I need to design a two-stage comparator using only bjts.

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mastevano

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Does anyone have sample schematics or any ideas on how to start this?
 

Hi,

Dont know if it is what you want, but your requirement looks like the old schmitt trigger.

Look there :

h**p://www.visionics.ee/curriculum/Experiments/Schmitt%20Trigger/Schmitt%20Trigger1.html

replace * whith when copying the link
 

Thanks. That is helpful. I looked into my requirements a little more and realized that it is supposed to be designed as an op-amp.
 

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