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Alternative power supply for a +2B?Hi friends, On impulse, I recently bought a ZX Spectrum +2 (unit only, untested) on eBay, thinking that the cables (specifically the power supply) o…
How can you have a -ve voltage? The notion confuses me, electricity is energy so negative energy? -
Alternative power supply for a +2B?Hi friends, On impulse, I recently bought a ZX Spectrum +2 (unit only, untested) on eBay, thinking that the cables (specifically the power supply) o…
... RGB monitor, the "RGB switch" voltage is not needed. -
faulty zxspectrum +hi all i just bought a speccy 48k+ off ebay it worked for like 15 mins now it is stuck on the reset screen. I fear this is something major maybe fau…
... piece. Am gonna get a voltage tester from Maplins at the ... -
PC freezes during first 10 minutesStarting about a week ago, my PC (Windows XP) randomly completely freezes in the first few minutes after I've turned it on. I bought it near the end …
... to error via static or voltage jumps). Run the memory tester ... -
Alternative power supply for a +2B?Hi friends, On impulse, I recently bought a ZX Spectrum +2 (unit only, untested) on eBay, thinking that the cables (specifically the power supply) o…
... can you have a -ve voltage? The notion confuses me, ... negative energy?[/QUOTE]
Voltage != electricity != energy (!= means "is ... have a current, but no voltage differential. :-o
... have a current AND a voltage differential at the same ... -
Diagnosing Spectrum 48k (faulty RAM chip?)I have a Spectrum 48k (I believe it may be an upgraded 16k model) that doesn't work, and never has ever since the owner gave it to me. When you turn …
... is the threshold voltage. This is the minimum voltage needed to get ... diode conducting, and (thus) the voltage that a diode 'takes away ... -
8 Bit MusicThis is an old article, and you guys may have already have had this topic, but here's an article on New Scientist about music created with 8 bit mach…
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you would like High voltage Sid Collection.. perhaps.
but ... -
Power supply questionHi all, my 48k power supply has suddenly started getting very noisy, and I'm getting worried in case it blows up my favourite Speccy. I'm on the look…
Yes you can use your +2 grey PSU no problem. The amps of a PSU is not a fixed level value like the voltage. Is the maximum that the PSU can supply.You can keep using the +2 PSU for as long as you like, its ok. -
Power supply questionHi all, my 48k power supply has suddenly started getting very noisy, and I'm getting worried in case it blows up my favourite Speccy. I'm on the look…
... of 50Hz (or 60Hz) input voltage and magnetostriction, IIRC.
I ... -
Power supply questionHi all, my 48k power supply has suddenly started getting very noisy, and I'm getting worried in case it blows up my favourite Speccy. I'm on the look…
... of 50Hz (or 60Hz) input voltage and magnetostriction, IIRC.
I ... -
the whole known universe in 6 minutes[url]http://www.youtube.com/watch?v=17jymDn0W6U[/url] Quote:The Known Universe takes viewers from the Himalayas through our atmosphere and the inky …
... to a battery of sufficient voltage. Et Voila. Tanned feet ... -
the whole known universe in 6 minutes[url]http://www.youtube.com/watch?v=17jymDn0W6U[/url] Quote:The Known Universe takes viewers from the Himalayas through our atmosphere and the inky …
... to a battery of sufficient voltage. Et Voila. Tanned feet.[/QUOTE ... -
ZX81 more powerful than the Speccy?I have been reading ?The ZX Spectrum Book 1982 - 199x? by Andrew Rollings (thanks again, Andrew - it?s a great read!). There are some comments in the…
memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …
... though, it worth checking your voltage levels for the 4116 IC ...Spectrum Video Circuitry.Wotcha, I've looking at the circuit diagram of the speccy video circuitry (Hey, I'm snowed in, and theres only so much Civ IV i can stand :p), and I…
... like some sort of reference voltage. I measured it on one ... guess it's just a voltage that needs some external filter ...Spectrum Video Circuitry.Wotcha, I've looking at the circuit diagram of the speccy video circuitry (Hey, I'm snowed in, and theres only so much Civ IV i can stand :p), and I…
[QUOTE=spodula;414673]Also, whats the purpose of VCC2 from the ULA?[/QUOTE]
Vcc2 power the analogue parts inside the ULA (video and tape sections). R34 and C30 are voltage decoupling components.If I want to create a power supplywell, I'm doing a fair bit of travelling with my leads and wires and computers and speakers and stuff,so I thought of making a little device out of a…
... need to make sure the voltage is correct.
