Telephone Flasher

Don V miss any more phone calls.

Chet Garrison W6ZZB 3544 E. Dayton Avenue Fresno CA 93726

So, you're at your rig with the ear phones on and working some good DX when the telephone rings. You don't hear it and it is your wife at the beauty parlor and she needs a ride home. Boy f Are you in trouble!

It you had built the circuit In this article, it could have saved you from the dog house. This circuit, when connected to AC and the telephone line, will flash a light every time the phone rings. Of

Fig, J. The foil stde of the board1

course you must have a phone outlet in your shack. Doesn't everyone?

The circuit is dirt simple and can be hard-wired or you can use the PC board accompanying this article. All the parts can be mounted on a 2" square circuit board and will fit into a "wall transformer" case from which the transformer has been removed. However, Til leave the cabinet or enclosure choice to you,

AC Outlets

AC Outlets

Rectifier

Phone Line

Rectifier

Phone Line

Fig, 2. The component side of the board, showing parts placement,

Fig, 2. The component side of the board, showing parts placement,

Fig> 3> The circuit diagram.

Fig> 3> The circuit diagram.

In my case, I chose a 48-voit SPOT relay because the ringing voltage is approximately 48 to 50 volts.

Parts list:

Relay 48 volt SPOT Part # R22-5D16-48, NTE Electronics Inc. (may be ordered from Radio Shack) CI I |xF, 200 volt, non-polarized C2 10 jiF, 50 volt Rectifier Full Wave Bridge RS

#276 1152 Miscellaneous AC oulets and plug and telephone wire with the pro] termination.

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