Type II compensator generator, SMU example tuning

[ducky64]

Tuning and tested with the actual hardare.

• Add the Type II Compensator as a generator, and replace the simple integrator in the SMU with this, with a current-limiting-mode cutoff frequency of 75kHz
• Change the current sense diff-RC cutoff frequency to 1-10MHz to push the pole higher, for stability
• Up the gate drive resistance to 150ohm, so it doesn't load the source opamp to instability
• Update SPICE sim

[Copilot]

Pull request overview

Adds a Type II compensator building block and updates the USB Source Measure Unit (SMU) example hardware/simulation artifacts to match new loop-compensation and stability tuning.

Changes:

• Introduces CompensatorType2 (Type II compensator) as an importable schematic-backed control circuit.
• Updates the SMU example to use the new compensator and changes the gate-drive resistor implementation (now a 10× series split).
• Refreshes KiCad + SVGPCB + LTSpice simulation files to reflect the tuned analog control/power stage.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
examples/test_usb_source_measure.py	Updates driver gate resistance/power assumptions and increases the series-split resistor count.
examples/UsbSourceMeasure/analysis/power_stage.asc	Updates LTSpice power-stage model for new tuning/loop analysis setup.
examples/UsbSourceMeasure/UsbSourceMeasure.svgpcb.js	Updates PCB placement/netlist to match schematic changes (compensator + resistor array changes).
examples/UsbSourceMeasure/SourceMeasureControl.kicad_sch	Switches integrator block to #CompensatorType2(...) and adjusts filter cutoff parameters + notes.
edg/abstract_parts/resources/CompensatorType2.kicad_sch	Adds the KiCad schematic resource used by the new compensator block import.
edg/abstract_parts/init.py	Exposes CompensatorType2 from abstract_parts.
edg/abstract_parts/ControlCircuits.py	Implements the new CompensatorType2 block and KiCad import/conversions.

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[Copilot]

SYMATTR Value 100� contains a replacement/invalid character (likely intended to be a micro prefix). LTspice value fields are typically ASCII (eg 100u), and this character can cause parsing issues depending on editor/encoding. Replace it with an unambiguous ASCII value.

Suggested change

	SYMATTR Value 100�
	SYMATTR Value 100u