LM339 Quad Comparator IC with open collector outputs basic demo circuit schematic by Electronzap

List of my videos / electronzap
www.amazon.com/shop/electronz... As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you.
/ electronzap
electronzap.com/
/ electronicsstudy
#Electronics #Howto #diy

[@blackturtleshow]

Excellent tutorial/demonstration!

[@Electronzap]

Thanks!

[@TOMTOM-nh3nl]

Thank You

[@HazeAnderson]

Somewhere I heard that op amps are essentially comparators that do a poor job of comparing, and comparators are op amps specifically designed to do that job. I think Dave Jones said it ... something like that. 😄

[@Electronzap]

Yeah I read something similar to that early on when I was relearning electronics. And heard it mentioned here and there ever since. I think the Art of Electronics covers the differences in great detail.

[@Harry001by7]

Hi, using lm311p, on breadboard the output always stays at active low (0.65v). Not getting active high, the output is in the off state, regardless of the differential input. Any help ?
MC3302P works same as lm339 ?, any modifications needed?

[@Electronzap]

TI datasheet says lm311 is an open collector comparator. So you'll need to add a pull up resistor that provides a high output when the IC isn't providing a low output. That's all I can think of.

[@simantosd]

Can I use 12v on this ic?

[@Electronzap]

Texas Instrument's datasheet says 36V max 38V if there is a B at the end of the part number. So 12V should be OK, but you should consult the datasheet for all of it's power limitations.