Mai yin wani Differential Voltmeter?

Mi ce Differential Voltmeter?

Takaitaccen: Amfani da differential voltmeter shine kuma yadda ake bincike tasirin voltage na maimakon kayayyakin da ba a sanu. Ana yi haka ta hanyar tushen tasirin voltage na maimakon kayayyakin da voltage na maimakon kayayyakin da a sanu.

Differential voltmeter ya bayar da zafi mai kyau. Yadda ake amfani da shi ya dace da yadda ake amfani da potentiometer, saboda haka ana kiran shi a matsayin potentiometer voltmeter.

Tsarin Differential Voltmeter
Tsarin diagram na differential voltmeter an samun ita a nan. An sa null meter a nan bayan voltage na maimakon kayayyakin da precision divider. An sa output na precision divider zuwa voltage na maimakon kayayyakin. Ana yanke precision divider har zuwa lokacin da null meter bai ba zero ba.

Idan an samu null deflection a nan, yana nufin cewa tasirin voltage na maimakon kayayyakin da voltage na maimakon kayayyakin sun fiye. A lokacin nan, ba voltage na maimakon kayayyakin ko voltage na maimakon kayayyakin ba ta ci gaba ga meter, kuma voltmeter ta ba suka cikin voltage na maimakon kayayyakin da suka ci gaba.

Null meter yana nuna hasashen farko da voltage na maimakon kayayyakin da voltage na maimakon kayayyakin. Don in tabbatar da farkon da ke faruwa, ana amfani da meter mai kyau.

Ana amfani da low-voltage DC standard source ko low-voltage Zener-controlled precision supply a matsayin reference voltage. High-voltage supplies ana amfani da su don bincike high voltages.

Abubuwan Differential Voltmeter
Ana da abubuwan differential voltmeter biyu:

• AC Differential Voltmeter

• DC Differential Voltmeter

AC Differential Voltmeter
AC differential voltmeter shine babban wata na DC instruments. An sa voltage na maimakon kayayyakin AC zuwa rectifier, wanda ya kawo AC voltage zuwa DC voltage da take da tsari. An sa DC voltage ta zuwa potentiometer don in tushen da voltage na maimakon kayayyakin. Tsarin diagram na AC differential voltmeter an samun ita a nan.

Voltage na maimakon kayayyakin AC an tushen da standard DC voltage. Idan tasirin su sun fiye, meter bai ba null deflection. Hakan ne yadda ake tabbatar da value na voltage na maimakon kayayyakin.

DC Differential Voltmeter
Voltage na maimakon kayayyakin DC ya zama input zuwa section na amplifier. An sa fraction na output voltage zuwa input voltage ta hanyar divider network. Wani muhimmin voltage na voltage divider an sa fractional input zuwa meter amplifier.

Meter an tsara shi don in bincike farkon da feedback voltage da reference voltage. Idan tasirin voltage na maimakon kayayyakin da reference voltage su ka zero, null meter bai ba null deflection ba.