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1. 发明授权

US5311118A Ripple elimination in a frequency-to-voltage converter for a cross-coil meter 失效
标题翻译：用于交叉线圈仪的频率 - 电压转换器中的波纹消除
公开(公告)号：US5311118A
公开(公告)日：1994-05-10
申请号：US760064
申请日：1991-09-13
申请人： Kazuyuki Fukuda
发明人： Kazuyuki Fukuda
IPC分类号： G01P3/48 , G01R23/00 , H03K9/06 , G01R5/14 , G01R23/06 , H03K5/19 , G01R3/481
CPC分类号： H03K9/06 , G01R23/00
摘要： A frequency-to-voltage converter comprises a pulse generator, an integrator, an inverting amplifier, and a superimposing circuit. The pulse generator generates a pulse signal having a predetermined width. The integrator integrates and outputs the pulse signal. The inverting amplifier reverses the ripple component of the output of the integrator, outputting the reversed ripple component. The superimposing circuit superimposes the reversed ripple component on the output of the integrator. An automobile meter according to this invention comprises a frequency-to-voltage converter, a plurality of driving signal generators, and a plurality of pointer driving coils. The drive signal generators generate driving signals having values according to the output value of the integrator, applying the drive signals to pointer driving coils.
摘要翻译：频率 - 电压转换器包括脉冲发生器，积分器，反相放大器和叠加电路。脉冲发生器产生具有预定宽度的脉冲信号。积分器积分并输出脉冲信号。反相放大器反转积分器输出的纹波分量，输出反向纹波分量。叠加电路将反向纹波分量叠加在积分器的输出上。根据本发明的汽车仪表包括频率 - 电压转换器，多个驱动信号发生器和多个指针驱动线圈。驱动信号发生器产生具有根据积分器的输出值的值的驱动信号，将驱动信号施加到指针驱动线圈。

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