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Project: 7 segment LED board with 4 different digits. Each of the individual digits will cycle from 1 to 2 to 3, etc. up to 9, then 0 and start over. There is a separate tactile button for each digit. Button goes to transistor which connects the a pin from the atmega328 chip to ground to signal...
Power goes to the first diode diode and then I put the meter on the end of the third diode connected in series and the other end of the meter to ground. Also the motor itself runs a lot harder. I don't have anything to measure the current right now. Of course now that I think about it the motor...
I got some 1N4001 diodes and putting 3 in series gave me a voltage drop of about only .4V. I don't understand why I didn't get more? I need about 3V drop. I'm not quite sure what to look for on the data sheet either. If someone could direct me in what I did wrong or direct me to the proper...
I have Arduino, it's supposed to take power through a mosfet from a battery pack when I press a button. I'm running the program through the serial monitor to see if it's actvating it's digital out and it's not. I checked to see if it's getting input voltage into the input pin and it is, but for...
I thought I was using N-ch mosfet? I just grabbed the n-ch mosfet symbol from the list on circuitsimulator.com. Also, I thought that on the n-ch mosfets the triangle base opens up towards the source. Also I'm a little confused but the n-ch mosfets with low side switch is easier, right? That's...
Thank you, but the problem I'm running into is if I movie the battery (-) to the FET pin(gate pin?) that in turn removes the Arduino output pin which is supposed to trigger the rest of the circuit. So after that I don't know where else I would hook it up at. I understand you said it would be...
Thank you so much Doug. You've been very helpful and I truly appreciate it. :)
I've made the changes you've suggested.(I think I got the mosfet symbol in the right orientation.)
Is that +/- 10V a general rule-of-thumb, or is it calculated somehow?Nevermind, I see it in the data sheet.
Also any...
Motor rotation is important as it drives a pump. Positive on the motor needs positive from the source, otherwise it won't work the way I need it to. That is why I sent power from the mosfet (+) to (+) on the motor. So does it still works like it is then right?
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One more...
Hello
I'm fairly new to small electronics. I know the basics of ohms law and some other little things here and there about circuit basics. So I have drawn up this basic circuit and tried to provide all the info necessary to help me select the right mosfet for my application. My attempts at...
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