JPH0175873U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1: A schematic block diagram of a tester with a switch checker according to the present invention, Figure 2: External front view of the tester, Figure 3: Block circuit diagram of the switch checker function section of the tester, Figure 4: FIG. 3 is a timing chart showing the operating state of each part in FIG. In the drawings, 1: tester with switch checker, 2: tester function section, 3: switch checker function section, 4: switching means, 6: contact resistance detection means, 7: judgment means, 8: notification means, S: Switch to be determined, Rp: contact resistance value, Ro: reference resistance value, T
s: fixed time.

Claims (1)

[Claims for Utility Model Registration] (1) A tester with a switch checker, characterized in that it is equipped with the following functional sections and each functional section can be selectively used by a switching means. (a) a tester function section; (b) contact resistance detection means for detecting a contact resistance value between the contacts by applying a voltage and/or current between the contacts of the switch to be determined in accordance with the usage conditions of the switch; , a determining means for comparing the contact resistance value with a preset reference resistance value to determine pass/fail;
A switch checker function section comprising a notification means for notifying a determination result of the determination means. (2) The contact resistance detection means detects voltage and/or
A tester with a switch checker according to claim 1 of the utility model registration, characterized in that the time for applying the current is limited to a fixed time. (3) The tester with a switch checker according to claim 1 or 2 of the utility model registration claim, wherein the determining means performs the determination in the middle of the predetermined time.