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- Newsgroups: sci.electronics
- Path: sparky!uunet!keinstr!chaplin
- From: chaplin@keinstr.uucp (Roger Chaplin)
- Subject: Re: Teeny-weeny Sony power connector?
- Message-ID: <1992Nov13.143003.26580@keinstr.uucp>
- Organization: Keithley Instruments, Cleveland, Ohio
- X-Newsreader: TIN [version 1.1 PL6]
- References: <1992Nov12.142427.25333@panix.com>
- Distribution: usa
- Date: Fri, 13 Nov 1992 14:30:03 GMT
- Lines: 49
-
- Michael Schuster (schuster@panix.com) wrote:
- [ concerning Bradley G. Kaiser's need for a special Sony power connector ]
- : I ran into the rame problem with my ICF-SW55 when looking for a car power
- : adaptor. Sony has you by the "Balls". The new "Unified" power connector
- : has not yet been cloned.
-
- The problem with different power connectors did not just suddenly
- appear when Sony came out with their "Unified" power connector. There
- were already a few different sizes of the coaxial power connector in
- use. I found this out the hard way when I purchased a CD-to-FM-radio
- adaptor for my car. It supplies power to whatever portable stereo you
- want to connect via a cable with a `standard' power connector at each
- end. The trouble is, the supplied connector ALMOST fits each of my
- portable stereos (except the new Sony CD player).
-
- My solution was to fit a truly standard connector in-line in the AC
- adaptor for each of the portable stereos, and also put the same
- standard connector on the end of the power cord coming from the
- CD-to-FM adaptor. The connector I chose was a 3-conductor (stereo)
- 1/8" phone jack/plug.
-
-
- ------------
- | |
- | AC | ______ _____ _______
- | Adaptor |---------------------| | --| |-------------| |
- | | ------ ----- -------
- | | 1/8" 1/8" original
- ------------ stereo stereo AC Adaptor
- in-line plug plug
- jack
-
-
- When I want to use the portable stereo in the car, I take it AND the
- `pigtail' adaptor cord, and plug it into the 1/8" jack on the end of
- the car adaptor's power cord.
-
- The reason I chose a 3-conductor (stereo) rather than a 2-conductor
- (mono) connector is that for some stereos, the `ring' of the connector,
- rather than the `tip', is the positive voltage connection. All of the
- 2-conductor plugs I've seen have exposed metal which is connected to
- the ring. I didn't want any chance of shorting that conductor to the
- grounded metal of the car's gear shift, etc.
-
- --
- Roger Chaplin / Instruments Division Engineering / "This land is your land,
- chaplin@keinstr.uucp / CI$: 76307,3506 / This land is my land,
- #include <disclaimer.h> / One of us has a bogus deed
- #include "disclaimer.h" /* cover all bases */ / to this land." - George Carlin
-