109. Setting Hysteresis on a Non-Inverting Comparator

A simple way to create hysteresis in a non-inverting comparator

[@CraigHollabaugh]

Funny, I've been doing circuit design for 40+ years and just learned about this technique a month ago. Thanks for the video.

[@SuburbanDon]

Very good. You're a good teacher.

[@biswajit681]

Excellent!!!

[@aerofart]

This new format is okay, but I prefer the more fluid, more human experience of your hand-written presentations. Call me strange (or overly observant), but I find the lag and jitter of the input device you’re using when screen writing is distracting. Maybe consider a tablet instead of a mouse?In any case, I always look forward to your presentations and appreciate the lengths you go to for the benefit of the community. Thanks, Offset!

[@MagivaIT]

i have a question, maybe its a silly question. if the circuit is monitoring its own power. lets say the voltage reference is a equal divider (5v in, 2.5v ref). if the voltage decreases, the reference voltage will also decrease. eg, 3v in means 1.5v ref as far as i understand this video, the reference voltage calculation is based on a stable input voltage

[@dontoro4579]

The reference voltage depends on the In voltage as you said, but it isn't a division by 2, the reference voltage must be a lower voltage than the in one, like Vin= 3V Vref = 2V, for a lineal operation of the comparator . If you do a circuit with a Vin = 2V and Vref= 5V (for example), your comparator will work in no-lineal way, it will gives you in Output voltage the alimentation, Vcc+ or Vcc- depending were is the realimentation . I wish I answer your question, my english is not good at all :D.

[@dontoro4579]

Oh sorry I don't understad your qstion, yes, it will decrease in this case , bc he power the in voltage with 5V and then he divided the voltaje with 2 resistors with te same value and takes half voltage of the power(Vin).

[@MagivaIT]

so my question is how do i monitor its own voltage as any reference voltage will change accordingly

[@davidluther3955]

PLEASE WRITE THINGS DOWNS WE TO DEPENDENT ON COMPUTORS TODAY.

[@stavroulasifaki7394]

what is the Voh and Vol? How do i choose their values?

[@CircuitShepherd]

👍

[@campbellmorrison8540]

Excellent explanation but I prefer you writing on paper, for the life of me I don't know why we are pushing our kids to write everything on a PC and then complain about their illegible hand writing :)

[@TheOffsetVolt]

Thanks for the feedback. So far, the paper and pencil voters are ahead!

[@davidluther3955]

I AGREE,I THINK IT IS BECAUSE THEY USE COMPUTORS TO WRITE THINGS.