asking
Full Member level 5
Hello friends,
i m in search for how to drive BC557 with same duty cycle of PIC Microcontroller. I want to use to Power up 2.3" Large 7 Segment Display, Please suggest me circuit. Because if i directly provide signal to the base of PNP Transistor from Microntroller using 1K in series. It keeps the Display on....contantly...its not changing with Microcontroller Signal. So Please suggest...circuit for BC557.... for NPN Transistors its simple...it directly works by providing signal to base via 1K Resistor, but not with PNP...Plz help..
i m in search for how to drive BC557 with same duty cycle of PIC Microcontroller. I want to use to Power up 2.3" Large 7 Segment Display, Please suggest me circuit. Because if i directly provide signal to the base of PNP Transistor from Microntroller using 1K in series. It keeps the Display on....contantly...its not changing with Microcontroller Signal. So Please suggest...circuit for BC557.... for NPN Transistors its simple...it directly works by providing signal to base via 1K Resistor, but not with PNP...Plz help..