rivercam
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Hi, iam kind of novice to circuit design. I wish to design a push pull amplifier with single supply. I understand the push pull configuration for dual supply. I simply not getting the concept for single supply.
In single supply, at maximum my input voltage can be vdd--ground. In that case what does postive and negative cycle of input means? For example in a 3.3 v supply if i assume a sine wave is riding on VDD/2 as my input, then both of my transistors are in ON from VDD-VTHP to VTHN in one direction and vice versa in the other direction. There where is push pull action here? In other wrds i was unable to see the push and pull currents for negative and positive half cycles and what iam seeing is short circuit current from vdd- gnd when i probed at PMOS and NMOS transistors.
To be honest i dont know how to see the push pull currents. Am I needed to connect my load resistor from output to VDD/2 or to ground?
If some one can explainin me the transient action with sine wave as an input, i would greatly appreciate you.
If my question sounds silly,plz excuse me.
Thanks in advance
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