Line powered flasher circuit for ringing signal

Details Line powered flasher circuit for ringing signal Line powered flasher circuit for ringing signal

1984-05-07

1986-03-25

Rubinson, Gene Z.

179 99LS, H04M 1102

Patent

active

045785422

ABSTRACT:
A flasher circuit for providing intermittent pulses of light in response to the presence of a ringing signal on a telephone subscriber line. The circuit is powered solely from the energy available in a ringing signal on the telephone line and requires no external source of power. The circuit includes a voltage doubler (38, 39) arrangement for charging a storage capacitor (40). The voltage across the storage capacitor in turn is applied to a timing circuit (60, 62) which controls the triggering of a thyristor switch (55) which, when turned on, provides a high voltage output pulse from a pulse transformer (48). This pulse is applied to break down a xenon flash tube (45) of the type normally used in electronic photo flashes to provide a visible indication of the presence of a ringing signal on the phone line. The circuit provides multiple light pulses 12 during any given on interval (15) of the ringing signal on the telephone line. In one embodiment, a neon bulb (58) used as a voltage breakdown device, is optically coupled (70) to the xenon tube to provide photons to induce ionization of the xenon gas at a lower voltage.

REFERENCES:
patent: 4379210 (1983-04-01), Sparber
patent: 4430602 (1984-02-01), Ohmori

Affiliated with

Also associated with

Rating

Line powered flasher circuit for ringing signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Line powered flasher circuit for ringing signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line powered flasher circuit for ringing signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-632510