Posted on April 18, 2019


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.

Author: Arashinris JoJosho
Country: Papua New Guinea
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 5 March 2013
Pages: 18
PDF File Size: 15.18 Mb
ePub File Size: 15.12 Mb
ISBN: 454-2-66421-482-6
Downloads: 42484
Price: Free* [*Free Regsitration Required]
Uploader: Vojas

Hi, This is what you are looking for. NEW Library to make fading leds a piece of cake https: Expected result There should flow current to the controller datashet when the Arduino puts 5V on the transistor, and not so otherwise.

Is that the way to go? Project Would someone be interested why, I’m trying to control the solar panels at home to get them always at an optimal angle. You’ll have to find out whether the digital section is opto-isolated with a multimeter.

BC517 Datasheet, Equivalent, Cross Reference Search

MarkT Brattain Member Posts: MarkT on Jul 13, When the Arduino pin is low, I measure around 14 volts across both transistors, which is fine. Don’t try to switch the 12V, switch the GND and you are all set. I use supply with internal control voltage I think, so the first image. Where is the datasheet for this drive? Thanks Tom, nice find, only one page further So I’d need to figure out a 14V power supply 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.


Test code I’m sure there’s nothing wrong with that because I tested the output with a multimeter, 4.

Now looking at the second picture, and there I can switch the connection to ground. 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.

Actual result Unfortunately the motor always starts when I connect the transistor, even if the base is connected to the Arduino ground.

So 20 indeed is a positive supply voltage pin, as it’s labeled Vcc. Is it opto isolated?

BC Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

So since I want to switch the ground, I need to intercept the connection somewhere right? Android app included, hooray xatasheet ethernet shields. I just bought some PNP transistors and made a high side switch now, using a circuit for example from Stackexchange.


Transistor The first time I connected the transistor without the base resistor, and I don’t think I’ve blown it but who knows Use fricking code tags!!!!

We also replaced the transistor just in case it was broken, and tested some other crucial connections, although not all. If it doesn’t provide its own power you have to provide at least 12V externally and high-side switch it.

PHPirates on Jul 13, Possible problem points I thought about: Q1 is PNP transistor Tom Everything runs on smoke, let the smoke out, it stops running Oh, hang on a second. TomGeorge Design and Repair of industrial control systems.

BC517 – BC517 NPN Darlington Transistor

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. If its isolated and it provides its own power, you can very simply use an NPN to switch it. Sorry for the bumping, but I just measured some things. But now the motor doesn’t do anything