your latest purchase

For friendly off topic discussion not covered in a forum above.
Forum rules
No politics, please.
robespierre
Posts: 1555
Joined: Mon Sep 12, 2011 2:28 pm
Location: Boston

Re: your latest purchase

Unread postby robespierre » Wed Aug 16, 2017 5:21 pm

A country with two different voltages for household outlets would be quite odd. Fortunately Japan isn't so strange, it uses 100V throughout, but with two different frequencies (60 Hz in the west, 50 Hz in the east). A 16% difference in frequency is much less of a problem than 100% difference in voltage would be. Linear regulators are still viable countrywide, for example. They just must be sized to accommodate 50 Hz.
:PI: :O2: :Indigo2IMP: :Indigo2IMP:

User avatar
itsvince725
Posts: 133
Joined: Sun Nov 06, 2016 2:03 pm
Location: Quakertown, Pennsylvania, USA

Re: your latest purchase

Unread postby itsvince725 » Wed Aug 16, 2017 5:23 pm

The info label on the side says "50Hz/60Hz" so the PSU must be able to handle both but I'm not sure if it would handle 20% more voltage.
:Indigo2: :Indy:

User avatar
Raion-Fox
Donor
Donor
Posts: 1333
Joined: Thu Jan 30, 2014 5:01 pm
Location: near King George, Virginia
Contact:

Re: your latest purchase

Unread postby Raion-Fox » Wed Aug 16, 2017 6:44 pm

Is it an AT or ATX PSU or some sort of proprietary?

If I were you I would get a machine shop to weld those holes shut and then you can respray it with some beige paint and retrobrite the plastics - make it look like new.
:O3x02L: R16000 700MHz 8GB RAM kanna
:Octane: R12000 300MHz SI 896MB RAM yuuka
:Octane2: R12000A 400MHz V6 2.5GB RAM
:Indy: (Acclaim) R4600 133MHz XL Graphics 32MB RAM
:Indy: (Challenge S) R4600 133MHz (MIPS III Build Server)
Thinkpad W530 i7 3940XM 3GHz, 32GB, K1000M Windows 8.1 Embedded rin
Thinkpad R40 Pentium M 1.5GHz 2GB RAM kasha

User avatar
itsvince725
Posts: 133
Joined: Sun Nov 06, 2016 2:03 pm
Location: Quakertown, Pennsylvania, USA

Re: your latest purchase

Unread postby itsvince725 » Wed Aug 16, 2017 7:06 pm

It's some kind of proprietary. Turns out it will run but with extra stress on the PSU. Since these PSUs are apparently infamous for failing I'll just wait until I can buy a transformer.
:Indigo2: :Indy:

User avatar
guardian452
Donor
Donor
Posts: 3429
Joined: Tue Aug 21, 2007 10:12 pm
Location: United States
Contact:

Re: your latest purchase

Unread postby guardian452 » Wed Aug 16, 2017 8:01 pm

robespierre wrote:A country with two different voltages for household outlets would be quite odd. Fortunately Japan isn't so strange, it uses 100V throughout, but with two different frequencies (60 Hz in the west, 50 Hz in the east). A 16% difference in frequency is much less of a problem than 100% difference in voltage would be. Linear regulators are still viable countrywide, for example. They just must be sized to accommodate 50 Hz.


Forgive me, but, this is much more strange! I mean, common endpoint viltages in the USA include 120, 208, 240, 277, 480. And 347+600 in Canada. Multiple voltages are not strange at all.

Trasformers to convert voltage are cheap and simple.

But two different frequencies mean there must be two completely seperate grids (unless you have a phase converter etc).

From the end users perspective it's not so bad... but two separate grids I find mind boggling!

Edit: it should be 347, not 377, in Canada. Line voltage of 3 phase 600. 600 / √3 = 347. Which is a great voltage to drive LPS streetlights without a ballast. Which they used to do, and still do in many places.
Last edited by guardian452 on Fri Aug 18, 2017 4:20 pm, edited 1 time in total.

User avatar
miod
Posts: 508
Joined: Fri Oct 09, 2009 2:44 am
Location: Clermont-Ferrand (France)
Contact:

Re: your latest purchase

Unread postby miod » Wed Aug 16, 2017 11:10 pm

robespierre wrote:A country with two different voltages for household outlets would be quite odd. Fortunately Japan isn't so strange, it uses 100V throughout, but with two different frequencies (60 Hz in the west, 50 Hz in the east). A 16% difference in frequency is much less of a problem than 100% difference in voltage would be. Linear regulators are still viable countrywide, for example. They just must be sized to accommodate 50 Hz.

