 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
QL 数据表(PDF) 15 Page - Panasonic Semiconductor |
|
|
|||||||||||||||||||||||||||||
QL 数据表(HTML) 15 Page - Panasonic Semiconductor |
|
|
15 / 21 page  9 1. The ON/OFF circuit for the guidance load may suffer contact damage due to surges or inrushes when the power is turned either ON or OFF. Consequently, insertion of a protective circuit as per the following diagram is recommended, in order to protect the contacts. 2. Do not connect either irregular poles or power sources to a switch contact. Power connection examples (irregular pole connection) 3. Avoid circuits where power may find a way between the contact points (as this may cause welding.) PROTECTION CIRCUIT Circuit Cautions for use (1) r must be a minimum of 10 Ω; (2) When using AC power: Q Impossible when R impedance is large. W Possible when c, r impedance is suffi- ciently small com- pared with R imped- ance. Can be used with both AC and DC as appro- priate. r ~ R C: 0.1 µF Limit switch contact Limit switch contact (1) Dedicated DC use. (2) AC is impossible Limit switch contact Can be used with both AC and DC as appro- priate. Limit switch contact c r R c r R Diode R Varistor ZNR R Example of unsuitable power connec- tion (abnormal power connection) NO GOOD Load L Load Load connected to same pole GOOD Load L Load Load L AC DC Risk of AC and DC being mixed. NO GOOD Load L 4. Using electronic switch circuits (low power, low current) 1) Bouncing and chattering are gener- ated due to collision between the con- tacts when the limit switch is switching between them, and this sometimes causes such problems as white noises and error pulses in both the electronic circuit and the reverberation equip- ment. 2) If the generation of bouncing and chattering becomes a problem, it is necessary to consider installing a CR circuit or other absorption circuit given the circuit design. 3) This is particularly necessary when high contact reliability is needed, and is unsuitable for silver contact switch- es. Switches with gold contacts pos- sess excellent performance. L 100V 200V NO GOOD CAUTIONS FOR USE |
|
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
