I noticed 2 different things happening depending on the power transistor I use.
If i put >5v through at gate, let's say we're powering an LED (it could be anything) the source is from 12v the drain goes through a resistor into an LED simple as 123.
Now which is normal, connect 5v to Gate the LED lights up, remove 5v from the gate the LED goes off that happens about half the time, the rest of them put 5v through the gate the LED lights up but if you simply pull the wire out (not supplying 0v just pull the plug) the LED stays lit up and continues to do so until 0v is passed where as the rest as soon as you pull the wire out to the gate the LED stops being fed.
I can give you an example of these two power transistors the TIP31C, 5v fed to gate LED comes on, pulling the wire or supplying 0v makes LED go off.
now the IRFZ44N supply 5v the LED comes on, simply pull the wire out from the gate the LED stays on, it's not until you feed 0v to gate will the transistor switch off the LED.
is this normal or are the ones that fail to switch off the LED when i pull the cable out faulty and a sign that a transistor is bad?
If i put >5v through at gate, let's say we're powering an LED (it could be anything) the source is from 12v the drain goes through a resistor into an LED simple as 123.
Now which is normal, connect 5v to Gate the LED lights up, remove 5v from the gate the LED goes off that happens about half the time, the rest of them put 5v through the gate the LED lights up but if you simply pull the wire out (not supplying 0v just pull the plug) the LED stays lit up and continues to do so until 0v is passed where as the rest as soon as you pull the wire out to the gate the LED stops being fed.
I can give you an example of these two power transistors the TIP31C, 5v fed to gate LED comes on, pulling the wire or supplying 0v makes LED go off.
now the IRFZ44N supply 5v the LED comes on, simply pull the wire out from the gate the LED stays on, it's not until you feed 0v to gate will the transistor switch off the LED.
is this normal or are the ones that fail to switch off the LED when i pull the cable out faulty and a sign that a transistor is bad?