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Question about Differential amplifier.
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ammjy:
Hello,
Thanks you for your time.
I have a question about differential amplifier.
I would like to know what does RC circuit that connected with Vout 1 doing in this differential amplifier.
it is just load might be ?
Please, let me know !
Ian.M:
I would expect a part designated RL to be the load. The series capacitor feeding RL is to block the DC voltage on the collector of T1.
David Hess:
It is AC coupling the load so I assume this is for an audio application.
Audioguru again:
Many audio amplifier differential amplifier circuits are DC-coupled.
David Hess:
--- Quote from: Audioguru again on November 16, 2019, 05:32:18 pm ---Many audio amplifier differential amplifier circuits are DC-coupled.
--- End quote ---
Sure, but you would not DC couple the output from half of a differential pair because of the large level shift unless you performed a second level shift. The output from one half has a very large offset.
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