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Topic: 11-15V to drive 2N3904 base (Read 231 times) previous topic - next topic


You're in the General Electronics Topic, which includes Automotive, so you are cleared to speak freely...
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter


Today at 03:19 am Last Edit: Today at 03:28 am by Wawa
This might give you some ideas.
47uF cap can be bigger (not an option in bloody Fritzing).
You could add a 15volt TVS diode (super zener) across that cap for extra protection.
This diagram is ok if you draw <=80mA from Nano and outputs.
Otherwise lower R1 to 33ohm.

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