A circuit is presented that controls a voltage programmable power supply and causes the current through a superconducting solenoid to vary either inversely or linearly with time. The circuit regulates the solenoid current and allows for a finite portion of the power supply current to shunt the solenoid.
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A substantial effort was expended in an attempt to construct A3 from high‐grade operational amplifiers. The needed stability was never obtained and the Analog Devices 605L instrumentation amplifier was used.
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© 1977 American Institute of Physics.
1977
American Institute of Physics
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