VoltageControlledCurrentSource

Class Arguments

Argument	Type	Default Value
voltage_source	VoltageSource
calibration	Calibration
min_current	TFloat	-inf
max_current	TFloat	inf
default_ramp_steps	TInt32	30

Bold arguments are mandatory. For more documentation on the listed arguments refer to the class definition below. If parameters appear in this list but not in the class definition below, please recursively check the linked base classes for the definition of the parameter.

Inheritance Diagram

Example Component Dictionary

   {
    "currentsource_example": {
        "classname": "atomiq.components.electronics.currentsource.VoltageControlledCurrentSource",
        "arguments": {
            "voltage_source": "<mandatory parameter (VoltageSource)>",
            "calibration": "<mandatory parameter (Calibration)>",
            "min_current": -1e999,
            "max_current": 1e999,
            "default_ramp_steps": 30
        }
    }
}

Class Description

class atomiq.components.electronics.currentsource.VoltageControlledCurrentSource(voltage_source, calibration, *args, **kwargs)

Bases: CurrentSource

A current source controlled by an analog voltage

A typical usecase for this class are voltage-controlled power supplies that drive the current through a coil.

Parameters:

• voltage_source (VoltageSource) -- Voltage source that controls the current source

• calibration (Calibration) -- Calibration U = f(I) to give the control voltage U for a desired current I

A Parametrizable is an entity that can be controlled by one or more continuous parameter(s)

ramp_current(duration, current_end, current_start=nan, ramp_timestep=-1.0, ramp_steps=-1)

Ramp current over a given duration.

This method advances the timeline by duration

Parameters:

• duration (artiq.compiler.types.TMono('float', OrderedDict())) -- ramp duration [s]

• current_end (artiq.compiler.types.TMono('float', OrderedDict())) -- end current [A]

• current_start (artiq.compiler.types.TMono('float', OrderedDict())) -- initial current [A]. If not given, the ramp starts from the current operating current.

• ramp_timestep (artiq.compiler.types.TMono('float', OrderedDict()))

• ramp_steps (artiq.compiler.types.TMono('int', OrderedDict({'width': artiq.compiler.types.TValue(32)})))

set_current(current)

Set the current delivered by the current source

Parameters:

current (artiq.compiler.types.TMono('float', OrderedDict())) -- Current in A