Willen
Well-Known Member
I thought that NPN (Negative+Positive+Negative) passes Negative supply (like N-Channel FET) and PNP (Positive+Negative+Positive) passes Positive supply (like P-channel FET) when Base of it is powered. But seeing these two voltage regulator which are opposite than my understanding.
In the circuit NPN is passing positive supply and PNP is passing negative supply.
My questions are-
- how NPN passes positive and PNP passes negative supply?
- how transistors pass regulated voltage through CE if base of it is regulated? (I know emitter have 0.6V less than base voltage though).
Please tell me the operations (maybe path of current/voltage flow and working principle) of these regulators in simple words (circuit analysis). Simple words because I am just a hobbyist. Thank you!
In the circuit NPN is passing positive supply and PNP is passing negative supply.
My questions are-
- how NPN passes positive and PNP passes negative supply?
- how transistors pass regulated voltage through CE if base of it is regulated? (I know emitter have 0.6V less than base voltage though).
Please tell me the operations (maybe path of current/voltage flow and working principle) of these regulators in simple words (circuit analysis). Simple words because I am just a hobbyist. Thank you!
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