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The time now is I would like to control it using one GPIO pin, which delivers 3. PNP transistor not working 2. I did some tests with one of them, and at this point, it seems to work perfectly.

CMOS Technology file 1. ModelSim – How to force a struct type written in SystemVerilog? How do you get an MCU design to market quickly?

The math I chose could use more explanation. It’s max collector current is mA, so you are pushing that spec a bit. Can you explain me a bit more why the transistors I mentionned in OP aren’t best for that use? Anyone can give me a datasheet about Charge-scaling DAC? The problem is that the GPIO pin aren’t powerful enough to drive the fan plus it would be dangerous for the Pi itself.

Often, it’s lower than that, but sometimes it may be a little higher. This provides two equations and two unknowns the resistors. So I’m using a small fan that works perfectly, but is quite noisy when at full load.

### 2N Datasheet(PDF) – Linear Integrated Systems

How reliable is it? HerrCrazi Well, that makes things lots easier. I thought your question was pretty well-framed. While there are NPN transistors that can work for this relatively low current fan, generally load switching is best done using an NFET. Sign up using Email and Password.

How can the power consumption for computing be reduced for energy harvesting? But it is all worth a try. Thank you very much for this great answer!

Equating complex number interms of the other 6. There isn’t much xatasheet into the case, so the smaller the circuit will be, the better it will be. If you want to search a similar part from the parts available at your local shop, compare Vgs off and Idss.

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## JFET SWITCHING N CHANNEL- DEPLETION

Dec 242: Post as a guest Name. Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7. PV charger battery circuit 4. I’m still trying to understand the maths you did. I think at that point I understood almost 22n4392 you explained me.

So it probably will be fine, as shown. Check if datashewt country is in the list: Losses in inductor of a boost converter 9. So perhaps 15 C rise over ambient? Must the values of these resistors be exactly as you said, or would it be possible to use only one of them?

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Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. You could also consider a fan with a PWM control input. There is another worry to deal with. That’s why I would prefer being able to control it with a GPIO pin which is completely doable, I’ve seen a lot of tutorials about that.

Sign up or log in Sign up using Google. The transistors I have several pieces in each case: What is the function of TR1 in this circuit 3. Mouser have dealers in about 60 countries all over the world. Then, highlighting the common factor on the left: So perhaps it is okay. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

In case it helps, here are the resulting equations.

In the second circuit case R2, R3 datsaheet R4 are important. Heat sinks, Part 2: Then, highlighting the common factor on the left:. But it can be done. As I said in the title, I’m looking for a transistor that I could use for switching a Raspberry Pi 5v.

But I think it will work. For BJTs, to use in parallel have to use ballast resistors.