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Classic Rotary Phones Forum

Telephone Switching => Key Systems (Electronic, 1A2 etc) => Topic started by: MMikeJBenN27 on July 05, 2020, 08:50:53 AM

Title: ITT 576 3 line 3 hold desk phone.
Post by: MMikeJBenN27 on July 05, 2020, 08:50:53 AM
Now that I got the phone working, what kind of power supply or transformer do I need for the lights on this phone?

Mike
Title: Re: ITT 576 3 line 3 hold desk phone.
Post by: RB on July 05, 2020, 09:02:14 AM
I think they are 10 volts???
Title: Re: ITT 576 3 line 3 hold desk phone.
Post by: Key2871 on July 05, 2020, 01:00:01 PM
Correct ten volts works great. If you can find a 9 volt wall wart those will work as well.
Title: Re: ITT 576 3 line 3 hold desk phone.
Post by: Babybearjs on July 05, 2020, 01:06:48 PM
9-12 volt range. if you have to go 24 volt, you'll have to change out all the lamps to #52A's (24 volt)
Title: Re: ITT 576 3 line 3 hold desk phone.
Post by: Key2871 on July 05, 2020, 03:39:44 PM
Anything over 10 and you risk melting or dis coloring the key holder, and you shorten the life of the bulb.
Title: Re: ITT 576 3 line 3 hold desk phone.
Post by: Babybearjs on July 06, 2020, 12:00:30 AM
thats true....but the 52A can work on a 18 volt lead... I have come across phones where they did have 24 Volt bulbs in the keystrip. I think AE was pretty good at using those in there phones.
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