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BC Rev. A BC NPN Darlington Transistor. • This device is designed for applications requiring . This datasheet contains the design specifications for. BC 2. Motorola Small–Signal Transistors, FETs and Diodes Device Data. ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted). BC datasheet, BC pdf, BC data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, NPN Darlington Transistor.

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When the Arduino pin is low, I measure around 14 volts across both transistors, which is fine.

BC517 Datasheet, Equivalent, Cross Reference Search

Use fricking code tags!!!! If it doesn’t provide its own power you have to provide at least 12V externally and high-side switch it. The circuits look similar, although they use an extra diode because of the dc motor and the motor is on the other side of the transistor, which I think shouldn’t matter. PHPirates on Jul 13, Project Would someone be interested why, I’m trying to control the solar panels at home to get them always at an optimal angle.

BC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

Hi, This is what you are looking for. I use supply with internal control voltage I think, so the first image.


MarkT on Jul 13, So 20 indeed is a positive supply voltage pin, as it’s labeled Vcc. Circuit Of course I’ve googled around a lot, and found a lot of examples to control a dc motor with a transistor like this. Oh, hang on a second.

Transistor The first time I connected the transistor without the base resistor, and I don’t think I’ve blown it but who knows So I’d need to figure out a 14V power supply Possible problem points I thought about: Sorry for the bumping, but I just measured some things. Everything runs on smoke, let the smoke out, it stops running You’ll have to find out whether the digital section is opto-isolated with a multimeter.

So since I want to switch the ground, I need to intercept the connection somewhere right? Actual result Unfortunately the motor always starts when I connect the transistor, even if the base is connected to the Arduino ground. Thanks Tom, nice find, only one page further Base resistor I calculated the 4K7 value with help from this post and otherswhich led me to believe that with a 5K resistor I’d get a base current of 1mA, which with a gain of I checked the datasheet on this would mean it would be able to saturate collector currents above mA, which is fine here.


bbc517 If its isolated and it provides its own power, you can very simply use an NPN to switch it. I just bought some PNP transistors and made a high side switch now, using a circuit for example from Stackexchange. Is it opto isolated? NEW Library to make fading leds a piece of cake https: TomGeorge Design and Repair of industrial control systems.

Q1 is PNP transistor Tom Android app included, hooray for ethernet shields. Where is the datasheet for this drive? Don’t try to switch the 12V, switch the GND and you are all set.

BC517 – BC517 NPN Darlington Transistor

Test code I’m sure there’s nothing wrong with that because I tested the output with a multimeter, 4. We also replaced the transistor just in case it was broken, and tested some other crucial connections, although not all. MarkT Brattain Member Posts: Is that the way to go?