| 摘要 |
<p>PURPOSE:To easily obtain a pseudo differentiation circuit making a pulse width automatically equal to a prescribed division of a bit period by allowing a control means to generate an integration drive signal depending on an output signal of a 2nd signal waveform shaping means. CONSTITUTION:A 2nd pseudo differentiation 14 and a 2nd full wave rectifier 18 connected in series form the 2nd signal waveform shaping device converting a waveform F into a waveform G being consecutive pulses each having a width d'. In order to surely match the pulse width (d) of the waveform C and the pulse width d' of the waveform G, the components and the circuit arrangement are made identical to the 1st and 2nd pseudo differentiation devices 12, 14 and the 1st and 2nd full wave rectifiers 16, 18 and the identical control voltage signal is fed to each pseudo differentiation device. Thus, the output waveform G is sent to a feedback control circuit 60 through a line 28 and the signal is used to drive a signal source circuit such as a bipolar current source circuit 38.</p> |
