GregWoods:GregWoods wrote:@pksatopksato wrote:Hi,
How to power lamp, relay, motor, solenoid, and other power device are very common question. I drawed four way to do it.
For reactive devices, like a relay, motor a diode is necessary to absorb flyback current.
I like the diagrams. Extremely useful.
Could you provide a little info on the purpose and relationship of the two resistors to the MOSFETs?
I had assumed that for the Raspberry Pi, I would be able to connect a GPIO pin directly to the MOSFET Gate-Source. Is that a bad thing to do?
I hope this link can be useful for you: http://www.homofaciens.de/technics-comp ... navion.htm Scroll down to the Driving the small signal transistors section.