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1. 发明授权

US5113144A Feed-back type emphasis circuit 失效
标题翻译：回馈式电动跑步机
公开(公告)号：US5113144A
公开(公告)日：1992-05-12
申请号：US601870
申请日：1990-10-22
申请人： Young W. Song
发明人： Young W. Song
IPC分类号： H04N5/922 , G11B20/06 , H03G5/22
CPC分类号： H03G5/22
摘要： A feed-back type emphasis circuit is disclosed which comprises an input amplifier, a low pass filter, an output amplifier and a feed-back amplifier. The input amplifier receives an input through its positive terminal, and the low pass filter receives the output of the input amplifier, and supplies its output to both the output amplifier and the feed-back amplifier. The output amplifier receives the output of the low pass filter and the input from the outside, while the feed-back amplifier receives both the output of the low pass filter and the input from the outside, with the polarities of its input terminals being shiftable correspondingly with the system specification of the set. The feedback amplifier includes a differential amplifier with adjustable gain and balance for two inputs, whereby the amount of emphasis can be adjusted and the circuit of the present invention can satisfy any specification, thus no new circuit is required when the specification is changed.
摘要翻译：公开了一种反馈式加重电路，其包括输入放大器，低通滤波器，输出放大器和反馈放大器。输入放大器通过其正极接收输入，低通滤波器接收输入放大器的输出，并将其输出提供给输出放大器和反馈放大器。输出放大器接收低通滤波器的输出和来自外部的输入，而反馈放大器接收低通滤波器的输出和来自外部的输入，其输入端的极性相应地移位与系统规格的集合。反馈放大器包括具有两个输入的可调增益和平衡的差分放大器，由此可以调整重点的数量，并且本发明的电路可以满足任何规格，因此当规格变化时不需要新的电路。

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