| 摘要 |
PROBLEM TO BE SOLVED: To provide a deflection amplifying circuit capable of dealing with a high-speed image display device. SOLUTION: Two amplifiers 201, 202 are provided, the amplifiers comprise a plurality of constant current sources 231, 232 connected in parallel and at both ends of these constant current sources, change-over switches 241, 242, 251, 252 are provided to which auxiliary power sources 261, 262, 271, 272 and first transistors 211, 212, 221, 222 are connected so as to be switched. The auxiliary power sources are connected in series, a midpoint thereof being output. the first transistors are connected to a positive main power source 3 and second transistors are connected to a negative main power source 4, respectively, to configure the amplifiers. Resistors 5, 6 are connected to the output at the midpoint of the positive and negative auxiliary power sources, one first transistor is connected with another second transistor, and another first transistor is connected with the one first transistor, so that currents flowing to resistors can be canceled. COPYRIGHT: (C)2009,JPO&INPIT |