Ah yes, sorry, I misremembered and confused voltage and frequency. Thanks for correcting me.
:Indigo:R3000 (alas, dead) :Indigo:R4000 x4 :Indigo2:R4400 :Indigo2IMP:R4400 x2 :Indigo2:R8000 :Indigo2IMP:R10000 :Indy:R4000PC :Indy:R4000SC :Indy:R4400SC :Indy:R4600 :Indy:R5000SC :O2:R5000 x3 :O2:RM7000 :Octane:2xR10000 :Octane:R12000 :O200:2xR12000 :O200: - :O200:2x2xR10000 :Fuel:R16000 :O3x0:4xR16000 :A350:
among more than 150 machines : Apollo, Data General, Digital, HP, IBM, MIPS before SGI, Motorola, NeXT, SGI, Solbourne, Sun...

User avatar
theinonen
Posts: 377
Joined: Wed Feb 21, 2007 11:32 am
Location: Finland

Re: your latest purchase

Unread postby theinonen » Sat Aug 19, 2017 12:50 am

More stuff for my Speccy collection, ZX Evolution board build into case with couple soundcards and ZXM-Phoenix board.

Hombre71
Donor
Donor
Posts: 163
Joined: Wed Sep 14, 2016 4:10 am
Location: The Netherlands

Re: your latest purchase

Unread postby Hombre71 » Sun Aug 20, 2017 2:30 pm

Pair of 146.8gb u320 15K harddrives for 15 euro each :!:
:Tezro: :Fuel: :O2: :320: :1600SW:

User avatar
commodorejohn
Posts: 652
Joined: Tue Oct 02, 2012 1:22 pm
Contact:

Re: your latest purchase

Unread postby commodorejohn » Sun Aug 20, 2017 3:38 pm

Picked up a Commodore Datasette and an Apple IIc yesterday.
Computers: Amiga 1200, DEC VAXStation 4000/60, DEC MicroPDP-11/73
Synthesizers: Roland JX-10/SH-09/HS-80/MT-32/D-50, Yamaha DX7-II/V50/TX7/TG33/FB-01, Korg MS-20 Mini/ARP Odyssey/DW-8000/M1, Ensoniq SQ-80, E-mu Emax HD/Proteus-2, Casio CZ-5000, Moog Satellite, Sequential Circuits Prophet-600

User avatar
ScutBoy
Donor
Donor
Posts: 140
Joined: Sat Sep 19, 2009 3:13 pm
Location: Northfield, MN USA

Re: your latest purchase

Unread postby ScutBoy » Sun Aug 20, 2017 6:30 pm

May not count since they were free, but got a Mac Classic from one person, and a TRS-80 Model III in it's beat-up but original box from another person here in my little town.

Granted the Mac Classic isn't Apple's finest flower (and it needs recapping), but hey- free.

The Model III is dirty, but does start up. I will open it up and clean everything including the disk drives and check into whether there are any components that it's good to evaluate and replace before I give it a good workout.
:O2: :Indigo: :Cube: Image

Hombre71
Donor
Donor
Posts: 163
Joined: Wed Sep 14, 2016 4:10 am
Location: The Netherlands

Re: your latest purchase

Unread postby Hombre71 » Mon Aug 21, 2017 12:55 pm

Bought two 68 pins to SCA adapters. And a pci sata controller for the 320.
:Tezro: :Fuel: :O2: :320: :1600SW:

countzero
Posts: 12
Joined: Sat Aug 19, 2017 7:43 am

Re: your latest purchase

Unread postby countzero » Fri Aug 25, 2017 4:55 am

Seawolf-Ocean-Master ROV and a couple of CHIRP Scanning-Sonar.

Shiunbird
Donor
Donor
Posts: 389
Joined: Fri May 06, 2016 1:43 pm
Location: Czech Republic

Re: your latest purchase

Unread postby Shiunbird » Fri Aug 25, 2017 7:29 am

countzero wrote:Seawolf-Ocean-Master ROV and a couple of CHIRP Scanning-Sonar.


Are you serious????
WOW
ImageImage

countzero
Posts: 12
Joined: Sat Aug 19, 2017 7:43 am

Re: your latest purchase

Unread postby countzero » Fri Aug 25, 2017 10:42 am

Shiunbird wrote:
countzero wrote:Seawolf-Ocean-Master ROV and a couple of CHIRP Scanning-Sonar.


Are you serious????
WOW


Yup. 4K euro. With a camera.
But it can't go deeper than 20m.

User avatar
dexter1
Moderator
Moderator
Posts: 2738
Joined: Thu Feb 20, 2003 6:57 am
Location: Zoetermeer, The Netherlands

Re: your latest purchase

Unread postby dexter1 » Sat Aug 26, 2017 12:41 am

It's bigger (and heavier) than i anticipated, but this will carry most Optical Tube Assembly's up to about 10kg

AZ4.jpg
AZ4.jpg (195.89 KiB) Viewed 154 times
:Crimson: :PI: :Indigo: :O2: :Indy: :Indigo2: :Indigo2IMP:


Return to “Everything Else”

Who is online

Users browsing this forum: Baidu [Spider] and 2 guests