World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.003s
<1…14151617181920…34>
  • True Spectrum laptop (no emulation)[url]http://user.tninet.se/~vjz762w/[/url] Hi All, I have build a speccy laptop, battery part is not ready yet.... I did it on 2 days, I will put s…

    ... will have an efficient 9-12v to 5v regulation from the ... 3.3v (instead of 9-12v to 3.3v).[/QUOTE]
    csmith csmith May 2008 Hardware
  • connecting 3" flopy disk drive to PClooking at this image: [IMG]http://www.fileden.com/files/2006/9/12/214909/Amiga/3inchFDD_figure.png[/IMG] why are pins 2,4,6 and 14 coneccted to +5V…

    you didn't forget to swap +5V and +12V, right?
    otherwise it would kill most of electronics on 3" FDD.
    I once did that on Amiga A590, but luckily only two DRAM chips were fried.
    orange orange May 2008 Hardware
  • 48K specs boots, but THEN blinking blocks!Of all ZX problems I have seen, the 'blinking blocks' is the most common... Today I picked up a 48K, it boots and THEN it locks filling the screen wi…

    ... circuit outputs (+5v, -5v and +12v).

    I had a ...
    csmith csmith May 2008 Hardware
  • broken ZX 48K, help neededI have a broken down ZX 48K :cry: The keyboard membrane is almost completely destroyed, and this is what screen shows on power-on: [IMG]http://www.h…

    ... sure the +5v, -5v and +12v is present in the right ...
    Winston Winston June 2008 Hardware
  • 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…

    ... chips (for the -5v and +12v lines). I suspect the video ... sound change, since they consume +12v.
    Winston Winston June 2008 Emulators
  • Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…

    ... . It doesn't have the -12V (needed for RS232 comm) but ... it has the +5V and +12V, enough to power a +2A ...
    zxbruno zxbruno June 2008 Hardware
  • Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…

    ... a circuit diagram of the +12V and -5V power supplies, and ... .

    There is no -12V on 48K Spectrums. It was ... is in fact an unregulated +12V supply from the collector of ...
    Jimmy Jimmy June 2008 Hardware
  • Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…

    ... a circuit diagram of the +12V and -5V power supplies, and ... an adjustable power supply upto 12V and 10A. So obviously it ...
    65C02 65C02 June 2008 Hardware
  • Is it possible to use external power supply for +-12; +-5 for ZX SpectrumRecently I acquired a damaged Sinclair ZX Spectrum, issue 3B. According to the maintenance manual I have to replace TR4 and TR5. These type of transi…

    ... disconnecting T2 of IC7 the 12V was very low, and total ...
    65C02 65C02 June 2008 Hardware
  • I/O on the Speccy - ideas/help wanted!I'd like an interface for the Spectrum that can control and monitor other items. I have a task in mind that would require: A: 4xbinary inputs (as in…

    ... the ADC, good decoupling (good quality low ESR decoupling capacitors) on its ...
    Winston Winston July 2008 Hardware
  • PSU queryHi all, just one quick question. Are Spectrum PSU's compatible with ZX81's? I've just bought an '81 off of Ebay, which was sold as "working, but the …

    ... the 5V supply to make 12V and -5V, in a similar ...
    Phu Phu July 2008 Hardware
  • Retro... anythingI suppose this question can be used in relation to Speccies, or C64s, Atari 2600s or any old computer. But it got me thinking after watching some of …

    ... in Sept has radials, and 12v electrics, and beefed up brakes ...
    thx1138 thx1138 July 2008 Chit chat
  • Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …

    ... is giving the correct 5V / 12V levels? (To confirm PSU is ...
    Jimmy Jimmy July 2008 Hardware
  • +3 compositve video out problemToday, I've tried to put a composite video out in my +3. I've built the circuit proposed [url=http://www.secarica.ro/html/plus3_hardware.html#composi…

    ... pin 6 in TEA2000).
    - +12v soldered to pin 14 in ... />
    Don't connect the +12V from MC1488 but from TEA2000 ...
    Gods Gods August 2008 Hardware
  • +3 compositve video out problemToday, I've tried to put a composite video out in my +3. I've built the circuit proposed [url=http://www.secarica.ro/html/plus3_hardware.html#composi…

    There is a component (L3, excuse me, I don't know how to say "bobina" in english) between +12v and pin 11... would it be a issue?
    Zup Zup August 2008 Hardware
  • +3 compositve video out problemToday, I've tried to put a composite video out in my +3. I've built the circuit proposed [url=http://www.secarica.ro/html/plus3_hardware.html#composi…

    ... say "bobina" in english) between +12v and pin 11... would it ... "clean" the "analog +12V" form the "digital +12V".
    The video signal ...
    Gods Gods August 2008 Hardware
  • Build your own Pentagon 1024SLAlexey aka KingOfEvil was so kind to give me an english manual for the Pentagon with most (except for the floppy controller) chips adapted to "wester…

    ... little more wrong with the 12V supply and one of the ... explain the problem with the 12V power supply. But we're ...
    Shockwav3 Shockwav3 September 2008 Hardware
  • Sinclair PC 200 - RF questionIs there any compatibility regarding the RF output of the sinclair pc 200? This week i got my 2nd unit and in both of them, when connected through R…

    Check DC voltage at C911 (about 12V), check voltage at Pin3 of IC909 (5V).
    Try to add about 100?F to C911. Use an AC voltmeter and measure at C909. You should measure not more than some mV (
    ingo ingo September 2008 Hardware
  • Z80 ApplicationsI never realised how widely in use the humble Z80 processor was in early Arcade games (Galaga had 3 running in Parallel), Fax Machines, Photocopiers,…

    ... its contemporaries required -5v and +12v rails), and integrated DRAM refresh ...
    Winston Winston September 2008 Hardware
  • Sinclair PC 200 - RF questionIs there any compatibility regarding the RF output of the sinclair pc 200? This week i got my 2nd unit and in both of them, when connected through R…

    ... DC voltage at C911 (about 12V), check voltage at Pin3 of ...
    odious odious September 2008 Hardware
  • +2 grey PSU capacitor changeHi I opened up a +2 grey power supply (2.1A max output) unit in order to replace the aged electrolytic capacitor inside, just like I always do with …

    ... role too.

