10 August 2015, 22:08 | #21 | |
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Quote:
That is not a place where developers buy components. It is for the general public who just buy one or two units. If that turned out to be the only option I would drop the project immediately, as it would no longer be economically viable. I'm not sure what a Mechy Apower style PSU is, but I'm guessing it is an enclosure that at these miniscule volumes would cost me more per unit to make than the end user would pay for the entire power supply. The mechanism for ensuring exactly 5V is called regulation. This is normally performed by pulse width modulation, which is what I would be using. |
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10 August 2015, 22:18 | #22 |
Puttymoon inhabitant
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This is very unhappy situation. I would like to buy several complete PSUs for my Amigas that dont have any, not as a replacement, but as spare ones. If I have to kill one to get another one working, it is not a solution for me.
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10 August 2015, 22:19 | #23 |
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you need create 5V 5A for amiga with espansion
12V 2A and -12V 0,1A if you need square connector, i have 4 nos black Last edited by cpiac64; 10 August 2015 at 22:35. |
10 August 2015, 22:25 | #24 |
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Talking of ampage, will it cope with extra stuff installed like an accelerator (Blizzard 1230 or BPPC in A1200), indi ECS/AGA, USB, A1200 PCMCIA card, up to 3 external floppy drives etc?
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10 August 2015, 22:26 | #25 | ||
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Quote:
Quote:
No. Last edited by prowler; 10 August 2015 at 23:37. Reason: Back-to-back posts merged. |
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10 August 2015, 22:37 | #26 |
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some original psu are 4,5 A on 5 volt
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10 August 2015, 22:41 | #27 |
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10 August 2015, 22:41 | #28 |
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Developing a new A500/1200/600 power supply. -12V needed?
Aren't people just using pcio psu's these days (the genuine ones are good), non genuine are rubbish however
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10 August 2015, 22:42 | #29 |
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10 August 2015, 22:44 | #30 |
Puttymoon inhabitant
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But you know - I need additional new PSUs. That means I would need to buy some faulty ones - or connectors - because of it. If you are able to develop a cheap complete SMALL Amiga PSU, I will buy it. I am fed up with bricks.
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10 August 2015, 22:56 | #31 | ||
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Quote:
That's the idea. But we may have to be flexible regarding connectors. |
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10 August 2015, 23:06 | #32 |
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Be much easier if they had used a round 5 pin din for socket/plug, would have saved a lot of messing about. Just wondering if there is a 5 pin round socket that will fit the same pinout?
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10 August 2015, 23:21 | #33 | |
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For those who can use a soldering iron, with a little imagination you could cut the connector off and install almost any right-angled connector you wanted. Or you could attach something like this: Last edited by Mounty; 10 August 2015 at 23:26. |
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11 August 2015, 09:40 | #34 |
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Maybe there wasn't much of a demand for a C64 PSU. That would put most developers off.
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11 August 2015, 09:55 | #35 |
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Yep, a 5-pin round DIN connector would most likely be a drop-in (solder-in) replacement for the existing connector. The only problem might be someone trying to use an incompatible PSU and frying something - C64 or Atari XL for example.
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11 August 2015, 11:09 | #36 |
ex. demoscener "Bigmama"
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that's just a matter of connecting the sense line to the power connector that plugs into the amiga. Requires an additional (thin) wire in the cable, though..
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11 August 2015, 11:14 | #37 | |
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The Amiga will accept a few mV either side of 5V. A decent regulator will take care of that. Last edited by Mounty; 11 August 2015 at 12:22. |
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11 August 2015, 14:42 | #38 | |
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The demand is massive. Look at the huge amount of PSU threads on Lemon64, or the many replies to Kipper2k's thread (which came to nothing, and he can't even be bothered to reply in that thread now.) The C64 PSU was so incredibly bad that almost everyone looks to replace it when they get a 64. Last edited by john1979; 11 August 2015 at 14:49. |
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11 August 2015, 16:38 | #39 | |
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11 August 2015, 17:02 | #40 |
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They get hot and slowly cook themselves. To make it worse some are filled with epoxy trapping the heat in even more. When they fail they usually send around 12v down the 5v rail and kill the C64. To make it even worse again, people tend to assume the C64 is broken and not think about the PSU, so they plug it into a another C64 and kill that one as well.
They are ticking time bombs. |
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