+5V ...Spectrum 48k run timesHow long should you expect to have your 48k turned on for? I know they get really hot so whats the max amount of time you can leave it on for? Thank…
... a heat sink is the voltage regulator, this does get hot ...Spectrum 48k - Many ProblemsHi, I'm new to the boards and to owning a Spectrum, and sadly, it doesn't work properly. I'd been using an emulator for a while but I decided I'd lik…
... this forum for "4116" and "voltage". There will be posts linking ...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…
... feedback to regulate the output voltage as the demand for power ...+3 RGB to SCART cableToday i decided to make a cable of this sort by myself. I found the schematics here [url]http://falvarezold.dyndns.org/videojuegos/doc/cable_rgb_euro…
... pins require a specific DC voltage in order to signal "I ...Which ZX Spectrum setup?I'm building a semi-pro laser setup, with.. a ZX Spectrum as controller! [url]http://gathering.tweakers.net/forum/list_messages/1297705[/url] (I'm no…
... with a positive and negative voltage, so I can alter the ... schematic to two voltage outputs: one from 0..-2 ...Which ZX Spectrum setup?I'm building a semi-pro laser setup, with.. a ZX Spectrum as controller! [url]http://gathering.tweakers.net/forum/list_messages/1297705[/url] (I'm no…
... now have a nice analog voltage between 0 and 2.48V ...Looking for some 48k RAM (upper 32k bank)Greetings, I was wondering where I could find some upper RAM for a 48k (issue 4A). It's the Texas Instruments TMS4532-20NL4 P8419 (or any compatib…
... have to generate the sustrate voltage some way, so the internal ... voltage generator might fail (it's ...ZX Spectrum Power SupplyHi All, I've come across a power supply that is currently registering 14.5v before it is plugged into the Speccy. I have another one that registers…
... about 8V), the Speccy's voltage regulator can't maintain +5V ... ]measure[/I] 9V (average), but voltage actually varies between 7.5 ... />
The Speccy's internal voltage regulator can take [I]much ... only relevant number is the voltage [I]under load[/I] (read ...ZX Spectrum Power SupplyHi All, I've come across a power supply that is currently registering 14.5v before it is plugged into the Speccy. I have another one that registers…
... ticking over alternator puts horrendous voltage spikes in there), however, I ...Looking for a +3 power supply unitHi, folks! I'm looking for a +3 PSU, in good condition. I would be very grateful if anyone sells one and can send it to Spain for a nice price. Pl…
Just had another thought, I have no idea what voltage or plug type you have in Spain, I know a UK plug will not fit but the voltage from your main socket is the concern...
:)Looking for a +3 power supply unitHi, folks! I'm looking for a +3 PSU, in good condition. I would be very grateful if anyone sells one and can send it to Spain for a nice price. Pl…
... , I have no idea what voltage or plug type you have ... will not fit but the voltage from your main socket is ... />
:)[/QUOTE]
The voltage is the same as the ...Looking for a +3 power supply unitHi, folks! I'm looking for a +3 PSU, in good condition. I would be very grateful if anyone sells one and can send it to Spain for a nice price. Pl…
Ah OK. It was the voltage I was not sure about.
You can use an adaptor as you say or perhaps at a later stage replace the plug if it annoys you. :)PSU unit spectrum 128k +2b 6 pinout DINHello everybody! I have spectrum 128k +2B but I don't have the 6 pin PSU and I can't find it anywhere. Can you anyone tell me where can I buy this PS…
... current it can supply. The voltage is regulated, not the current ...
