FMQK交直流四端低阻箱

產(chǎn)品概述

FMQK交直流四端低阻箱是一種多功能可調(diào)電阻設(shè)備，適用于交直流電路中的精密電阻調(diào)節(jié)和電橋橋臂應(yīng)用。該產(chǎn)品采用旋轉(zhuǎn)式開關(guān)設(shè)計，支持多檔位電阻調(diào)節(jié)，能夠滿足教學(xué)、科研及工業(yè)測試場景的需求。其核心特點是四端測量結(jié)構(gòu)，可有效減少接觸電阻對測量精度的影響，適合低阻值環(huán)境下的高精度實驗。產(chǎn)品設(shè)計注重穩(wěn)定性和耐用性，接觸部件采用微彈簧壓緊技術(shù)，長期使用后仍能保持較低的接觸電阻變化。1321

技術(shù)特點

FMQK交直流四端低阻箱提供寬范圍的電阻調(diào)節(jié)能力，典型型號的示值范圍為0～1111.110Ω，最小步進值可達0.0001Ω，準(zhǔn)確度等級為0.5%。產(chǎn)品支持多組聯(lián)動調(diào)節(jié)，例如二組獨立比率設(shè)計（如2×1/10/100Ω），便于自組單/雙臂電橋或電位差計實驗。電阻元件采用高穩(wěn)定性材料，絕緣支座選用聚風(fēng)塑料，確保良好的電氣隔離性能。此外，設(shè)備內(nèi)置十字分割架結(jié)構(gòu)技術(shù)，優(yōu)化了線對間的平衡對稱性，進一步提升測量一致性。42028

應(yīng)用場景

該設(shè)備廣泛應(yīng)用于高校物理與電工實驗、科研單位電學(xué)參數(shù)驗證以及工業(yè)領(lǐng)域的電氣檢測。例如，在教學(xué)中可用于自組交流電橋、暫態(tài)電路分析等實驗；在工業(yè)場景中，可作為校準(zhǔn)數(shù)字歐姆表或測試低阻器件的輔助工具。其四端設(shè)計特別適合需要排除引線電阻干擾的場合，如電池內(nèi)阻測量或微小電阻元件測試。產(chǎn)品操作簡便，通過旋轉(zhuǎn)開關(guān)即可快速設(shè)定目標(biāo)阻值，同時支持多路輸出，適配不同型號的測試儀表。61830

使用與維護

使用前建議旋轉(zhuǎn)開關(guān)數(shù)次以確保接觸穩(wěn)定，連接導(dǎo)線需牢固且不超過標(biāo)稱功率（如0.25W）。存儲環(huán)境建議為溫度10～30℃、濕度低于75%的無腐蝕性氣體場所。設(shè)備配備說明書和合格證，用戶需避免錯誤接線導(dǎo)致?lián)p壞。長期不使用時，應(yīng)定期通電檢測以保持性能。1711

Product Overview

The FMQK AC/DC Four-Terminal Low Resistance Box is a versatile adjustable resistor device designed for precise resistance regulation in both AC and DC circuits, as well as for bridge arm applications. Featuring a rotary switch mechanism, it supports multi-range resistance adjustment, catering to educational, research, and industrial testing needs. Its four-terminal measurement structure minimizes contact resistance interference, making it ideal for high-precision experiments in low-resistance environments. The product emphasizes stability and durability, with contact components utilizing micro-spring compression technology to maintain consistent performance over time.1321

Technical Features

With a typical resistance range of 0～1111.110Ω and a minimal step increment of 0.0001Ω, the FMQK achieves an accuracy class of 0.5%. It offers flexible configurations such as dual independent ratio settings (e.g., 2×1/10/100Ω), facilitating experiments like self-assembled single/double bridges or potentiometers. High-stability materials are used for resistive elements, while insulated supports made of polypropylene ensure excellent electrical isolation. The cross-segmentation frame technology enhances balance between wire pairs, improving measurement consistency.42028

Applications

This device is widely employed in university physics and electrical engineering labs, research institutes for parameter validation, and industrial electrical testing. For instance, it serves in teaching experiments like AC bridge assembly and transient circuit analysis, or in industrial settings for calibrating digital ohmmeters and testing low-resistance components. The four-terminal design is particularly effective in scenarios requiring elimination of lead resistance interference, such as battery internal resistance measurement. Its user-friendly rotary switches enable quick setup, and multi-channel output compatibility adapts to various test instruments.61830

Operation & Maintenance

Prior to use, rotate switches several times to stabilize contacts, and ensure connections are secure without exceeding rated power (e.g., 0.25W). Store in environments with 10～30℃ temperature and <75% humidity, free from corrosive gases. The package includes an instruction manual and certification, and users should avoid incorrect wiring to prevent damage. Periodic performance checks during prolonged storage are recommended.1711

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