| Electronics > Beginners |
| Question about Differential amplifier. |
| (1/1) |
| 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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