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An Amiga related technical issue!!!!!!!

Deanodarlo

Senior member
Yes these machines are still going strong, if not a bit long in the tooth. 🙂

I want to replace my 3.5" HD in my 1200 with a larger model, but I'm not sure if the standard PSU will handle the larger drives current draw. The standard PSU specs are:

Total 25W

+12V 500mA = 6W
+5 3A = 15W
-12V 100mA = 1.2W

Currently I have an IBM 330MB 3.5" HD in my 1200 with the following power requirements:

Current HD

RPM=3800


I slaped this baby in 10 years ago and everything is still going strong.

Recently I purchased a 2GB seagate HD to replace my IBM. These 3.5" drives are ideal for 1200's because they're so small. Compare these physical specs:

IBM 3.5" & every other brand: Ht 25.4mm, Wd 101.6mm, L 146mm
Seagate 3.5": Ht 19mm, Wd 102.1mm, L 127mm

I had quite a bit of trouble with the height of the IBM, but the seagate slips in the 1200 like it was made to fit. The only thing left to worry about is the power requirements. Luckily I also have an old PC with a 1.28GB seagate HD, so I can basically place either the 2Gb or the 1Gb seagate hard drive in my 1200.

The reason I'm sticking to 3.5" drives is because I've already got all the leads and done the required mod to make them fit.

Here's the specs for the 1.28GB:

Seagate 1.28

RPM = 5200


and the 2.11GB:

Seagate 2.11

RPM= 5200


Questions:

Can anyone tell me which one I should choose?
Will the current draw be too high for the standard PSU?
Will the drive spinup fast enough for the 1200 to boot on second attempt (like my IBM does at the moment)?

Thanks for anyone?s help, much appreciated! 🙂
 
You're clearly better with the smaller drive, though I'm not going to venture a guess as to whether it will work... I don't know how much power the rest of the system draws....

Carlo



<< Yes these machines are still going strong, if not a bit long in the tooth. 🙂

I want to replace my 3.5" HD in my 1200 with a larger model, but I'm not sure if the standard PSU will handle the larger drives current draw. The standard PSU specs are:

Total 25W

+12V 500mA = 6W
+5 3A = 15W
-12V 100mA = 1.2W

Currently I have an IBM 330MB 3.5" HD in my 1200 with the following power requirements:

Current HD

RPM=3800


I slaped this baby in 10 years ago and everything is still going strong.

Recently I purchased a 2GB seagate HD to replace my IBM. These 3.5" drives are ideal for 1200's because they're so small. Compare these physical specs:

IBM 3.5" & every other brand: Ht 25.4mm, Wd 101.6mm, L 146mm
Seagate 3.5": Ht 19mm, Wd 102.1mm, L 127mm

I had quite a bit of trouble with the height of the IBM, but the seagate slips in the 1200 like it was made to fit. The only thing left to worry about is the power requirements. Luckily I also have an old PC with a 1.28GB seagate HD, so I can basically place either the 2Gb or the 1Gb seagate hard drive in my 1200.

The reason I'm sticking to 3.5" drives is because I've already got all the leads and done the required mod to make them fit.

Here's the specs for the 1.28GB:

Seagate 1.28

RPM = 5200


and the 2.11GB:

Seagate 2.11

RPM= 5200


Questions:

Can anyone tell me which one I should choose?
Will the current draw be too high for the standard PSU?
Will the drive spinup fast enough for the 1200 to boot on second attempt (like my IBM does at the moment)?

Thanks for anyone?s help, much appreciated! 🙂
>>

 
Ah, Amiga... I still have my trusty A500 gathering dust in the closet 🙂. I occasionally play some Speedball 2 with it 🙂. They don't make 'em like they used to...
 
Those of you who still love the Amiga then have a look here:

EAB - English Amiga Board

and don't forget you can use WinUAE to emulate the Amiga on your PC and play those classics! 🙂

As for the PSU, thanks to those who've replied. I've managed to get a good deal on a Goliath 200W Amiga PSU that covers all my power requirements. 😀
 
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