Xref: utzoo rec.music.synth:15034 rec.music.makers:9655 comp.music:1704
Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!sharkey!cfctech!ttardis!rlw
From: rlw@ttardis.UUCP (Ron Wilson)
Newsgroups: rec.music.synth,rec.music.makers,comp.music
Subject: Re: Pocket Pedal
Message-ID: <2613@ttardis.UUCP>
Date: 29 Jul 90 16:05:30 GMT
Organization: Gallifrey
Lines: 30

In article <4028@iitmax.IIT.EDU>, ed@iitmax.IIT.EDU (Ed Federmeyer) writes:
>I have a broshure from Anatek that claims that thier products (at least the
>ones in this broushure, merge, pedal, filter, sequencer) require no
>batteries or power supply.  These all seem like products that would require
>active electronics.  Where do they get thier power?  I assume they have
>built in batteries, but how long do they last?  Do you throw out an $80
>pocket merge after a few months of heavy use?  Seems to me that it would have
>been better just to put a battery slot in there so these products will last.
>
>Ed Federmeyer  (ed@iitmax.iit.edu)

I have a Pocket Merge (tm).  It gets power from one of the 2 MIDI inputs -
I tested it by turning off one keyboard and then the other: input 1 can
be played without input 2, but not 2 without 1 - ie: the unit get its power
from the MIDI device connected to input 1.

My guess is that the unit taps power accoss the + side of the 5ma current
loop and the shield ground (according to the "official" suggested circuit
designed, the + side goes via a 220 ohm resistor to +5, and the - side goes
via an open collector logic output to signal ground; shield is supposed to
ONLY be connected at the MIDI out jack)

----------------------------------------------------------------------------
"We were wondering when somebody would discover that one."
	- The response of a customer support rep to a customer's phoned in
	  bug report (name of company with held to protect the guilty).

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