| 摘要 |
PURPOSE:To prevent a malfunction of a control part due to chattering of a switch, and also to shorten an operating time of a remote-control device, by providing an integration circuit which integrates an output signal of the switch, and does not integrate an output signal of a receiver. CONSTITUTION:In case of a normal state, an FET1 does not conduct, an FET2 conducts, a point (a) is set to ''0''V, and a switch 3 is opened. Therefore, voltage of the lower end of a capacitor 22 is ''0''V, and voltage across it is a value V1 obtained by voltage-dividing the supply voltage Vcc by resistors 19, 20. When the switch 3 is operated in this state, its output voltage is integrated, and after that, is outputted to a transistor 9. Also, in case when pulselike voltage has been outputted from an output part A in a normal state, a time constant decided by values of the resistors 19, 20 and the capacitor 22 is selected in advance larger than duration of a pulse, therefore, the output voltage from the point (a) is superposed on said V1 and is outputted to the transistor 9. In this way, the output voltage from the output part A is not integrated, even if a pulse of short duration is outputted, the circuit of the following stage and thereafter is operated exactly. |
