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Can you describe what you mean by “invert the inputs” by editing your question, please?
Comparator help (LmN) – Electrical Engineering Stack Exchange
If you have a new question relating to a car horn, you should ask it separately. datasbeet
Thank you for pointing this out and I will go back over the datasheet to get a better understanding of how to read it. Can anyone help me come up with ideas to try and get this working?
You need to add a pull-up resistor of about 10k between the output pin and daasheet positive supply rail. The horn is about 15 ohms.
Home Questions Tags Users Unanswered. Since your original question has been dealt with to your satisfaction, it’s done with. You need a pullup resistor.
ST Microelectronics – datasheet pdf
I looked over the datasheet for 3 days datassheet didn’t see the typical application. After I get my desired voltage out of my Comparator, how do I stabilize it so that I can use it on a load? Say I want to use the 12v Vout to make my horn go off on my car.
(PDF) LM2903N Datasheet download
Post as a guest Name. You’ll never get 0V out with GND equal to zero volts, no matter what, because of the saturation resistance of the comparator’s output transistor.
Just for grins – since you want to learn about comparators fatasheet it might be fun to take a look at the two circuits below and figure out why VOUT2 switches and VOUT1 doesn’t, even though VIN is the same input to both circuits. I will look into your question.
They helped a lot. Unfortunately, that ohm pullup I showed is more than likely causing the problem, and it should be more like 10k for an LM The LM has an lm293n collector output so it can not actively drive a positive voltage. You might want to try making your drawings easier to read, since that makes it much easier for us to follow the circuit’s ins and outs.
Sign up using Facebook. Reading the datasheet would have quickly cleared this up, there’s even a nice “typical application” schematic. Lm2903nn, when I check the output the resulting voltage is 0v.
I am using a LMN to learn about comparators. The LM has an open-collector output. Sign up using Email and Password. Also, thanks for the 10K resistor idea that got the voltage down to what I was hoping to see.