Coin telephone control circuit

Details Coin telephone control circuit Coin telephone control circuit

1981-02-13

1982-11-30

Brigance, Gerald L.

179 251, H04M 1702, H04M 1900

Patent

active

043617310

ABSTRACT:
Coins deposited in a coin telephone are collected or refunded by selectively discharging one of a plurality of capacitors (10,12) through a current limiter (46) for a period just long enough to operate the coin control relay (38) in the telephone. Use of this current limiter minimizes the drain of power from the remote terminal of a subscriber loop carrier system which derives all of its power from a telephone central office. A second current limiter (24) limits the rate at which the capacitors are charged.

REFERENCES:
patent: 4010328 (1977-03-01), McGuire
patent: 4152546 (1979-05-01), Stewart
patent: 4174468 (1979-11-01), Stelte
patent: 4197432 (1980-04-01), Tiedt
patent: 4197433 (1980-04-01), Bronner
patent: 4243841 (1981-01-01), Young

Affiliated with

Also associated with

Rating

Coin telephone control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coin telephone control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coin telephone control circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-196851