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Conference cookie::notes$archive:cd_v1

Title:Welcome to the CD Notes Conference
Notice:Welcome to COOKIE
Moderator:COOKIE::ROLLOW
Created:Mon Feb 17 1986
Last Modified:Fri Mar 03 1989
Last Successful Update:Fri Jun 06 1997
Number of topics:1517
Total number of notes:13349

1385.0. "external power problem" by LEDDEV::METZGER (You're one of us now, Michael) Fri Nov 11 1988 07:47

    
    I've got a portable player that either runs off of 4 1.5v AA batteries
    or off of an external power source. I am using a radio shack AC
    adapter that you can select between multiple voltages from 3 to
    12v.
    
    My problem is that when I run the cd player with the adapter in
    the 6v position when the disc spins up it flashes the low battery
    light and falses upon startup or upon seeking different tracks a
    lot. If I move the adapter to the 7.5 v slot it works a lot better
    and rarely falses. It also runs fine when I run it off of the adapter
    that plugs into the cigerette lighter on my car.
    
    Do I run the risk of hurting the player by leaving the adjustable
    adapter in the 7.5v setting or do I possibly have a bad adapter
    that isn't putting out the specified voltage to run the player at?
    
    
    thanks,
    
      John
T.RTitleUserPersonal
Name		DateLines
1385.1probably a current problem, not voltageSTAR::BIGELOWBruce Bigelow, DECnet-VAXFri Nov 11 1988 09:0114
    I've seen this problem before with AC adapters that are rated at
    too little current.  Setting them at a slightly higher voltage seems
    to help, but probably isn't good for the player.
    
    I'd recommend that you check the current rating on your adapter
    and make sure it's at least 500mA.  If it's only 300 or 350mA (which
    is what most of the Radio Shack adapters are, then it isn't good
    enough.  I use the Radio Shack 273-1651A adapter with my Sony because
    it's rated at 500mA.  Don't use this one on yours, since it's a
    fixed voltage 9v adapter.  The only adjustable I remember seeing
    when I bought mine was rated around 300mA.  Maybe you should order
    one from the manufacturer of your player.
    
    B
1385.2DECSIM::MATSUOKAOmit needless apostrophe's!Fri Nov 11 1988 09:156
    Take a look at your player's back panel and the adaptor to find out
    whether the adaptor can produce enough current for the player's current
    requirement.   My R.S. catalogue indicates that non of their AC-to-DC
    adaptors can produce more than 300 mA at 6 V.
1385.3RS player and Adapter. I should have known.LEDDEV::METZGERYou're one of us now, MichaelFri Nov 11 1988 09:2115
    
    yup, The player specifies a minimum of 500ma and the adapter is
    only putting out 300ma. Looks like I'm off to find a new adapter.
    
    I actually only need to switch the setting during initial startup
    of the player. Once it gets going and finds the first track I can
    switch the adapter back to 6v and it runs fine.
    
    Anyone know where I can find a 6v adapter that puts out 500ma ?
    
      thanks for the help,
    
              John
1385.4DECSIM::MATSUOKAOmit needless apostrophe's!Fri Nov 11 1988 11:3425
    If you live in the metro Boston area, try U-Do-It Electronics
    in Needham near the intersection of Rt. 128 and Highland Ave.
    
    The 1988 Active catalogue lists an adaptor which converts 115 VAC
    to 3, 4.5, 6, 7.5, 9, or 12 volts DC.  It comes with a polarity
    reversing switch and a 4-way multi-plug.  Part #69189. Price $17.29
    
    Contact:
    
    	Active
    	133 Flanders Road
    	Westboro, MA  01581
    	(508) 366-8899
    
    or
    
    	Active
    	13107 Northup Way/
    	20th St. N.E.
    	Bellevue, WA   98005
	(206) 881-8191


    Either way, you may have to replace the power plug.