The schmitt-trigger tag has no wiki summary.
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threshold problem on a Schmitt trigger op amp
I have the Schmitt trigger op amp on the below diagram. (channel A & B refers the oscilloscope probes on the following figures).
The resistor values are selected to set the trigger threshold as ...
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2answers
86 views
555 Schmitt Trigger works well with CMOS LMC but not NE555?
I have an NE555 (the non-CMOS version) running in astable mode at 118Khz. I have the output pin3 connected to input for a second 555 running as a Schmitt Trigger to invert the signal. What I found is ...
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1answer
75 views
increasing output voltage of a schmitt trigger op amp
I have the Schmitt trigger circuit below that I read the output as 1.6V for the logic High. I wonder how can I increase the output voltage of the comparator below without changing the threshold of the ...
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1answer
103 views
non-inverting schmitt trigger op amp - replacing a zener diode on the input
I wonder if it is possible to replace the second figure below with the first one? Would both Vo output be the same on the figures below? If they are different, ...
3
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2answers
165 views
How can I test a hex Schmitt trigger?
Yay, me...I just got done soldering my first surface mount IC. Because I know how volatile heat can be, and with how close the tip of my iron was to the IC (especially without a socket!), I'd like to ...
6
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2answers
1k views
How do I make an opamp comparator work in schmitt-trigger mode?
I want to control a small 12V case fan. I will set values of R1, R2 and R3 so that the fan will work above temperatures 40oC.
I understand that in these kind of systems, there will be an indecisive ...
4
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2answers
3k views
Comparator with hysteresis equations
I'm trying to be sure I'm computing the values for this circuit right. Here's an example of the circuit I'm trying to build (it's going in a 12V DC system so I filled that in already).
I have a ...
