ELECTRONIC TIMING CIRCUIT

摘要

1485726 Delay circuit SEIKO KOKI KK 30 June 1975 [22 July 1974] 27559/75 Heading H3T A circuit, Fig. 2, in which a relay R L is energized when a contact SW 1 is closed and is de-energized a predetermined period after a contact SW 2 is opened, the period being that taken by a capacitor C 0 to charge sufficiently via a resistor R to switch a Schmitt trigger T 1 , T 2 , is so arranged that a jittery closure of the contact SW 1 will not cause a jittery energization of the relay, since at the instant when the contact SW 1 is closed it will be effectively shunted by the capacitor C 0 . Thus, the capacitor C 0 performs both a timing function and also a jitter preventing function.