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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…
... voltage goes down to 2,5V. Because I doubted if ... voltage still drops to 2,5V.
I use this ... url]
Resistance between pin 1 of IC6 and the modulator ... IC6 to mdulator is approx 1,5kOhm, but anyway I' ... supply voltage drops to 2,5V.
If I understand ... -
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…
... diagram of the +12V and -5V power supplies, and page 20 ... talks about an extra 5V power supply.
There ... power supplies were rated 9V 1.2A, so I would've ... -
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…
... diagram of the +12V and -5V power supplies, and page 20 ... talks about an extra 5V power supply.[/QUOTE]
Thanks ... power supplies were rated 9V 1.2A, so I would've ... -
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…
... a simple interface:
1.
An H-bridge for ... mix (and the Speccy's 5v rail is quite noisy too ... -
The much rumoured Pandora is finally being built !!!!!!!20 years late though. Its from the people who made the GP32, GP2X. Its a hand held similar in size to a DS. [IMG]http://pandora.bluwiki.com/images/…
... at full power, which drags battery-life down even further (and ... - I'm still on 2.1.1, they really ballsed it up ... -
Works on Amiga but not SpectrumHi, I can connect my Amiga composite out to a PSOne LCD screen and all works fine. But does not work on the speccy. I'm using exactly the same lead. …
... />
Pin Name Description
1 Gmd Ground
2 Rt ... /> 9 B Blue
10 +5v +5 Volt
11 R ... -
I've just bought a cheap PS2Well there we have it I've finally bought a PS2, after all I've only wanted one for about 5 years. Anyway couldn't get any Silent Hill games, so I bo…
... .
It requires 8.5V at 5 Milliamps, however the ... can do is 9v at 1 Milliamp.
Is it ... -
I've just bought a cheap PS2Well there we have it I've finally bought a PS2, after all I've only wanted one for about 5 years. Anyway couldn't get any Silent Hill games, so I bo…
... .
It requires 8.5V at 5 Milliamps, however the ... can do is 9v at 1 Milliamp.
It is ... -
I've just bought a cheap PS2Well there we have it I've finally bought a PS2, after all I've only wanted one for about 5 years. Anyway couldn't get any Silent Hill games, so I bo…
... /> [/quote]
The XBox (1, don't know about the ... around), but it saves on battery life and also wear and ... -
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", …
... problem with a faulty Interface 1: with a M1 faulty machine ... , that Interface 1 allows the computer to boot ... to ground or shorted to +5V line. I can't remember ... -
New DS announcedIt's called a DSi [url]http://www.eurogamer.net/article.php?article_id=249483[/url] this is how it compares with the current DS lite... Nintendo'…
... cameras are VGA resolution, the battery life is reduced and of ... the EZ-5 3-in-1 (which provides the ability to ... my DSLite+R4+3-in-1 :-)
D ... -
Playstation vs. N64 vs. SaturnIn another thread ( [URL]http://www.worldofspectrum.org/forums/showthread.php?t=20482&highlight=xbox+360[/URL] ) we discussed the virtues and quali…
... as a fan of 1 on 1 fighters at the time ... Fighter Alpha series (well 1 and 2 anyway, 3 ... what suffered Virtua fighter 1 and 2 although cack ... converter/memory expansion the lithium battery has probably died and ... some multiplayer on Tony Hawks 1 and 2, and some ... -
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?
... from the board. A single +5V power supply, and a good ... count on this board. The -5V wasn't used anymore, so ... components less, and just over 1/3 of normal energy consumption ... -
Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…
... at least one resistor (about 1 kOhm)from PIN 16 to ... gnd or to +5V - check what works better.
Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…
... additional resistor to GND or +5V. And then try to connect ... a 1 kOhm (or lower till 220 ... Ohm) to GND or to +5V to see what happens.
Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…
... additional resistor to GND or +5V. And then try to connect ... a 1 kOhm (or lower till 220 ... Ohm) to GND or to +5V to see what happens.
1 Kohm resistor to ground or to +5V since this ...Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…
... install a 1 Kohm resistor to ground or to +5V since this ... ).
The 1 kOhm resistor to 5V or GND could help ...Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…
... /kempston_mouse_turbo_interface/canon9.gif[/img]
1- UP
2- DOWN
6- FIRE 1
7- +5V
8- GND
original DIVIDE and RESIDOSExist external interface with MB02 memory (512kB-1MB) memory. It's possible connect to ZX Spectrum before DIVIDE interface and used MB02 versions of …
... - up to 1MB memory)
BATTERY
TRANSISTOR(for disable ROMCS ... periphery disabled(set to log.1 = next interfaces can't detect ...Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…
... avoid loading current into lithium battery to avoid leakage of that ... battery.
Do you really generate -5V only for ...Console wars - does the least powerful machine usually win?In the console and handheld wars, does the least powerful machine usually win? I mean, for example, in the [I]XBox vs. Playstation 2 vs. Gamecube[/I]…
... possibly the most important factor, battery life, the gameboy ate much ... ) than 6 that last about 1 hour. Another point the add ...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 …
... 90% efficiency, 6-30V Input, 5V 1.5A output. It is pin ...ZXCF conundrumsBefore I start spending time prodding my ZXCF, I ought to ask... Anyone else have problems with the ZXCF losing its memory between power cycles? I'v…
Don't own a ZXCF, but the only diagram at hand (v.1.2) says there is
also 1K in series with battery and diode.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…
... a 120v to 9v DC 1.5A power supply (for specs ... /> btw, why wouldn't a 5v power supply work (since the ... spectrum basically uses 5v coming out of the VR ...DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... with +3 allram mode:
1) Power-on your ZX128+2A ... /> 3) active allram mode (key 1 + enter)
4) connect both ... signals on ZX bus to +5V (disable rom)
If ...Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…
... consumption would have been 5V 350mA, allowing battery.
This project was ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... 2 Spectrums with Interface 1 connected or is my ... />
a) The internal +5V regulator is a simple, robust ...
Some suggestions:
1) Replace external brick with a ... 3) Drastical: hook up regulated +5V directly to Spectrum internals (through ...Issue 2 Spectrum overheating keyboard membraneI think I have an issue 2 ZX Spectrum. I don't want to take it apart again as I had problems replacing the keyboard membrane. With Interface 1 conne…
... ]3) Drastical: hook up regulated +5V directly to Spectrum internals (through ... the input by 0.7-1.4v or so, in order ...Using a Spectrum in JapanHi all, at the moment I have a 48k Spectrum on its way (with a LOT of other stuff) to Japan where I intend to use it. So I have some fairly straight…
... here, i.e. 9V at 1.4A unregulated?
[/QUOTE]
1.4A supply that usually comes ... a [I]regulated[/I] 7.5V supply would be perfect. If ...
