i inherited 2 of these from a fellow pack rat but i can not find the data sheet
for them
he said he has had them since the 80's
it appear to work ok
could it be the base of a variable power supply
richard
--
Monitor your
yes device info is needed got pics to post to image bin?
--
jeremy youngs
--
Monitor your physical, virtual and cloud infrastructure from a single
web console. Get in-depth insight into apps, servers, databases, vmware,
On 26 November 2012 16:50, wrote:
> i inherited 2 of these from a fellow pack rat but i can not find the data
> sheet for them
> he said he has had them since the 80's
> it appear to work ok
> could it be the base of a variable power supply
That very much depends on what it is.
--
atp
If you
yes so all i want to know is what is it :) im now intrigued what an
amazing device !!!
lol!
On Mon, Nov 26, 2012 at 11:56 AM, andy pugh wrote:
> On 26 November 2012 16:50, wrote:
>> i inherited 2 of these from a fellow pack rat but i can not find the data
>> sheet for them
>> he said he has ha
On Mon, 26 Nov 2012, jeremy youngs wrote:
> yes device info is needed got pics to post to image bin?
>
brain fart
http://www.ebay.com/itm/Lot-of-6-Douglas-Randall-Proportional-Controller-Model-R15A-120V-15A-/150800378506
--
On Mon, 26 Nov 2012, jeremy youngs wrote:
> yes so all i want to know is what is it :) im now intrigued what an
> amazing device !!!
> lol!
>
http://dir.groups.yahoo.com/group/CAD_CAM_EDM_DRO/message/28657
> On Mon, Nov 26, 2012 at 11:56 AM, andy pugh wrote:
>> On 26 November 2012 16:50, w
they look like solid state relays to me
On Mon, Nov 26, 2012 at 12:08 PM, wrote:
> On Mon, 26 Nov 2012, jeremy youngs wrote:
>
>> yes device info is needed got pics to post to image bin?
>>
>
> brain fart
> http://www.ebay.com/itm/Lot-of-6-Douglas-Randall-Proportional-Controller-Model-R15A-120V-
hm
well it says proportional so it may be an igbt but then why the 4th
terminlal? scr, triac?
well the truth is i dont know but i would surely have a load on it
when i tested it
On Mon, Nov 26, 2012 at 12:16 PM, wrote:
> On Mon, 26 Nov 2012, jeremy youngs wrote:
>
>> yes so all i want to know
st my wild guessing though.
-- Ralph
From: kqt4a...@gmail.com [kqt4a...@gmail.com]
Sent: Monday, November 26, 2012 9:16 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] off topic - device info needed
On Mon, 26 Nov 2012, jeremy youngs wrote:
jeremy youngs wrote:
> they look like solid state relays to me
>
They are phase angle SCR controllers. You put a variable resistance
across two of the terminals, and they vary the power to a line-powered
device. Basically a heavy-duty lamp dimmer.
Jon
On Mon, 26 Nov 2012, Jon Elson wrote:
> They are phase angle SCR controllers. You put a variable resistance
> across two of the terminals, and they vary the power to a line-powered
> device. Basically a heavy-duty lamp dimmer.
>
can you give me an example of a 21st century equivalent
would this
.
-- Ralph
From: kqt4a...@gmail.com [kqt4a...@gmail.com]
Sent: Monday, November 26, 2012 11:50 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] off topic - device info needed
On Mon, 26 Nov 2012, Jon Elson wrote:
> They are phase angle
On 11/26/2012 1:54 PM, Jon Elson wrote:
> jeremy youngs wrote:
>
>> they look like solid state relays to me
>>
>>
> They are phase angle SCR controllers. You put a variable resistance
> across two of the terminals, and they vary the power to a line-powered
> device. Basically a heavy-du
On 11/26/2012 2:50 PM, kqt4a...@gmail.com wrote:
> On Mon, 26 Nov 2012, Jon Elson wrote:
>
>
>> They are phase angle SCR controllers. You put a variable resistance
>> across two of the terminals, and they vary the power to a line-powered
>> device. Basically a heavy-duty lamp dimmer.
>>
>>
On 12-11-26 03:35 PM, Dave wrote:
> On 11/26/2012 1:54 PM, Jon Elson wrote:
>> jeremy youngs wrote:
>>
>>> they look like solid state relays to me
>>>
>>>
>> They are phase angle SCR controllers. You put a variable resistance
>> across two of the terminals, and they vary the power to a
On Monday 26 November 2012 20:37:59 kqt4a...@gmail.com did opine:
> On Mon, 26 Nov 2012, Jon Elson wrote:
> > They are phase angle SCR controllers. You put a variable resistance
> > across two of the terminals, and they vary the power to a line-powered
> > device. Basically a heavy-duty lamp dim
On Monday 26 November 2012 21:10:18 Allen did opine:
> On 12-11-26 03:35 PM, Dave wrote:
> > On 11/26/2012 1:54 PM, Jon Elson wrote:
> >> jeremy youngs wrote:
> >>> they look like solid state relays to me
> >>
> >> They are phase angle SCR controllers. You put a variable resistance
> >> across t
kqt4a...@gmail.com wrote:
> On Mon, 26 Nov 2012, Jon Elson wrote:
>
>
>> They are phase angle SCR controllers. You put a variable resistance
>> across two of the terminals, and they vary the power to a line-powered
>> device. Basically a heavy-duty lamp dimmer.
>>
>
> can you give me an e
On 11/26/2012 03:13 PM, Ralph Stirling wrote:
> Get a real power supply with a transformer, rectifier,
> and capacitor.
If you have switching stepper drivers that have *a capacitor across the
DC input*, you may be able to use the power supply from an old 20 to 50
watt per channel stereo amplifier
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