Transistor Characteristic Apparatus Experiment, Physics instrument, general laboratory equipment manufacturers.

Measurement Of Length By Photo Voltice Cell


Categories: , , ,
   

Measurement Of Length By Photo Voltice Cell

Measurement Of Length By Photo Diode

  • A photo diode consists of a p – n junction coated with translucent film .
  • The light (radiation) is allowed to fall upon its surface, across the junction.
  • The junction is made reverse – biased  with an e.m.f source.
  • A reverse current flows nearly linearly  with the intensity of light flux.
  • The reverse – biased current flows  through diode is linear function of light intensity, thus to measure  the light intensity level, this current is passed through a precision  fixed resistance R.
  • The reverse current devlope proportional voltage  across the R, which is than amplified to desired level by an amplifier.

Reviews

There are no reviews yet.

Be the first to review “Measurement Of Length By Photo Voltice Cell”

Your email address will not be published. Required fields are marked *