发明名称 |
Push-pull current-fed parallel resonant oscillator circuit and magnetron power supply comprising a push-pull oscillator. |
摘要 |
<p>A push-pull current-fed parallel resonant oscillator includes a parallel resonant LC tank circuit with one end coupled to one terminal of a DC current source via a serially connected first diode and first switching transistor and the other end of the tank circuit coupled to said one terminal via a serially connected second diode and second switching transistor. Respective capacitors (17, 21) shunt the series connections. The tank circuit inductor includes the primary of a transformer whose secondary is part of the transistor drive circuit. The circuit parameters are chosen to provide a duty cycle less than 50% and a high voltage gain of the AC tank voltage. The transistors are controlled to delay the turn-off time of the on-transistor thereby allowing a negative lvoltage to develop on the opposite capacitor which in turn delays turn-on of its parallel connected transistor so as to provide a dead-time ( A t2) during the switching interval in which both transistors are simultaneously off. The oscillator voltage gain is dependent on the circuit parameters and the load.</p> |
申请公布号 |
EP0204375(A2) |
申请公布日期 |
1986.12.10 |
申请号 |
EP19860200956 |
申请日期 |
1986.06.02 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION;N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
BRUNING, GERT WERNER C/O INT. OCTROOIBUREAU B.V.;FELLOWS, MARK WESTON C/O INT. OCTROOIBUREAU B.V. |
分类号 |
H05B6/68;H02M3/338;H03B5/12;(IPC1-7):H02M7/519;H02M3/315 |
主分类号 |
H05B6/68 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|