Buzzer damping sound producing device

Details Buzzer damping sound producing device Buzzer damping sound producing device

1993-03-15

1994-12-27

Peng, John K.

Communications: electrical

Audible indication

Electronic

3403841, 3403846, G08B 300

Patent

active

053769163

ABSTRACT:
A buzzer damping sound producing device in which a fundamental frequency pulse signal is applied to a buzzer to produce a damping sound with a predetermined period. The device includes a variable duty pulse generator which produces a fundamental frequency pulse signal repeatedly, the duty ratio of which is gradually decreased per predetermined period. The fundamental frequency pulse signal thus produced is applied to the buzzer to operate the buzzer, whereby buzzer damping sounds different in period and frequency can be produced readily.

REFERENCES:
patent: 4482888 (1984-11-01), Todaka et al.
patent: 4602551 (1986-07-01), Firmani et al.

Affiliated with

Also associated with

Rating

Buzzer damping sound producing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Buzzer damping sound producing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buzzer damping sound producing device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-921583