Dial Tone Generator for your DEMO phone

[ramegoom]

$37 shipped to US address.

The circuit, tested and calibrated, is now available. It requires 9-24VDC input, and puts out a 1v. P-P square wave dial tone. You can install this 2x3" circuit into your phone, and attach a 12v. "wall-wart" supply to its inputs. Whenever you pick up your display phone, you'll get a dial tone! It can also be used with an internal 9V battery, and wired to the hook switch so when it's on hook, the circuit is off - this way your demo phone will be self-contained.

The circuit uses a built-in power supply regulator and consumes very little power.

Here's the finished part. Let me know if you're interested.

[dc4code]

Is it possible that you can make this have the older style dial tone?

And another thought, what if you add a Pulse decoder or something?

[Key2871]

My understanding is, this only provides a dial tone, it's not going to be able to dial a Co line.
Are you asking for the tone to go off when a digit is dialed?

[TelePlay]

     GLOBAL MODERATOR POST

Is it possible that you can make this have the older style dial tone?

And another thought, what if you add a Pulse decoder or something?

     http://www.classicrotaryphones.com/forum/index.php?topic=20673.0

REF (originating topic):     http://www.classicrotaryphones.com/forum/index.php?topic=20307.0