Hi ,my FET switch broken. I replaced it with another 55NF06 . But it looks like my FET is in good condition. But not working with my tinyG. i also replaced my valve.
The problem is when i give run job my FET switches but its not coming back to off condition.
Vacuum pump issues
Re: Vacuum pump issues
Suggest you add a resistor from gate (control pin) to ground to help discharge FET gate if TinyG pin is inactive. 10k should probably work.android wrote:The problem is when i give run job my FET switches but its not coming back to off condition.
Re: Vacuum pump issues
... And a reverse polarity protection diode over MOSFET D-S ... 
Toys with motors, not to mention solenoid (which is pure coil ) make nasty back currents when switched off, which can simply blow MOSFET. Most MOSFETs have a protection diode built in, but in many cases it is not strong enough to protect MOSFET.
Regards,
Gregor
Toys with motors, not to mention solenoid (which is pure coil
) make nasty back currents when switched off, which can simply blow MOSFET. Most MOSFETs have a protection diode built in, but in many cases it is not strong enough to protect MOSFET.Regards,
Gregor