The following para has a spelling error

The voltage sources for PNP transistors are reversed compared with an NPN transistors as shown in Figure above. The base-emitter junction must be forward biased in both cases. The base on a PNP transistor is biased negative (b) compared with positive (a) for an NPN. In both cases the base-collector junction is reverse biased. The PNP collector power supply is negative campared (s/b compared) with positive for an NPN transistor.

 

Here...

http://www.allaboutcircuits.com/vol_3/chpt_2/8.html

15 paragraphs down...

The voltage sources for PNP transistors are reversed compared with an NPN transistors as shown in Figure above. The base-emitter junction must be forward biased in both cases. The base on a PNP transistor is biased negative (b) compared with positive (a) for an NPN. In both cases the base-collector junction is reverse biased. The PNP collector power supply is negative campared with positive for an NPN transistor.

Verified.

Thank you.

 

Thanks optomist1 for pointing out this error. It has been correct in the ibiblio copy.