| 摘要 |
PURPOSE:To extend the apparent time constant by allowing the titled integration circuit to generate a step wave when a sawtooth wave reaches a setting value, restoring the sawtooth wave to the initial value and adding the step wave and the sawtooth wave. CONSTITUTION:When an input Vin reaches an H level, the charging of a capacitor 26 is started and a voltage Vc rises. In bringing an output Q of an RS'-FF23 to '0' level, a switch 24 is thrown to the position (a) and an adder 25 output a difference Vsw between a voltage Vc and a reference voltage source 28 as it is. When the output Vsw reaches a potential V1 of the power supply 32, the output Q of the RS-FF23 goes to 'H' to invert the output of a multiplier 11, then the capacitor 26 is discharged, the switch 24 is thrown to the position (b) and the inverted output of the differential amplifier 27 is fed to the adder 25. As a result, the adder 25 adds the output Q of the RS-FF23 and the inverted output of the difference between the potential Vc and the potential of the power supply 28 thereby outputting a further increased output voltage Vout. |
