my problem is that i want to on and off my transistor through pot 100k. but when i turn on power at 100k resistor so it is off. and when i start decrease its resistor when it become 33k ohm so transistor get on. but when i increase its reistor even 100k again. so it doesnt get off.
i m using 2n2222 transitor.
Dear friends
Hi
The way for saturation is Give current to base of bjt. if your current is not enough , your transistor cant going to saturation region.
See it:
In first picture I gave current to base but it is not enough so bjt is in cutoff region. If you increase base bias voltage , so your bjt going to saturation region.
Or you can decrease the value of Base resistance( increase the base current)(second picture)
Ic = betta * iB
Best wishes
Goldsmith
my problem is that i want to on and off my transistor through pot 100k. but when i turn on power at 100k resistor so it is off. and when i start decrease its resistor when it become 33k ohm so transistor get on. but when i increase its reistor even 100k again. so it doesnt get off.
i m using 2n2222 transitor.