发明名称 |
High frequency cathode heater supply for a microwave source |
摘要 |
<p>A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor winding passing through primary core assemblies of the primary winding and a secondary winding arranged for connection to the cathode heater. A current monitor is arranged to monitor a current in the primary windings. Signal processing modules are arranged to receive a first input signal from the monitor winding indicative of a voltage across the cathode heater and a second input signal from the current monitor indicative of a current through the cathode heater. The signal processing modules are arranged to output a control signal to the SMPS inverter to control power supplied to the cathode heater dependent on a monitored resistance of, or monitored power supplied to, the cathode heater as determined from the first input signal and the second input signal.</p> |
申请公布号 |
GB2475261(B) |
申请公布日期 |
2014.10.22 |
申请号 |
GB20090019718 |
申请日期 |
2009.11.11 |
申请人 |
E2V TECHNOLOGIES (UK) LIMITED |
发明人 |
ROBERT RICHARDSON;COLIN ROBERT BENNETT;MICHAEL JOHN BLAND |
分类号 |
H02M7/5387;H01F27/38;H01F27/40;H01J23/34;H02M7/539;H05B6/66 |
主分类号 |
H02M7/5387 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|