Author Topic: How does this circuit work/single phase gate motor pcb board  (Read 495 times)

0 Members and 1 Guest are viewing this topic.

Offline WiredSmartTopic starter

  • Contributor
  • Posts: 10
  • Country: za
How does this circuit work/single phase gate motor pcb board
« on: March 05, 2023, 07:32:14 am »
I stripped down a gate motor and found this chip/circuit board between a cog that was driven by shaft.  I suspect  the chip has something to do with either counting the revolutions of the motor or the distance the gate travels . The circuit itself appears simple but could someone provide a better explanation of how the chip electronics actually works when the cog turns .
 

Online ataradov

  • Super Contributor
  • ***
  • Posts: 11905
  • Country: us
    • Personal site
Re: How does this circuit work/single phase gate motor pcb board
« Reply #1 on: March 05, 2023, 08:06:41 am »
This is photo interrupter. Just a pair of IR LED and a photodiode/phototransistor. There is no logic here, both LED and the photodiode just go to the connector.

LED is constantly on and the beam interruption by the shutter may be detected by the diode.

Here is explanation https://www.rohm.com/electronics-basics/photointerrupters/what-is-a-photointerrupter
Alex
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf