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Can someone tell me what does R6 in this LM358 circuit diagram do?

junki
in Off-topic

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Can someone tell me what does R6 in this LM358 circuit diagram do?

 

image.png.787e121c1189e7885c808411afca1b2c.png

I guess R6 is part of the square wave generator that forms the b diagram. R6 accelerates the transition of the output state of the op amp through positive feedback to cross the indeterminate state, and acts as a Schmitt trigger. Guys do you agree?

You can plug the circuit in some simulator (like falstad.com, LTSpice or similar) to check what the parameters do. 

I did that for you here: https://tinyurl.com/yemxbzmt  As you guessed R6 in combination with LM358 B does work as a schmitt trigger.

 

See also this circuit with just the B half. https://tinyurl.com/yehg4ooh

 

The exact size of R6 probably does not matter all that much.

    • 1
    • Author
    12 hours ago, Heisath said:

    You can plug the circuit in some simulator (like falstad.com, LTSpice or similar) to check what the parameters do. 

    I did that for you here: https://tinyurl.com/yemxbzmt  As you guessed R6 in combination with LM358 B does work as a schmitt trigger.

     

    See also this circuit with just the B half. https://tinyurl.com/yehg4ooh

     

    The exact size of R6 probably does not matter all that much.

    Thank you for leaving this suggestion as I can try to plug the circuit in some simulator!!!

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