摘  要:電阻的測量方法有很多，除了常見的歐姆表法、伏安法外，還經(jīng)常用到等效法、半偏法、電橋法、兆歐表等等。各種測量方法都有其特點(diǎn)和適用場合，采用何種方法必須根據(jù)相應(yīng)的實(shí)驗(yàn)條件并遵循一些基本原則:如“安全性”、“精確性”、“方便性”并兼顧到“誤差小”、“用少”“耗電少”等，靈活選用。本文采用六種不同的方法測量電阻的阻值，并對其原理、應(yīng)用以及優(yōu)缺點(diǎn)作具體分析。得出替代法測量電阻試驗(yàn)方法簡單、結(jié)果準(zhǔn)確，通過電流表、電壓表的電流不影響被測電路電流的流量，不吸收被測電路的功率，故減小了測量誤差。

關(guān)鍵詞:電阻；直接測量；間接測量；誤差

ABSTRACT:There are many resistance measurement method, in addition to the common ohmmeter method, voltammetry, but also frequently used and so likewise, half deviation, the bridge method, megger and so on. A variety of measurement methods has its own characteristics and application of occasions, using what methods must be based on appropriate experimental conditions and follow some basic principles: such as "security", "accuracy", "convenience" and take into account the "small error" , "with less", "power consumption", etc., flexible choice. In this paper, six different methods to measure resistance value, and its principles, applications, and advantages and disadvantages for specific analysis. Measurement of resistance testing drawn alternative method is simple, accurate, through the ammeter, voltmeter, the current does not affect the measured circuit current flow, does not absorb the power of the circuit under test, it reduces the measurement error.

Keywords: Resistance; Direct Measurement; Indirect Measurement; Error