Diamond buffers work rather well driven by opamps. I love the art of it.
If I remember 552 and depending on the buffer. It takes a few more caps to tame the phase behavior.
It is simple in the end, but a little tricky at first. I forget which exicon is slower than the other, needs higher resistor sometimes conbination of higher resistance and cap. Haven't played with them enough. Cant remember if I biased them low or high on purpose to see ringing at 20k with square. Then fine tuned the gate resistor values. Checked phase margin, then step them in fast 100mV intervals with my function generator for final stability test.
Remember hating those models for some reason. Maybe ill take a look at them again.
Be nice to see the schematic used for the final board. Usually another cap, diamonds get a weird phase peak sometimes. least with BJT.
But THD tends to be really good in the end.
With all these high voltage op amps. It is a amplifier I have been wanting for awhile. Diamond with opamp as driver
If I remember 552 and depending on the buffer. It takes a few more caps to tame the phase behavior.
It is simple in the end, but a little tricky at first. I forget which exicon is slower than the other, needs higher resistor sometimes conbination of higher resistance and cap. Haven't played with them enough. Cant remember if I biased them low or high on purpose to see ringing at 20k with square. Then fine tuned the gate resistor values. Checked phase margin, then step them in fast 100mV intervals with my function generator for final stability test.
Remember hating those models for some reason. Maybe ill take a look at them again.
Be nice to see the schematic used for the final board. Usually another cap, diamonds get a weird phase peak sometimes. least with BJT.
But THD tends to be really good in the end.
With all these high voltage op amps. It is a amplifier I have been wanting for awhile. Diamond with opamp as driver
here is the amplifier diagram
It is based on the diagram posted by LineUp
in the built prototype there is no input capacitor C2 and the capacitor marked NC in the feedback is also not installed
Values of the elements in the diagram
It is based on the diagram posted by LineUp
in the built prototype there is no input capacitor C2 and the capacitor marked NC in the feedback is also not installed
Values of the elements in the diagram
