Author Topic: Function of a little dot on bobbin of a flyback transformer  (Read 662 times)

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Offline khatusTopic starter

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Function of a little dot on bobbin of a flyback transformer
« on: August 12, 2019, 05:04:41 pm »
Hello guys i want to know function of this dot on bobbin of a flyback transformer.I guess it is for dot convention of transformer



when i remove first layer of sticky tape i have found it was wound in clockwise direction.




« Last Edit: August 12, 2019, 05:10:35 pm by khatus »
 

Offline Domagoj T

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Re: Function of a little dot on bobbin of a flyback transformer
« Reply #1 on: August 12, 2019, 05:20:01 pm »
Marking for pin 1.
 

Online Ian.M

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Re: Function of a little dot on bobbin of a flyback transformer
« Reply #2 on: August 12, 2019, 06:49:34 pm »
It wouldn't need a peg like that just to visually *identify* pin 1, so it must be intended to operate a sensor or engage with a hole in a jig for (semi) automated assembly to ensure the bobbin orientation is correct with respect to the coil winding machine, or for part orientation during (semi) automated board stuffing.
 
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