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Re: ZX Spectrum 48k


citat s weba:
I have recently acquired a ZX Spectrum 48K without a power supply. I
found out the original psu specs to be "9v dc, 1.4a, -ve, unregulated,
Almost any 9V unit will do that delivers around 1.5-2 amps. I'd be careful
with cheap switching supplies (especially if they are not properly
shielded using capacitors etc.), as they could create some nasty spikes
and surges your Speccy might not be prepared to digest.
izvor:
https://groups.google.com/forum /#!topic/comp.sys.sinclair/yWNpi9FhR8w
--
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
We've slightly trimmed the long signature. Click to see the full one.

Re: ZX Spectrum 48k
On 05/05/2017 11:21 AM, Boris Vuletic wrote:

Original je nestabiliziran. Postavlja se pitanje:
Naime, kod stabiliziranog NEMA valovitosti napona,
a recimo za 7805 je dosta 7,5V na ulazu?

Original je nestabiliziran. Postavlja se pitanje:
Naime, kod stabiliziranog NEMA valovitosti napona,
a recimo za 7805 je dosta 7,5V na ulazu?
--
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
We've slightly trimmed the long signature. Click to see the full one.

Re: ZX Spectrum 48k

pise da mora biti originalno je zbog obrnutog polariteta u odnosu na
standardne ispravljace u sirokoj upotrebi... za Spectrum unutarnji pin MORA
BITI MINUS inace ces skuriti Spectruma tako da je u vecini slucajeva
neisplativ popravak jer zna crknuti saka dijelova...
dakle stavis ispravljac 9V/2A DC (srednji pin je minus)...
pozdrav
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