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style="font-size:16px;">数字万用表由于具有测é‡ç²¾¼‹®ã€å–值方ä¾Ñ€åŠŸèƒ½é½å…¨ç­‰ä¼˜ç‚¹åQŒå› æ­¤æ·±å—æ— ¾U¿ç”µçˆ±å¥½è€…çš„‹Æ¢è¿Žã€æœ€æ™®é€šçš„æ•°å­—方用表一般具有电é˜ÀLµ‹é‡ã€é€šæ–­å£°å“‹‚€‹¹‹ã€äºŒæžç®¡æ­£å‘导通电压测é‡ã€‚交‹¹ç›´‹¹ç”µåŽ‹ç”µ‹¹æµ‹é‡ã€ä¸‰æžç®¡æ”‘Ö¤§å€æ•°åŠæ€§èƒ½‹¹‹é‡½{‰ã€‚有些数字万用表则增加了电容定w‡‹¹‹é‡ã€é¢‘率测é‡ã€æ¸©åº¦æµ‹é‡ã€æ•°æ®è®°å¿†åŠè¯­éŸ³æŠ¥æ•°½{‰åŠŸèƒ½ï¼Œ¾l™å®žé™…检‹¹‹å·¥ä½œå¸¦æ¥å¾ˆå¤§çš„æ–¹ä¾¿ã€‚但是,数字方用表由于ä‹É用ä¸å½“,在实际检‹¹‹æ—¶æ˜“造æˆè¡¨å†…å…ƒäšgæŸååQŒäñ”生故障ã€?/span><br /> <span style="font-size:16px;">数字万用表æŸå在大多数情况下是因‹¹‹é‡æ¡£ä½é”™è¯¯é€ æˆåQŒå¦‚在测é‡äº¤‹¹å¸‚甉|—¶åQŒæµ‹é‡æ¡£ä½é€‰æ‹©¾|®äºŽç”µé˜»æŒ¡ï¼Œ˜q™ç§æƒ…况下表½W”一旦接触市电,瞬间å›_¯é€ æˆä¸‡ç”¨è¡¨å†…部元件æŸå。因此,在ä‹É用万用表‹¹‹é‡å‰ä¸€å®šè¦å…ˆæ£€æŸ¥æµ‹é‡æ¡£ä½æ˜¯å¦æ­£¼‹®ã€‚在使用完毕åQŒå°†‹¹‹é‡é€‰æ‹©¾|®äºŽäº¤æµ750V或者直‹¹?000V处,˜q™æ ·åœ¨ä¸‹‹Æ¡æµ‹é‡æ—¶æ— è®ºè¯¯æµ‹ä»€ä¹ˆå‚敎ͼŒéƒ½ä¸ä¼šå¼•èµäh•°å­—万用表æŸå.</span><br /> <span style="font-size:16px;">有些数字万用表æŸå是ç”׃ºŽ‹¹‹é‡çš„电压电‹¹è¶…˜q‡é‡½E‹èŒƒå›´æ‰€é€ æˆçš?如在交æµ20V档佋¹‹é‡å¸‚电åQŒå¾ˆæ˜“引èµäh•°å­—ä¸‡ç”¨è¡¨äº¤æµæ”‘Ö¤§ç”µèµ\æŸååQŒä‹É万用表失åŽÖMº¤‹¹æµ‹é‡åŠŸèƒ½ã€‚åœ¨‹¹‹é‡ç›´æµç”µåŽ‹æ—Óž¼Œæ‰€‹¹‹ç”µåŽ‹è¶…å‡ºæµ‹é‡é‡½E‹ï¼ŒåŒæ ·æ˜“造æˆè¡¨å†…电èµ\故障。在‹¹‹é‡ç”‰|µæ—¶å¦‚果实际电‹¹å€ÆD¶…˜q‡é‡½E‹ï¼Œä¸€èˆ¬ä»…引è“v万用表内的ä¿é™©ä¸çƒ§æ–­åQŒä¸ä¼šé€ æˆå…¶å®ƒæŸå。所以在‹¹‹é‡ç”µåދ傿•°æ—Óž¼Œå¦‚æžœä¸çŸ¥é“所‹¹‹ç”µåŽ‹çš„å¤§è‡´èŒƒå›´åQŒåº”先把‹¹‹é‡æ¡£ç½®äºŽæœ€é«˜æ¡£åQŒé€šè¿‡‹¹‹é‡å…¶å€¼åŽå†æ¢æ¡£æµ‹é‡ï¼Œä»¥å¾—到比较精¼‹®çš„æ•°å€¹{€‚å¦‚æžœæ‰€è¦æµ‹é‡çš„ç”µåŽ‹æ•°å€ÆD¿œ­‘…出万用表所能测é‡çš„æœ€å¤§é‡½E‹ï¼Œåº”å¦é…高é˜ÀLµ‹é‡è¡¨½W”。如‹‚€‹¹‹é»‘白彩ç”늚„½W¬äºŒé˜Ïxžé«˜åŽ‹åŠèšç„¦é«˜åŽ‹ã€?/span><br /> <span 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