Skip to main content
deleted 17 characters in body
Source Link
jay
  • 3.9k
  • 10
  • 24

Question: "MOSFET did not get sufficient voltage at Vgs(th) to turn on..what correction"
Answer: Since there is an oscillator, make a charge pump (voltage double or triple). Then switch that voltage on the FET gate.

One thing you may try, just to see it on the simulator is:
Shift the operating point, by adding two resistors and a capacitor
1.5V--Ra--(X)--Rb--GND, (X)--FET gate, (X)--Cx--555 output.

Regards,


Question: "MOSFET did not get sufficient voltage at Vgs(th) to turn on..what correction"
Answer: Since there is an oscillator, make a charge pump (voltage double or triple). Then switch that voltage on the FET gate.

One thing you may try, just to see it on the simulator is:
Shift the operating point, by adding two resistors and a capacitor
1.5V--Ra--(X)--Rb--GND, (X)--FET gate, (X)--Cx--555 output.

Regards,


Question: "MOSFET did not get sufficient voltage at Vgs(th) to turn on..what correction"
Answer: Since there is an oscillator, make a charge pump (voltage double or triple). Then switch that voltage on the FET gate.

One thing you may try, just to see it on the simulator is:
Shift the operating point, by adding two resistors and a capacitor
1.5V--Ra--(X)--Rb--GND, (X)--FET gate, (X)--Cx--555 output.

Source Link
jay
  • 3.9k
  • 10
  • 24


Question: "MOSFET did not get sufficient voltage at Vgs(th) to turn on..what correction"
Answer: Since there is an oscillator, make a charge pump (voltage double or triple). Then switch that voltage on the FET gate.

One thing you may try, just to see it on the simulator is:
Shift the operating point, by adding two resistors and a capacitor
1.5V--Ra--(X)--Rb--GND, (X)--FET gate, (X)--Cx--555 output.

Regards,