NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/rec/radio/amateur/misc/23423

Internet Message Format | 1993-01-28 | 1.9 KB

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From: [e-mail]
Newsgroups: rec.radio.amateur.misc
Subject: Computer power supplies and radios.
Message-ID: <[e-mail]>
Date: 26 Jan 93 23:28:53 GMT
Sender: [e-mail]
Organization: Northern Arizona University
Lines: 22
Nntp-Posting-Host: nauvax.ucc.nau.edu

I have seen several posts saying that it is easy to use a computer power supply
to power a radio.  I remember an old post talking about using the computer
supply to charge a deep cycle battery and power the radio, but I can't find it.
Right now I am running my radio off a deep cycle battery and charging it with
an automotive charger as needed.  I would like to use the power supply to
charge the battery/power the radio.  How can I do this?

I have a 150 watt power supply, a group 27 deep cycle battery and a mobile two
meter radio (Alinco DR-110T).  I know the radio does not draw more that 15 amps
(the fuses are 15 amps) on high power, but don't know exactly how much it does
draw.  The power supply does not have any amperage ratings on it, but I am
afraid it would not supply enough current for high power transmitting.  The
power supply provides 5, 7 and 12 volts (approx) on the various connectors.  12
volts would probably be enough to run the radio but not charge the battery.
Do I have to modify the power supply to get a high enough voltage to charge the
battery?  Also I need some overcharging protection.  Any help would be greatly
appreciated.

--------------------------------------------------------------------------
Chris Michels -- Systems Programmer             [e-mail]
Northern Arizona University -- Flagstaff, AZ    [e-mail]
Phone: [phone]                           N7YIU