Me kana Electronic Voltmeter?

Zanen da Electronic Voltmeter?

Takardun

Electronic voltmeter shine voltmeter mai yi amfani da amplifier don taimaka wajen inganta hankalin. Yana iya cikin AC da kuma DC devices. Saboda hankalin mafi yawa, electronic voltmeter na baka bayanai masu dacewa.

Moving - coil voltmeter ya fi jin wasu voltages mafi yawa, amma electronic voltmeter ta sake gane wannan matsalolin. Electronic voltmeter na da hankalin mafi yawa, wanda ke taimaka ake tabbatar da alamomin da suka da yawan shiga da ma'ana, kuma ta baki ake tabbatar da bayanai. Hankalin mafi yawa yana nufin cewa circuit yana ba da abinda game da supply.

Electronic voltmeters sun amfani da transistors ko vacuum tubes. Transistor - type voltmeter (TVM) na da resistance, wanda ke hada shi a cikin cikakken current. Amma, vacuum voltmeter (VVM) na da resistance mafi yawa, wanda ke taimaka shi a cikin cikakken current.

Yadda Ake Yi Da Electronic Voltmeter

Yadda voltage da aka canza ya shafi shi ne da yadda pointer ya shafi. Pointer ya sami a scale mai karatu, kuma yadda pointer ya shafi yana nuna yadda input voltage ya shafi.

Moving - coil voltmeter na biyo damar power daga circuit da aka canza, wanda ke iya haɗaƙe abubuwan da aka bayyana. Electronic voltmeter ta sake gane wannan matsalolin.

A cikin electronic voltmeter, pointer ya shafi saboda biyon power daga auxiliary amplifier circuit. Output voltages of the amplifier circuit ya shafukan voltage of the test circuit. Saboda biyon power mafi yawa ta shiga deflector, meter ta baka bayanai masu dacewa.

Abubuwa Daban-Daban Na Electronic Voltmeters

Electronic voltmeters sun ci gaba a biyu na abubuwa daban-daban:

• Analog Electronic Voltmeter

• Digital Electronic Voltmeter

Analog Electronic Voltmeter

Analog electronic voltmeter shine instrument mai canza voltage wanda ke baka output through the deflection of a pointer on a calibrated scale. It features high circuit impedance and employs an electronic amplifier to regulate the input signals. This type of voltmeter can be further divided into AC and DC analog electronic voltmeters.

Digital Electronic Voltmeter

A digital electronic voltmeter shine voltmeter mai canza voltage wanda ke baka output reading a kan form of a numerical value. Digital electronic instruments minimize human and parallax errors since the reading is directly displayed in numeric form.

Fadada Electronic Voltmeter

Electronic voltmeter na baka fadada masu yawa, kamar yadda ake bayyana:

• Detection of Low - level Signals: The electronic voltmeter incorporates an amplifier, which helps avoid load errors. This amplifier can detect extremely small signals that generate a current of around 50μA. The ability to detect low - level signals is crucial for accurately determining the measured value.

• Low Power Consumption: Electronic voltmeters utilize vacuum tubes and transistors with amplifying properties. They draw power from an auxiliary source for pointer deflection, while the voltage being measured controls the deflection of the sensing element. As a result, the circuit of the electronic voltmeter consumes very little power.

• High - Frequency Range: Thanks to the use of transistors, the operation of the electronic voltmeter is not restricted by frequency range. In addition to voltage, it can measure signals with both very high and very low frequencies.

• Power Measurement Requirement: The electronic voltmeter measures power only when the circuit is closed, meaning when current is flowing through the meter.