DEVICE FOR CHANGING LEVEL OF ANALOG SIGNAL

专利名称：DEVICE FOR CHANGING LEVEL OF ANALOG

SIGNAL

发明人：KOSKINEN, Martti申请号：EP97913214.0申请日：19971124公开号：EP0940002A1公开日：19990908

摘要：The present invention relates to a kind of devices, for improving the analogvoltage of degree. In the present invention, the coupling of the pulse signal of pulsefrequency or pulse width is modulated by circuit (T1) high-frequency chopper oftransformer simulates alternating voltage signal (grape wine) by amplitude low

frequency. The transformer of the secondary windings of transition joint (12) is connectedto the device of the output of (M2) by coil (L1). Negative (D5), is the end that positive (D4)rectifier cell is connected to secondary windings (M2) respectively. The analog inputsignal of the connection positive half cycle of one rectifier cell, and another is in the halfperiod of negative. Therefore the equipment provided at the output of waveformmodelling voltage follows waveform modelling input signal, and the voltage amplitudeof peak-to-peak amplitude output signal is approximately equal to across secondary coil.Distorted signals can reduce feedback.

申请人：NOKIA TELECOMMUNICATIONS OY

地址：Keilalahdentie 4 02150 Espoo FI

国籍：FI

代理机构：Äkräs, Tapio Juhani, et al

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