I would like to build the wire loop alarm.
1. If I understand it correctly at 4.8MΩ when I add both resistors there is insufficient voltage in the gate of the mosfet and therefore the connection between drain and source cannot be made.
2. At 4.7MΩ (wire break) Is the voltage across the resistor already less and a connection between drain and source will occur?
3. What exactly is the purpose of the capacitor in this circuit?
Mainly I am trying to understand how best to calculate the other components "1x mosfet", "2x resistors" and "1x capacitor" to the 9V battery.
TDS for 2N7000 is here
1. If I understand it correctly at 4.8MΩ when I add both resistors there is insufficient voltage in the gate of the mosfet and therefore the connection between drain and source cannot be made.
2. At 4.7MΩ (wire break) Is the voltage across the resistor already less and a connection between drain and source will occur?
3. What exactly is the purpose of the capacitor in this circuit?
Mainly I am trying to understand how best to calculate the other components "1x mosfet", "2x resistors" and "1x capacitor" to the 9V battery.
TDS for 2N7000 is here