Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-09-04
1999-02-16
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310316, 310366, H01L 4108
Patent
active
058724192
ABSTRACT:
A piezoelectric transformer with voltage feedback is disclosed. The transformer comprises a piezoelectric plate of predetermined length, width and height with a driving section formed by alternately stacking a plurality of piezoelectric ceramic layers having internal interdigitated electrode layers. A driven section including an unpolarized dielectric section, a voltage feedback section in the form of a multilayer electrode structure or an outer strip, and a normally polarized dielectric section is also disclosed. The transformer generates an output voltage at an output terminal by the piezoelectric vibration transmitted from the driving section. A feedback control circuit is connected to the voltage feedback section. The isolated voltage feedback provides feedback control to keep the transformer operating at the proper resonant frequency even as there is a change in output load of the transformer.
REFERENCES:
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 3950659 (1976-04-01), Dixon et al.
patent: 3958161 (1976-05-01), Dixon
patent: 4347593 (1982-08-01), Trott
patent: 4503352 (1985-03-01), Inoue
patent: 4961252 (1990-10-01), Hsu et al.
patent: 5341061 (1994-08-01), Zaitsu
patent: 5424602 (1995-06-01), Sato et al.
patent: 5504384 (1996-04-01), Lee et al.
patent: 5576590 (1996-11-01), Ohnishi et al.
patent: 5701049 (1997-12-01), Kanayama et al.
Forst Donald
Hall Dale G.
Mech Harold W.
Phillips James R.
Vaughn Gary L.
Budd Mark O.
Cunningham Gary J.
Motorola Inc.
Raufer Colin M.
LandOfFree
Piezoelectric transformer with voltage feedback does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezoelectric transformer with voltage feedback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric transformer with voltage feedback will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2065070