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LMN Datasheet(PDF) – NXP Semiconductors, Low power dual voltage comparator
The LM has an open collector output so it can not actively drive a positive voltage. Just for grins – since you want to learn about comparators – it might be fun to take a datazheet at the two circuits below and dataseet out why VOUT2 switches and VOUT1 doesn’t, even though VIN is the same input to both circuits.
Since your original question has been dealt with to your satisfaction, it’s done with. One more question thought please?
Say I want to use the 12v Vout to make my horn go off on my car. They helped a lot.
ST Microelectronics – datasheet pdf
Thank you for pointing this out dwtasheet I will go back over the datasheet to get a better understanding of how to read it. You need a pullup resistor.
For a better handle on what’s going on with an LM, take a a look at the data sheetparticularly at Figure 3. The horn is about 15 ohms.
Sign up using Facebook. I will look into your question. The LM has an open-collector output. If you have a new question relating to a car horn, you should ask it separately.
Email Required, but never shown. Unfortunately, that ohm pullup I showed is more than likely causing the problem, and it should be more like 10k for an LM In general, inputs come from the left and the top of the drawing, and outputs go out the bottom and the right, kinda like this, after adding the pullup to the comparator’s output:.
Left click on the graphic to make it go full-screen and, by the way, here’s the LTspice datassheet list just in case you want to play with the circuit s:. You need to add a pull-up resistor of about 10k between the output pin and your positive supply rail. 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.
I am using a LMN to lm29033n about comparators. After I get my desired voltage out of my Comparator, how do I stabilize it so that I can use it on a load? 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 or log in Sign up using Google.
I mistakenly thought the inverted its output. Comparator help LmN Ask Datasyeet. Reading the datasheet would have quickly cleared this up, there’s even a nice “typical application” schematic. However, when I check the output the resulting voltage is 0v.
I looked over the datasheet dattasheet 3 days and didn’t see the typical application. Can you describe what you mean by “invert the inputs” by editing your question, please?
Why is this happening. Sign up using Email and Password. Left click on the graphic to make it go full-screen and, by the way, here’s the LTspice circuit list just in case you want to play with the circuit s: After testing the pull up daatasheet, I am left wondering when I invert the inputs I do not get 0v like I was expecting.