Re: Power Supply for M&R Enterprises SUP'RMOD

["Thomas Kelly" <tjkelly@sbcglobal.net>]

I looked inside the case and it appears that you are correct about the
polarity. The contact for the side (sleeve) of the power connector is marked
GND on the board inside the RF Modulator.
I am worried about connecting too high a voltage.
Does anyone have first hand knowledge about this?
Even better does anyone have this exact model?
The front has a Computer/TV Antenna slide switch.
The bottom has a DC in connector and a Channel Select Switch (4/3).
The left side has TV Ant In terminals and Video In Connector.
The top has a 300 ohm twin lead cable (To TV Receiver VHF Terminal)
Below are links to pictures of the RF Modulator (front, bottom, left)

http://pages.sbcglobal.net/tjkelly/_images/front.jpg
http://pages.sbcglobal.net/tjkelly/_images/bottom.jpg
http://pages.sbcglobal.net/tjkelly/_images/left.jpg

----- Original Message -----
From: "Michael J. Mahon" <mjmahon@aol.com>
Newsgroups: comp.sys.apple2.marketplace
Sent: Wednesday, January 29, 2003 11:19 AM
Subject: Re: Power Supply for M&R Enterprises SUP'RMOD


> Thomas Kelly asked:
>
> (This should really have been posted on CSA2, not *.marketplace.)
>
> >I have a SUP'RMOD (RF Modulator) made by M&R Enterprises.
> >I have misplaced the power supply.
> >Can someone give me the specs for the power supply?
> >I believe the center pin is (+).
> >
> >I would like to learn the polarity of the plug that attaches to the
SUP'RMOD
> >as well as the voltage and current ratings.
> >
> >Thanks for any information you can provide.
>
> The Sup'R'Mod that I am familiar with was an internal modulator for
> the Apple ][, ][+, and //e.  It has a 4-pin Molex connector that mates
> with the main board pins for both power and video.
>
> You are probably asking about an external version for the //c.
>
> I would infer that it uses a 12vdc power supply, but you should
> look inside to see what the polarity is.  (Center + is more common,
> but there are no guarantees.)  A current of 100ma should be plenty,
> and this is about the smallest capacity 12vdc "wall wart" you will
> find.
>
> Perhaps someone here has one and the power supply is labeled.
>
> -michael