[NTLUG:Discuss] OT battery substitute

[Fred James]

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