[NTLUG:Discuss] OT battery substitute

[Levi Darby]

A 6v adapter should be fine.  Just make sure not to use too high of
current.  I don't recommend going higher than 400 mA though.
On Apr 30, 2011 3:29 PM, "Fred James" <fredjame at fredjame.cnc.net> wrote:
> OT battery substitute
> This may seem contrary, but I have a couple of devices (land line
> phones) that require 4 AA batteries each and I want to substitute AC
> adapters for those batteries.
>
> Figuring 4 AA 1.5V DC batteries equals 6V DC, I tried a 6V AC to DC
> adapter and found two undesired effects
> (a) a light that is meant to blink when there is or has been a new
> or unanswered call, simply glowed steadily - as in all the time
> regardless of call activity
> (b) there was an annoying steady buzz in the receiver that continued
> throughout any and all calls - incoming and outgoing
>
> Now I think we can know that the device does not require a constant 6V
> DC because of course DC batteries do run down and while that is
> happening the devise continues to function properly.
> (a) I was told by a representative from a battery supplier that most
> 6V DC devices will continue to function well down to 5V DC
> (b) I had been running them on rechargeable batteries, which are
> rated at 1.2V DC each, or a total of 4.8V DC, without any issues
>
> My question may be moot because I have already ordered a pair of 5V DC
> adapters, but ...
>
> So to me, it seems possible that the 6V DC adapter is just too much
> power (volts or amps?), and I was wondering if there might be someway of
> mitigating the output from the adapter?
>
> By the way, I did measure the adapter and it shows a good 6.1V DC.
> Thanks
> Regards
> Fred James
>
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