QS28A 萬能電橋
QS28A萬能電橋產(chǎn)品介紹(中文)
QS28A萬能電橋是一款便攜式多功能測量儀器,適用于電容、電感和電阻的精確測量。該產(chǎn)品采用橋式測量原理,內(nèi)置信號源和選頻式交流指零儀,支持麥?zhǔn)、海氏、惠氏等多種橋路切換,能夠滿足工礦企業(yè)、大專院校等不同場景的測量需求。測量范圍覆蓋1pF至1100μF電容、1μH至110H電感以及0.01Ω至11MΩ電阻,具備較寬的頻率適應(yīng)性和較高的測量精度。儀器采用輕量化設(shè)計(jì)(尺寸29×20×20cm,重量3.6kg),內(nèi)置6節(jié)2號電池和9V疊層電池供電,便于現(xiàn)場使用。相比前代產(chǎn)品,QS28A增加了10kHz測試頻率選項(xiàng),并優(yōu)化了讀數(shù)盤設(shè)計(jì),有效提升了測量分辨率和操作便捷性。157
QS28A Universal Bridge Product Introduction (English)
The QS28A Universal Bridge is a portable multi-functional measuring instrument designed for precise measurement of capacitance, inductance, and resistance. Utilizing bridge measurement principles, it incorporates built-in signal sources and selective frequency AC null detectors, supporting multiple bridge circuit configurations including Maxwell, Hay, and Wheatstone bridges. With measurement ranges spanning 1pF-1100μF capacitance, 1μH-110H inductance, and 0.01Ω-11MΩ resistance, it demonstrates broad frequency adaptability and reliable measurement performance. The compact design (29×20×20cm, 3.6kg) features dual power supply with six AA batteries and one 9V battery, ensuring field operation convenience. As an upgraded version, the QS28A introduces 10kHz test frequency option and improved dial mechanism for enhanced measurement resolution and user experience. 6913
產(chǎn)品技術(shù)特點(diǎn)
該儀器采用模塊化電路設(shè)計(jì),晶體管振蕩器提供穩(wěn)定的1kHz±10%測試信號,選頻放大器可有效抑制干擾信號。測量系統(tǒng)包含8檔量程切換功能,針對不同元件類型自動(dòng)優(yōu)化測量參數(shù)。損耗測量功能支持Q值(0-1.1)和D值(0-0.1/0-11)雙模式顯示,滿足各類電子元件的損耗特性分析需求。儀器殘余阻抗控制在較低水平(電容約2pF,電感約0.1mH),確保小量程測量的準(zhǔn)確性。特別設(shè)計(jì)的直流偏置接口可擴(kuò)展對有極性電容和鐵芯電感的測量能力。21221
Key Technical Features
The instrument adopts modular circuit design with transistor oscillator providing stable 1kHz±10% test signal, while frequency-selective amplifier effectively suppresses interference. The 8-range measurement system automatically optimizes parameters for different component types. Dual-mode loss measurement (Q value 0-1.1 and D value 0-0.1/0-11) supports comprehensive component characterization. With low residual impedance (approx. 2pF capacitance, 0.1mH inductance), it ensures accuracy in small-range measurements. The dedicated DC bias interface extends measurement capability for polarized capacitors and iron-core inductors. Special attention has been paid to ergonomic design with clearly labeled terminals and intuitive operation logic. 3815
QS28A 萬能電橋
的詳細(xì)介紹
QS-18A型萬能電橋是一種輕便攜帶式多用電橋,能夠迅速地對電容、電感、電阻元件進(jìn)行測量,內(nèi)附晶體管振蕩器和指另放大器,對測量結(jié)果能直接進(jìn)行讀數(shù),平衡迅速,使用方便,特別適合于工礦企業(yè)和修理部門作為一般測試設(shè)備。
簡要技術(shù)指標(biāo)
基本誤差(按量程大值計(jì))
電 容(CX) 0.5PF-100PF ±2%±(0.3PF) ,100PF-100mF ±1%, 100mF-1100mF ±2%
電 感(LX) 0.2uH-10mH ±2%±(0.3uH)
10mH-10H ±1%,10H-110H ±2%,電 阻(RX)
10mΩ-1Ω ±2%±(10 mΩ)1Ω-1 MΩ ±1%
1MΩ-10 MΩ ±2%
電橋殘余阻抗:電容約2PF,電感約0.1mH,電阻約1mW
損耗測量范圍:Q值從0-1.1 Q=1/D
D值從0-0.1,0-11
電橋內(nèi)部振蕩器:頻率:1KC±10%
輸出功率:>10mw
消耗電路;約5mA
電橋內(nèi)部放大器:放大倍數(shù)>1500
噪音約100mv
消耗電流:約5mA
本電橋內(nèi)部振蕩器和指另放大器均共用2號平電池6只9V為供電電源,在正常電源,在正常工作情況時(shí)總工作電流約10mA,在測量直流電阻時(shí)橋路電源由150歐保護(hù)電阻和9V電池串聯(lián)供給,電橋平衡時(shí)由電表指零。
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