• on Miscellaneous Electronics
  • Published in issue 7/2000 on page 0
About the article

Analogue Optical Coupler

It is sometimes necessary to make an electrically isolated connection in a circuit. An optocoupler is usually the key component in such a situation. In most optocouplers, a single lightemitting diode (transmitter) and a single photodiode (receiver) are optically coupled inside the package. This solution is satisfactory for transferring digital levels (such as the control signals for a thyristor), since only two logical states (LED on or LED off) have to be transferred. An exact (analogue) coupling is thus not necessary.
Downloading of this magazine article is reserved for Elektor Members only.
Already a member? click here to log in.
Loading comments...