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JO401演示電表是根據(jù)新的教學大綱，為普及九年制義務教育而設計的新型演示電表，可用于測量直流電流、直流電壓、也可作檢流計用，是教學中研究磁電系電表結(jié)構(gòu)的直觀教具，該表有良好的直觀性，高的可見度，操作方便，結(jié)構(gòu)合理，采用優(yōu)質(zhì)磁鋼的內(nèi)磁結(jié)構(gòu)。使儀表的磁性穩(wěn)定，靈敏度高、重量輕、攜帶方便，表頭采用硅二級管保護電路，可防止過載電流損壞電表，而且具有價廉、物美、質(zhì)好的特點。 The JO401 Demonstrating Galvanometer is an ideal visual aid specifically esigned according to the devised educatble schema for the 9-years compulsory educational plan .besides working as galvanometer,it is suitable for measuring educational plan.provides such excellence as magnetic stabiliry,high accuit which can prevent damages from overloading .other excellence can be listed as following;visual convenience,openness easily to control, excellent arrangement high and cheap in price etc.

JO403高中演示電表為指針或內(nèi)磁結(jié)構(gòu)，及測量線路等部分所組成，共有十四個測量檔位，使用方便，性能穩(wěn)定，安全可靠，供學生教學演示實驗中作檢流計測量微量直流電流及直流電壓，直流電阻等演示項目. The model JO402 is comprised of inner magnetic structure and measuring Circuit It has such excellence as esily for usage ,stabriitym safety, and visual for demonstration.It provides14measuring ranges and may serve as galvanometer or measuring instrument of DCA DCV ACA and ACV ?

1. 測量范圍：Measuring Range:DCA:-500uA-0-+500uA 0-10-100mA-1-5A DCV:0-5-10V ACA:0-10-100mA-1-5AACV:0-10-50-250V 2.基本誤差Basic Deviation:±2.5% 3.阻尼時間　Damp time ≤65 4.重量　　Weight:1kg 5.外形尺寸：Dimensions:115×270×300mm 　　J0402 Demonstrating Galvanometer for Middle school(Ammeter &Voltmeter) 　　高中演示電表為指針式內(nèi)磁結(jié)構(gòu)，及其測量電路等部份所組成。它具有使用方便，性能穩(wěn)定、安全可靠、演示直觀等優(yōu)點。它共有十四檔測量量程，供教學演示實驗中作檢流計，及測量直流電流、直流電壓、交流電流、交流電壓等之用。 　　The model JO402 is comprised of inner magnet ic structure and measuring Circuit. It has such excellence as easily for usage, stabriity, safety,and visual for demonstration. It provides14 measuring ranges and may serve as galvanometer or measuring instrument of DCA,DVv,ACA and ACV ?

產(chǎn)品詳細介紹 體積小、質(zhì)量輕、操作簡單 耗電省、性價比高 適應初、高中教改實驗要求

產(chǎn)品詳細介紹一、低成本經(jīng)濟型液位開關(guān)LLC200A3SH 詳細說明： （1）響應速度快，（2）10mA驅(qū)動電流，光電晶體管開關(guān)輸出。（3）工作溫度：-20～85度，M12螺紋（4）引線為250mm 24AWG，8mm 鍍錫 二、液位開關(guān)LLC200A3SH典型應用： 溫泉池，漏液檢測，自動販賣飲料機，食品與飲料機，醫(yī)療，壓縮機，打印機，水泵，家用電器，油位監(jiān)控，HVAC，機床，高低液位開關(guān)，水位控制，汽車電子。

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