| 摘要 |
PURPOSE:To make two pulse signals which are in mutually negative-phase relation coincident in timing and waveform during inversion and to obtain two pulse signals which vary symmetrically about a specific level, by providing a two- phase pulse signal generating circuit with a correcting signal circuit. CONSTITUTION:Resistances 31 and 32 having an equal value are connected to output sides of buffer circuits 28 and 29 of the two-phase pulse signal generating circuit 11 in series, and the difference signal DF between a positive and a negative phase signal is outputted to the middle point P6 of the connection. This signal DF is inverted by the correcting signal circuit 33 and applied to the base of a transistor TR34 for correction to control voltages applied to load resistances 26 and 27 of a differential amplifying circuit 35. Consequently, positive- phase and negative-phase pulses phi1 and phi2 supplied from the circuit 11 to the diode bridge circuit 12 of a sample holding circuit 1 are controlled to a reference voltage value all the time. Thus, the two pulse signals are made coincident in timing and waveform during inversion to hold two pulses which vary symmetrically about the specific level by a sample holding capacitor 15. |
