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Using a Euro Sinclair PSU in UKI've got a EURO1400 PSU with a Euro plug. Am I right in thinking I can just cut the pug off and change it to a UK plug, and it will work fine? The on…
... be higher (typically between 10.5V to 12V).
[I][B ... -
IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
... reliable. 3.3v chips with 5v tolerant I/Os generally are ... seem to be TTL compatible. 5V XC9500 series are not TTL ... the I/Os configured in 5v mode but may well be ... power circuitry (supplied with +5V, -5V and +12V from a PC PSU), just ... -
+3 Drive is it broken ?I have given the +3 disk drive a clean and a belt change and yet it does not work. I put a disc into the drive and nothing happens. Nothing in side m…
... 's a fuse on the 12V line used by the motor ... be one near the +5V and the +12V pins of the power ... -
48k Missing D15Got a 48k here that is missing D15 (just below right molex connector), someone removed it in the past, only just noticed it was gone after replacing …
... an integral part of the -5v/12v generation, so I would expect ... -
48k Missing D15Got a 48k here that is missing D15 (just below right molex connector), someone removed it in the past, only just noticed it was gone after replacing …
A missing missing D15 would knock out just the +12V supply. The +12V supply feeds ... -
external drive +3I recently bought an external drive kit for my +3 [url]http://www.ebay.co.uk/itm/111267120287?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649[/ur…
... , which has all the voltages (+5V, +12V).
Care should be ... -
+2 Grey video issueSo far ive replaced TR4, TR5 (and correctly orientated them) and seperated the audio from the video, still I have this; [youtube]mZZWOXRs_Zk[/youtube…
... that a failure of the +12v supply would result in a ... kind of picture even if +12v is missing. This is why I ... -
+2 Grey video issueSo far ive replaced TR4, TR5 (and correctly orientated them) and seperated the audio from the video, still I have this; [youtube]mZZWOXRs_Zk[/youtube…
... that a failure of the +12v supply would result in a ... of picture even if +12v is missing.[/QUOTE]I think this very ... />
The loss of the +12V supply kills the composite video ... -
PSU Overvoltage?Going through a pile of 48k PSU's today, rewiring and fitting new plugs, testing each one as I go I came across one that outputs 14.85v, usually im g…
I normally use some 12V 5W light bulbs for load ... should be between 10.5V and 11.5V appropriately.
As ... if the "9V" input is 12V or greater and sometimes too ... between the transformer and the +12V line) can handle a higher ... -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
... between the 5v logic signals the AY uses and the +/- 12v signals ... -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
... AUX lines, provided I use +12v to drive them.
- Even ... are at either -12V or +12V. The inputs accept -12V to +12V, but an ... same as an input of -12V. Also a +3V will read ... same as +12V. So you can connect a 5V TTL logic output ... -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
I as thinking about a director connection between AUX l?nes and a centronics port. Wouldn't get I a fried port after connecting a +12v output to a +5v input? -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
... after connecting a +12v output to a +5v input?[/QUOTE]
It ... -
Grey +2 DiedHi all, Thrashing my +2 playing Mugsy last night and it did this... [URL="https://m.flickr.com/photos/83515822@N05/13012551693/lightbox/"]https://m…
... video display means that the +12v generation is working.
5v to work.
A ... -
Spectrum+ Issue 3b customization and repairHi everybody, I've got a Spectrum+ that shows exausted electrolytics capacitors issues such as poor colors on the screen and speaker noises. I was go…
... /> I've managed to get -5v working on it but no ... -
Another "untested" dead spectrum...Hi, I'm looking for some suggestions on a faulty Spectrum I have picked up. I'll need to wait until tomorrow before posting pics, but the screen is …
... DRAM chips, or the +12V and -5V supply circuits. Replace the electrolytic ... always changes to white, the +5V supply, the Z80 CPU and ... -
12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…
...
Your 12V 2A PSU should be fine ... it is greater than 10.5V and if you can ... k a ____ k
+12V from PSU ---[___|]-----[___|]-----[___ ... if the PSU output is 12V or greater or use two ... is greater than 10.5V but less than 12V. Three diodes will ... -
12v in a Spectrum +2My Speccy 128 +2 requires a 9v 2.1a PSU, all my 9v PSU's are much below 2.1 amps :( I do however have a 12v 2amp PSU, if I reverse the polarity so t…
... ]Hello
Your 12V 2A PSU should be fine ... it is greater than 10.5V and if you can ... k a ____ k
+12V from PSU ---[___|]-----[___|]-----[___ ... if the PSU output is 12V or greater or use ... is greater than 10.5V but less than 12V. Three diodes will ... -
Beta Disk MicroP 3.5 Disk Drive DIN Connectors signalsHello, I own a Beta Disk with an 3,5" Disk Drive from MP (MicroP) which has two DIN Connectors. One is a DIN Connector with 5 Pins, the other a DI…
... . Red cable is +5v, yellow cable is +12v and black cable is ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... ) needs to convert this to 5v regulated. The regulator will need ... to use 9v instead of 12v if available.
Just ... voltages ranging from +9 to +12v.
B -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... is relatively constant. So using 12V is save in any case ... use a divide using a 12V / 1A supply should be ok ... 100mA at 12V (means about 12/5*100=240mA at 5V - a ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... .
If you only put 5v on the selected joystick port ... buffer chip unless I'm missing something. -
Weird output...Last week I found my old ZX Spectrum 48k and I tried to connect it to my tv... After tuning it (at 583MHz - C35, it's the only one with signal) it s…
... ) has died, so the +12V and -5V DC supplies are not being ... -
Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... ?
Did you measure the 5V at any of the ICs ... the power plug connector is ~12V (the PSU is standard ZX ... and 14 on 74HC00 is 5V (4,99 exactly)
- none ... -
Spectrum +2 (Grey version) RGB SCART QuestionHi Guys, A quick question for you. As the new owner of a 128K Spectrum +2 (grey version), I'm using a cable from Retro Computer Shack which tries to…
... from the serial interface was 12v which to get down to ... involved with 12v when there's a lovely clean 5v available from ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... be taken from the 12V line or the 5V line of the ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... be taken from the 12V line or the 5V line of the ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
I just tried the 2.5V solution by a voltage divider ... on 12V safely, and there is no output port offering 5V.
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... solve this by taking a 5v feed off the internal regulator ... change the links to offer 12v through pin 5 but leave ... you're going from a 12V source for example there's ...eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... ]I just tried the 2.5V solution by a voltage divider ... current is 40mA. For 1.5V into 75 ohms means the ... is that it uses the +12V from the Spectrum expansion bus ...
