Today, as in the past, I find the level-shifting circuit confounding. I seems to me that the microcontroller pin would see 5 volts at certain times. I suppose I need to set up this circuit and test it with a multi-meter or oscilloscope. Thank you for the clear explanation.
Thanks for watching the video. One of the key things to keep in mind is when the microcontroller digital pin is low, it needs to be an active low so that it sinks the current flowing through the resistor tied to the 5V source so that all the voltage is dropped across the resistor. And when the microcontroller is high the MOSFET can be thought of as an open switch so the microcontroller pin is just floating.
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Today, as in the past, I find the level-shifting circuit confounding. I seems to me that the microcontroller pin would see 5 volts at certain times. I suppose I need to set up this circuit and test it with a multi-meter or oscilloscope. Thank you for the clear explanation.
Thanks for watching the video. One of the key things to keep in mind is when the microcontroller digital pin is low, it needs to be an active low so that it sinks the current flowing through the resistor tied to the 5V source so that all the voltage is dropped across the resistor. And when the microcontroller is high the MOSFET can be thought of as an open switch so the microcontroller pin is just floating.
6:00 BJT npn transitor symbol and description N-Channel MOSFET? Which is correct? FMHO MOSFET ;)
Yes, should have pointed that out. Using and explaining MOSFET but wrong symbol. Thanks for commenting
Is this latching?
The Solenoid? No was not a latching
Good tutorial. Ooops.... Bipolar transistor symbols used to represent mosfets :(
Yes, should have pointed that out. Using and explaining MOSFET but wrong symbol. Thanks for commenting