发明名称 |
Device for driving directly heated cathode of cathode ray tube |
摘要 |
A device for driving a directly heated cathode of a cathode ray tube eliminating a delay due to inductance of a transformer. A transformer that produces the heater-heating signal voltage applied to the cathode includes a secondary coil divided into first and second coils. The voltage induced in the first coil is used for the heater-heating voltage and the signal induced in the second coil is synchronized with the voltage induced in the first coil and used as a bias voltage for turning on and off a switching element in synchronization with the heater-heating voltage. The switching element turns on only when the heater-heating signal voltage is applied to a control terminal of the switching element.
|
申请公布号 |
US5744911(A) |
申请公布日期 |
1998.04.28 |
申请号 |
US19950576589 |
申请日期 |
1995.12.21 |
申请人 |
SAMSUNG DISPLAY DEVICES CO., LTD. |
发明人 |
KIM, SANG-KYUN;KIM, CHANG-SEOB;YANG, HAK-CHEOL |
分类号 |
H01J1/13;(IPC1-7):H01J29/98 |
主分类号 |
H01J1/13 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|