公开(公告)号：US20060290389A1

公开(公告)日：2006-12-28

申请号：US11165716

申请日：2005-06-23

申请人： Mark Merry ,  Jeff Miller ,  Frank Madison

发明人： Mark Merry ,  Jeff Miller ,  Frank Madison

IPC分类号： H03B1/00

CPC分类号： F23N5/242 ,  F23N2023/12 ,  F23N2029/06

摘要： An electronic circuit for generating a trapezoidal excitation waveform includes a controllable frequency source and a trapezoidal waveform generator. The controllable frequency source generates a source waveform that, upon energization thereof, has an initial frequency value, and decreases in frequency to a substantially constant frequency value a time period after energization. The trapezoidal waveform generator receives the source waveform and, in response, generates a trapezoidal waveform at least when the source waveform frequency attains the substantially constant frequency value.

公开(公告)号：US799957A

公开(公告)日：1905-09-19

申请号：US1904231106

申请日：1904-11-02

申请人： LOUIS F DOELLINGER ,  WINN FRANK MADISON

发明人： WINN FRANK MADISON

CPC分类号： F16L3/12