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genuis,
do you a have schematic for that?
thank you.
joannes,
Is this schmidt-trigger going to be used in IC design?
nope. It is going to be used in electronics circuit where its output acts as an interrupt to microcontroller.
Actually 4V2_charge voltage is fix voltage that I use as Vref. I scaled down the voltage to 1.25V at IN-. I wanted the output trigger when Vbat scale down value is below than 1.25V at Vref. So in my case Vbat is the variable voltage.
I already changed resistors value to have 1.25V on the...
Hi all,
Can anyone tell me which type of schmitt trigger that really suitable for my design.
I want to design a circuit that triggers an interrupt ( rising/falling edge) whenever it detects certain range of input.
For an example, the output will trigger to low when it detects the input is 3.5V...
Keith,
I take the Vref from 4.12V_Charge, while Vbat is the triggering input. When the value of Vbat is lower than 3.7V the output is LOW. Is my circuit wrongly connected?
I'll replace it with 470R then.
Cameo,
- it comes from another step down regulator which is on-board. I use this voltage...
cameo_2007,
I cant change the Vcc since it is tied directly to microcontroller where its HIGH logic is 3.3V
Keith,
What I want to achieve is whenever the non-inverting (IN+) is below than Vref (IN-), the output will switch from HIGH to LOW. For the earlier case, the Vref after voltage...
Hi,
I am facing problem with voltage comparator. The comparator that I use is TL331 from TI. I connected every components as stated in the schematic but it didnt work. The output voltage is always fix at LOW level even I decreased/increased the Vin + at pin 3.
The output of the comparator...
Hi,
Does anyone knows the best way to interface microphone and speaker to GSM ZTE Module?
I have been doing some goggle on the net and found many solutions which I do not sure which one to trust.
What is the best amplifier IC to use with?
:sad:
Thank you.
That is why.
So I think I'll stick with the 1st one.
By the way, this is a bit out of context. But, do you know about microphone/speaker stuff?
I have problems connecting them to my GSM module.
Thank you.
I see. Now I got what you meant.
Thank you very much for sharing the diagram. Will be a very useful reference for next time.
D1N4148 is what for? Protection?
For the 2nd diagram, I believe the input voltage must be HIGH. Am I correct?
Rose.
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