That Neumann FET circuit is interesting to see. It's obvious with hindsight, but another advantage of capacitive feedback is that the -10dB switch improves the linearity of the capsule amplifier as well as avoiding overloading the front end of the desk.
I suspect that the reason for avoiding phantom power is that 48V from a 3k4 source impedance doesn't really allow for the best analogue electronics.
I suspect that the reason for avoiding phantom power is that 48V from a 3k4 source impedance doesn't really allow for the best analogue electronics.
Hi
Not to deviate to far from the subject, but do you think this transistor would be useful in the application here or something similar?
http://www.fairchildsemi.com/ds/KS/KSK595H.pdf
Not to deviate to far from the subject, but do you think this transistor would be useful in the application here or something similar?
http://www.fairchildsemi.com/ds/KS/KSK595H.pdf
CBS240 said:Hi
Not to deviate to far from the subject, but do you think this transistor would be useful in the application here or something similar?
http://www.fairchildsemi.com/ds/KS/KSK595H.pdf
Several vendors have these FETs. They try to target a max Idss that fits the application ie. the mike has a max 1mA or whatever current draw (very important for cell phones). Some vendors include the diodes for bias which you would not have in a general purpose FET.
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