..`hmm patulong nman sa report ko bout complementary symmetry oh plszs

[lance16]

..`hmmmmm..

..`wat fuh vah eun purpose ng complementary symmetry amp..??

..`hmm tsk sa schematic diagram niah panuh vah eun flow ng current..??

..`pd vah paki discuss naman uh..

..`trnx fuh..

..`hope u can help me..

..`G.B.

[lance16]

..`wakuku..

..`pa elp naman fuh..

..`xe nid nah report yan tom..

..`kami magrereport kahtt di fah na eexplain samin nan teacher namin huhuhu..

..`plszs help me

[lance16]

Complementary symmetry
A pnp transistor s used w/ an npn transistor to provide complementary current variations for the same input signal.as one current increases,the other decreases.the purpose is to elimiate the need for a push full drive. Furtheremore, a stacked series output circiut can be used,w/c eliminate the output transformer . as a result,the typical comp..symmetry audio output circuit in fig. 3-12 is completely transformer less.
..`input circuit in the fig. 3-12 the audio signal s coupled to both q1 and q2 by ci. The single ended input delivers the same polarity to both transistors  but one is pnp and the other npn. Assume the audio input signal increases positively in a positive direction. The positive base voltage for q2, w/c is npn, increases ic. However more positive base voltage for the pnp transistor q1, decreases 1c2 for this transistor.
On the next half cycle, the negative signal makes the base less positive for both transistors. Then ic decreases the pnp transistor. The result is push pull collector current for the output signal, even though the circuit has single ended input signal at the base of q1 and q2 resistors r1 to r3 use forward bias in the base circuit.
In fig.3-12 transistor q1 and q2 are stacked in series for v+.the two emitters are connected together part of v+ supplies positive vce for q1. However, the ther part of v+ is the emitter voltage on q2. The positive v+ corresponds to negative collector voltage for the pnp transistor.

[lance16]

..`yan fuh uh..

..`how it worksz..??

..`plszs elp me..

[rdpzycho]

sir, kindly avoid textspeak (as stated in forum rules). mas mahirap kasing basahin para sa iba.

simple lang naman ang complementary symmetry. NPN sa taas, PNP sa baba. bakit complementary? kung positive 'yung input, positive 'yung output from NPN then off 'yung PNP. kung negative 'yung output, negative 'yung flow papunta sa PNP then off 'yung NPN. this way, isang input lang 'yung base nung magkaparehas na transistor.

[lance16]

..`ok tnx fuh..