Timeline for How many transistors can be connected to Arduino pins?
Current License: CC BY-SA 3.0
5 events
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| Feb 25, 2018 at 14:48 | comment | added | Jot | The emitter/ground current of the TIP122 can raise the ground level, and that will directly influence the working of the Atmega chip. The ground path of the Atmega chip is not going to the connector, but connects to the ground path which has the large currents from the TIP122 transistors. It will probably work. A grounding problem is more serious with high frequences. Just to be sure, I would split the ground from the connector into two paths, one for the Atmega chip and one for the TIP122 transistors. | |
| Feb 24, 2018 at 18:16 | comment | added | Nikhil P | Can you plz recheck my circuit diagram ,and suggest me where i can seperate ground line with atmega(highlighted line is ground line is GND line for mosfet as well as microcontroller)..Also plz check for other errors. I am new in this field dont know desiging rules.i ve uploded complete circuit diagram above. | |
| Feb 22, 2018 at 0:00 | comment | added | Jot | @NikhilP, I don't know a website. As far as I know, that is a common design rule. If you use a single power connector for both the atmega chip and the transistors, then you could keep those ground paths seperatated and only connect them at the connector. | |
| Feb 20, 2018 at 18:59 | comment | added | Nikhil P | Thank for your answers,in my design i want to switch 24v 200mA fans only. I think thisll not disturb gnd of atmega, is it right?? Or not..and what to do if ive to switch large current thru transistor?? Do you have any notes or web link of this,,plz share.. | |
| Feb 17, 2018 at 14:19 | history | answered | Jot | CC BY-SA 3.0 |