In a common emitter amp like this how do you calculate the ripple current in the bypass cap
having a 4 ohm resistor, 2A bias and 20V ac output. I would like to use a 1F super cap but it
only has a 1.2A ripple rating so I don't know if that is enough.
having a 4 ohm resistor, 2A bias and 20V ac output. I would like to use a 1F super cap but it
only has a 1.2A ripple rating so I don't know if that is enough.
Signal current in C2 is approx. equal to the signal plate current.
So calculate the maximum signal Vout, and divide by Rl to get the maximum ripple C2 current.
Bear in mind this will be at signal frequencies, not at power line frequencies.
Roughly, the maximum C2 ripple current will be Vcc / ( 3 x Rl )
This is good enough for choosing C2.
So calculate the maximum signal Vout, and divide by Rl to get the maximum ripple C2 current.
Bear in mind this will be at signal frequencies, not at power line frequencies.
Roughly, the maximum C2 ripple current will be Vcc / ( 3 x Rl )
This is good enough for choosing C2.
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