Sorry, my question was academic, I was just thinking about the control loop with two (or more) devices and the best way to control them - as a whole or individually, each has its drawbacks.
As for the J2, the PCB's Iv'e ordered have a single output - hope there's not too much debugging
Oops, Just spotted J3a drain not connected
As for the J2, the PCB's Iv'e ordered have a single output - hope there's not too much debugging
Oops, Just spotted J3a drain not connected
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If you wish to control the two current sources exactly, both for bias and for dynamic current modulation, then you should use separate optocouplers.
They are then only connected at the speaker ouput.
And then they do not need to be matched, whereas the Semisouth's still have to be.
Academic, as you said.
Patrick
They are then only connected at the speaker ouput.
And then they do not need to be matched, whereas the Semisouth's still have to be.
Academic, as you said.
Patrick
The positive tempco of JFETs are nowhere as bad as BJTs.
They also have less gm / transconductance.
Patrick
Thanks, Patrick.
This stuff slowly sinks in....
Cheers,
Jeff.
Unobtainium made available.
Interest for genuine Toshiba 2SK3497 curve tracer matched pairs & quads
Patrick
Interest for genuine Toshiba 2SK3497 curve tracer matched pairs & quads
Patrick
Yeah, they're dead all right.
Presumably:
FIRST WATT
http://www.firstwatt.com/pdf/prod_j2_man.pdf
6moons audio reviews: FirstWatt J2
Presumably:
FIRST WATT
http://www.firstwatt.com/pdf/prod_j2_man.pdf
6moons audio reviews: FirstWatt J2
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