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Author Topic: SC-55 with a built-in power supply  (Read 5973 times)
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mace
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« Reply #20 on: June 09, 2009, 02:49:39 PM »

I've finally recieved my 9V LDO regulator, I'll install it tonight and post some pictures when I get the time to do so.
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Using in/on my rig now:
MT-32 first gen, CM-64, SC-155, NEC DB60XG, Yamaha FB-01, AWE64 Gold, MPU-IPC-T
mace
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« Reply #21 on: June 09, 2009, 06:35:46 PM »

Pictures:

Overview:

Not my best soldering, I had to adjust the components a few times so it's kinda messy, works fine tho.

This is the swich on the front panel, I may change it for a less conspicuous one.


Here you can see the regulator I used.


Components used:

-IEC type connector with fuse holder as power input.
-SPST toggle switch
-transformer, 2x9V I forgot the current rating. Wired in parallel.
-LM2940T-9.0 LDO regulator, this is like a 7809 but with just 0,5 voltage drop.
-6800uF electrolytic.
-100uF electrolytic.
-2x 100n ceramic capacitors for decoupling.
-4x 1N5819 diodes for the diode bridge.
« Last Edit: June 09, 2009, 06:37:09 PM by mace » Logged


Using in/on my rig now:
MT-32 first gen, CM-64, SC-155, NEC DB60XG, Yamaha FB-01, AWE64 Gold, MPU-IPC-T
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« Reply #22 on: June 09, 2009, 06:41:43 PM »

Awesome! Smiley

I like the switch in the front, too.
Is it so, when you switch off the unit, the transformer keeps 'powered on'?
In my case it is like that, I was thinking of a true 230V on/off switch as well but then again, as far as I know a transformer with no load doesn't get hot and doesn't consume much power anyway.
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mace
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« Reply #23 on: June 09, 2009, 06:51:26 PM »

Awesome! Smiley

I like the switch in the front, too.
Is it so, when you switch off the unit, the transformer keeps 'powered on'?
In my case it is like that, I was thinking of a true 230V on/off switch as well but then again, as far as I know a transformer with no load doesn't get hot and doesn't consume much power anyway.

No mine switches the 230 so no power whatsoever is drawn when it's off.

Edit: I still keep saying 220, haha.  Grin
« Last Edit: August 04, 2009, 07:12:24 PM by mace » Logged


Using in/on my rig now:
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« Reply #24 on: July 06, 2009, 01:21:38 PM »

I changed my MT-32 with a front power switch too.
Now all my midi devices switch on and off from the front side which is easier an besides the mt-32 now TRUELY switches off completely.

Pic (clickable for larger):

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jharris01
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« Reply #25 on: July 06, 2009, 06:33:58 PM »

Looks great man. No more reaching out the back button!
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BlueMax
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« Reply #26 on: July 06, 2009, 10:56:19 PM »

One of those under-your-monitor power switching stations would be a lot easier than switching on/off a half-dozen modules (let alone making your own neato power switch!)  Smiley

Man - what an awesome collection you have!
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Cloudschatze
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« Reply #27 on: July 07, 2009, 02:22:43 AM »



Those days of fiddling with that tiny volume knob are soooo over.  Roll Eyes

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« Last Edit: July 07, 2009, 02:35:05 AM by Cloudschatze » Logged
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« Reply #28 on: July 07, 2009, 04:45:29 AM »

Those days of fiddling with that tiny volume knob are soooo over.  Roll Eyes

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Wow.. That's awesome Cheesy
Makes me wonder how far one could 'pimp' his/her mt-32. Maybe different colour, different LCD?
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Cloudschatze
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« Reply #29 on: July 07, 2009, 09:52:46 PM »

Wow.. That's awesome Cheesy

I was going to add some sort of magnifier over the display (to make it easier to read, you know), but my limited Photoshop skills could only take me so far...
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