    All decoupling capacitors inside the Spectrum are ...
    roko roko November 2008 Hardware
  • RGB on 48KIs it possible to get better picture (RGB, or at least composite video) from ZX 48K without opening it? (using the expansion port only) I think there…

    ... inbound, but it provided the 12V output on the central pin ...
    Womble Womble November 2008 Hardware
  • Video Capture Cards?Well, looks my new speccys (a rubberkeyed 48 and a grey +2) don't want to play nice with my newish TV's tuner (or by connecting through my VCR, which…

    ... pin of the socket to +12V.

    I did this ...
    ingo ingo December 2008 Hardware
  • Ma20 Rgb InterfaceHello everyone , im a bit stumped on this one :) . Im wanting to convert the RGB lead to a scart connector. There was some info on the net regarding …

    ... explained how he fixed the 12v problem:

    [url]http ... %3D0+%22retro+repair+shack%22+12v+womble&hl=en& ...
    zxbruno zxbruno December 2008 Hardware
  • Ma20 Rgb InterfaceHello everyone , im a bit stumped on this one :) . Im wanting to convert the RGB lead to a scart connector. There was some info on the net regarding …

    ... explained how he fixed the 12v problem:

    [url]http ... %3D0+%22retro+repair+shack%22+12v+womble&hl=en& ...
    flumpey flumpey December 2008 Hardware
  • 4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?

    ... generate it, could go. The +12V was still used, but only ...
    RetroTechie RetroTechie December 2008 Hardware
  • 128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …

    ... , and the input supply is 12V, you're still taking 1A ... on the 12V side. The power turned to ... 1A at 5V, on the 12V input side, they tend to ...
    Winston Winston January 2009 Hardware
  • 128k heat sink - ULA problems and a hintHello, I had two ZX Spectrum 128k with a similar behaviour. One item worked only a short time after switching on and then there were increasing RAM …

    ... , and the input supply is 12V, you're still taking 1A ... on the 12V side. The power turned to ... 1A at 5V, on the 12V input side, they tend to ...
    BloodBaz BloodBaz January 2009 Hardware
  • R.I.P. spectrum 48kRecently one of my 48k rubber key (issue 4) machine bit the dust the other day when I tried to power it on. When powering it on, it gave a weird 'bee…

    ... Spectrum also generated -5V and +12V ( or something like that ). These ...
    bladerunner bladerunner February 2009 Hardware
  • R.I.P. spectrum 48kRecently one of my 48k rubber key (issue 4) machine bit the dust the other day when I tried to power it on. When powering it on, it gave a weird 'bee…

    ... Spectrum also generated -5V and +12V ( or something like that ). These ...
    DEATH DEATH February 2009 Hardware
<1…14151617181920…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
decoupling 171 209
12v 1.9K 3.2K

Related Threads

  • +12v/-12v/9v and peripherals?Do any peripherals use the +12v, -12v or 9v lines exposed at the edge connector?<br /> <br /> Firstly, if they use +9v they won't work on a +3, since…
  • 12V -> 9VI found this simple dc-dc converter:<br /> [url]http://www.mcrent.com/workbench/dcdc1216/[/url]<br /> it converts 12V to 16V, can it be used to produ…
  • Spectrum +2 grey 12v railHello everyone,<br /> <br /> I have this grey +2 with no video from tv. After much reading and testing i realized it was the internal power supply. A…
  • 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 :(<br /> <br /> I do however have a 12v 2amp PSU, if I reverse the p…
  • 12V Rail - Spectrum 48kOkay - I may just be having a senior moment here, but I'm running out of ideas.<br /> <br /> I'm working on a Spectrum Issue 4S board,and have had …
  • 12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
  • Harlequin Rev G - Decoupling Capacitors?Guys - I started assembling my Rev G Harlequin board over the weekend. Right after I picked it up and started loading parts, it struck me that there…
  • ZX Spectrum Issue 2 - 12V badHey there,<br /> I'm currently attempting to fix a ZX Spectrum issue 2 that I recieved. <br /> Overall the machine was generally working when I rec…
  • 12V missing on an issue 3I’ve been working on an issue 3 Spectrum +. It shows thin distorted vertical stripes on bootup. +5 and -5V are all right but the 12V line measures ro…
  • zx spectrum +2A power supply missing -12v voltshey.. i'm looing at a zx spectrum +2A power supply that the -12v rail seems to be missing .. it has the 12 volts and 5 volts .. it is the version wit…

Related Searches

  • datacorder 12v
  • toastrack 12v tr
  • toastrack 12v tr4
  • missing 12v
  • 12v
  • low resistance 12v
  • 12v coil
  • harlequin 12v
  • toastrack 12v
  • 12v 22v
  • 12v high
  • 12v problem
  • decoupling
  • 12v ripple
  • 12v noise
  • 12v ac
  • 12v ma
  • 12v mv
  • 12v power supply
  • 12v power supply 48k

Copyright © 2024 World of Spectrum