OPTOCOUPLER CIRCUIT diagram!

ali ghafoor · May 14, 2011

i need the simplest U-shaped optocoupler circuit diagram...i am to meaasure the speed(RPM) of a dc-fan controlled by a miocrocontroller....plz help me out!!

KJ6EAD · May 14, 2011

Is this what you need? Learning to Use an Optocoupler or Optoisolator.

Or did you mean something like this: Optocoupler with slot for light block, shown with mechanical block (light barrier) 05-06-09 - Semiconductors and electron tubes - Electrical engineering (DIN EN 60617) - Symbols - Services - Festo Didactic or this: **broken link removed**?

It sounds like you need an incremental optical encoder. This is a search term hint.

ark5230 · May 16, 2011

It looks you need a light beam source and a light detector with response time consistent with your speed measuring arrangements. Perhaps a microcontroller based system should serve the purpose.

zuisti · May 16, 2011

Do you want only to measure the speed or also to control it?

OPTOCOUPLER CIRCUIT diagram!

ali ghafoor

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KJ6EAD

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ark5230

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zuisti

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OPTOCOUPLER CIRCUIT diagram!

ali ghafoor

Member level 4

KJ6EAD

Advanced Member level 3

ark5230

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zuisti

Advanced Member level 1

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