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Do you have 180 phase shift in voltage in ce mode even if you use pnp?
Wiki User
∙ 12y ago
Common Emitter (CE) mode, or Class A operation, always introduces a 180 degree phase shift, i.e. it is inverting, whether or not you use PNP or NPN transistors.
In NPN, an increase in base voltage increases the collector current, which decreases the collector voltage.
In PNP, a decrease in base voltage increases the collector current, which increases the collector voltage.
They are both inverting.
When I say "increase" or "decrease" of voltage, I mean that "increase" means "towards the plus power supply".
Wiki User
∙ 12y ago
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