for the moment there is a problem, I still have not enough time to understand, the only one that I have in mind for the moment is that the NPN and PNP party can not function in parallel.
Ian Fritz, October 2010**
- The purpose of this document is to describe a simple and accurate method of matching
transistors for equal base-emitter voltage Vbe. Transis...
This is a Raspberry Pi Shield. 12V DC to input. The board will power the Pi through the GPIO using a switch power supply based around the ACT4065A IC. The input 12V comes in through the DC "IN" barrel Jack. Then is turned on and off through the TIP120 NPN Transistor which is controlled through GPIO 4 on the Pi and outputs the barrel Jack labeled "OUT". There is also another TIP120 NPN transistor c...
I have figured out how to do a small group of characteristic curves for transistors, a different circuit for each base current. This was necessary because I believe EasyEDA does not a .step peram spice directive. Still, I think the results are pretty good.
The supply voltage is varied between 0 and 10 volts over one second, and the simulation runs for one second. Each circuit's base current...