| 释义 |
voltmetervolt‧me‧ter /ˈvəʊltˌmiːtə $ ˈvoʊltˌmiːtər/ noun [countable]   - Voltmeter readings around IC2 should produce the following results, assuming that the negative lead of the voltmeter is connected to 0V.
- Calibration Select one amplifier for calibration and connect a voltmeter to the test point at the first stage output.
- Ideally, any alternating voltmeter should possess infinite impedance and any a.c. meter negligible impedance.
- Strictly speaking, the voltmeter should give true r.m.s. measurement.
- The r.m.s. current,, may be found by measuring the r.m.s. potential difference with a suitable voltmeter from which.
- This will change the voltage at any porthole whose current line is affected, and the appropriate voltmeter will register the fact.
► Electricityammeter, nounamp, nounanode, nounblow, verbcathode, nouncircuit, nouncontact, nouncurrent, noundiode, noundirect current, noundischarge, noundynamo, nounelectricity, nounelectro-, prefixelectromagnet, nounelectromagnetic, adjectiveelectromagnetism, nounflat, adjectiveflex, nounimpulse, nounincandescent, adjectiveinduction, nounJ, kilowatt, nounkW, LED, nounlight-emitting diode, nounmagnetic, adjectivemagnetic field, nounmagnetic tape, nounmagnetism, nounmagnetize, verbohm, nounoscillate, verboscillator, nounoverload, verbplasma, nounpolarity, nounpole, nounpositive, adjectivepotential, nounradio wave, nounrepel, verbrepulsion, nounresistance, nounresistor, nounsemiconductor, nounshock, nounsolid-state, adjectivestatic, nounstatic electricity, nounsubatomic, adjectivesubstation, nounsuperconductivity, nounsuperconductor, nountransmission, nountransmit, verbvoltmeter, noun an instrument for measuring voltage |