... -
Using a +3 power supply to power a CPC.Hi there, I'm going to try and power a CPC6128 using a +3 power supply. The +3 supplies 12V DC 0.2A and 5V DC 2A, the CPC6128 needs 12V DC 0.4A and …
... safer by adding a 1N5400 Rectifier Diode (3A) to the two ... -
Composite video mod on a 16K issue 2, not workingI carried out the composite video mod detailed here: [url]http://user.tninet.se/~vjz762w/fixuspec.html[/url] I chose the one that requires the trans…
... +5V lines by measuring the voltages with the meter before I ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... /> I used multimeter to read voltages, don't have an oscilloscope ... -
Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... 'll try to check all voltages on the ICs, but I ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... and feed in the right voltages to the socket, what is ... -
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 …
... the deck? it needs two voltages, +5 and +6. Copypasted from ... -
I want to build a new, super spectrum ;-)only kidding Andrew :-) my brain's going at a mile a minute at the moment, so I thought I should put some of the ideas down in case one of them is w…
... the power supply, making the voltages fluctuate and therefore killing the ... -
how to set voltage regulator to the correct setting ?On the power supply that is broken it says AC adapter INPUT : 230v 50Hz OUTPUT ; 9v 200mA Regulated On the variable voltage adapter i have the…
... sliding switch with various different voltages 3v, 4.5v, 6v, 7 ... -
Speccy 128 QuestionMainly for the experienced speccy resurecters around these parts. Have you ever had a Speccy 128 with a borked TEA2000 video chip? The reason I ask…
... so far tested that the voltages are all ok, and keyboard ... -
GP2X F200 QuestionsI should be receiving a GP2X F200 in the mail any day soon and was wondering if any of you have one. I wanted to get a power supply as well at some …
... that as long as the voltages are correct it may be ...
