← Back to Patent Explorer
JPH0833352A Expired / Lapsed JP ⏱️ 0.0 years remaining

Piezoelectric transformer drive circuit

Assignee: Tamura Corp
•
Filing: 1994-07-20
•
Granted: —
•
Expires: 2014-07-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 駆動パルスの周波数を変化させて出力電圧を 変化させることで所定の電圧に安定化させる圧電トラン スの駆動回路において、圧電トランス1の共振周波数f 0 を超えて周波数が変化した場合に発振を止めて回路を 保護することにより、低い周波数でも飽和しないトラン スTが不要で低コストの圧電トランスの駆動回路を提供 する。 【構成】 共振周波数f 0 を超えて周波数が変化したと きにこれを検出して、発振を停止させる保護回路2であ って、積分器4の出力が所定の電圧値を超えると動作し て、V−Fコンバータ3の動作を停止させる保護回路2 を設けた。 (57) [Summary] [Objective] In a piezoelectric transformer drive circuit that stabilizes a predetermined voltage by changing the frequency of a drive pulse to change the output voltage, the resonance frequency f of the piezoelectric transformer 1 Provided is a low-cost piezoelectric transformer drive circuit that does not require a transformer T that does not saturate even at a low frequency by stopping oscillation when the frequency changes beyond 0 and protecting the circuit. A protection circuit 2 that detects a change in frequency exceeding the resonance frequency f 0 and stops oscillation, and operates when the output of the integrator 4 exceeds a predetermined voltage value. Protection circuit 2 for stopping the operation of the V-F converter 3 Was provided.

Inventors

  • 👤 Kimio Yoshimi
  • 👤 公男 吉見
  • 👤 Yuichi Abe
  • 👤 雄一 阿部

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-02 05:43
CPC Classifications
Y; Y02; Y02B; Y02B70/00; Y02B70/10

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag