I had considered that, but saw no reason sensing the current would be needed on the circuits I have looked at. I attached a picture of a circuit board. The resistor on this example is just a circuit trace that measures 0.265 ohms. It goes from source to ground. The inductive load is between V+ and drain. Nothing else is on the load circuit except a 10K resistor from the gate to ground which I imagine is for making sure it shuts off.One possible explanation is that it can be used to measure the current through the device.
I see an antenna on your PCB. Don't see a resistor.I attached a picture of a circuit board.
If it is just a circuit trace, how do you imagine that it is a resistor?I had considered that, but saw no reason sensing the current would be needed on the circuits I have looked at. I attached a picture of a circuit board. The resistor on this example is just a circuit trace that measures 0.265 ohms. It goes from source to ground. The inductive load is between V+ and drain. Nothing else is on the load circuit except a 10K resistor from the gate to ground which I imagine is for making sure it shuts off.
I may be completely wrong assuming it is a resistance. I sketched how the MOSFET is wired. If it isn’t a resistance, what else could it be? Thanks!If it is just a circuit trace, how do you imagine that it is a resistor?
The picture is nearly useless, a schematic would be more helpful.
It is a Schumann Resonator circuit. The gate of the MOSFET is controlled by a 555 timer. The frequency is set to ~7.83Hz (50% duty cycle). Other Schumann Resonator circuits I have looked also have the same low resistance (all others have an actual resistor instead of a circuit trace) tied to ground. That is why I assumed the circuit trace was a resistance. Either way, I just don’t understand why it is there.Thank you for the schematic.This looks something like and RF heating circuit. That would be degeneration for one reason or another.
I guess I am confused. Isn't the pancake coil the load?The squiggly line is the antenna and is the load of the circuit. It is an inherent part of the circuit and should not be removed.