DC offset oscilloscope yog dab tsi?
DC offset oscilloscope yog dab tsi?

Video: DC offset oscilloscope yog dab tsi?

Video: DC offset oscilloscope yog dab tsi?
Video: DC and AC measurements with an oscilloscope 2024, Kaum ib hlis
Anonim

Analog offset . Analog offset , kuj hu DC offset , yog ib qho tseem ceeb feature muaj nyob rau ntau PicoScope oscilloscopes . Thaum siv kom raug, nws tuaj yeem muab koj rov qab qhov kev daws teeb meem uas yuav ua rau poob thaum ntsuas cov cim me me. Analog offset ntxiv a DC voltage rau lub input teeb liab.

Ib yam li ntawd, DC offset ua li cas?

DC offset yog ib tug txhais tau tias amplitude txav los ntawm zero. Hauv Audacity nws tuaj yeem pom raws li ib qho offset ntawm qhov ntsuas waveform deb ntawm qhov chaw zero point. DC offset yog ib lub peev xwm ntawm clicks, distortion thiab poob ntawm audiovolume.

Ib sab saum toj, txhais li cas los ntawm DC offset voltage? Cov tswv yim offset voltage () yog ib qho parameterdefining qhov txawv DC voltage yuav tsum tau nruab nrab ntawm cov inputs ntawm lub amplifier, tshwj xeeb tshaj yog ib qho kev ua haujlwm amplifier (op-amp), kom cov zis xoom (rau hluav taws xob amplifiers, 0volts nrog rau hauv av los yog ntawm qhov sib txawv outputs, nyob ntawm seb cov zis hom).

Ua li no, DC offset hauv amplifier yog dab tsi?

DC offset yog qhov tsis xav tau DC outputvoltage uas tshwm ntawm qhov tso zis ntawm op-amp ntxiv rau qhov xav tau teeb liab. Ua rau cov tswv yim offset voltage: input offset voltage tshwm sim vim qhov tsis sib xws ntawm ob lub transistors ntawm qhov sib txawv amplifier hauv theop-amp.

Dab tsi yog DC coupling hauv oscilloscope?

DC los yog AC kev sib txuas on ib oscilloscope cia tus kws tshaj lij lossis tus kws tshaj lij los xaiv qhov feem ntawm lub teeb liab s / nws xav saib. DC khub niam txiv tag nrho cov teeb liab mus rau qhov screen, nrog rau qhov zoo ornegative voltages. AC kev sib txuas yuav thaiv qhov steadyvoltage, tso cai rau koj los soj ntsuam cov kev hloov pauv me me.

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