CONTROL OF TRIM COIL CURRENTS BY RHEOSTAT BRIDGES WITH EFFICIENCIES ABOVE 80 PER CENT
The 40 trim coil circuits of the 70-inch cyclotron being installed at the Naval Radiological Defense Laboratory are to be powered by a remote power supply which energizes 40 series-connected rheostat bridge circuits located on the cyclotron proper. The rheostat bridges will have a maximum power efficiency in excess of 80%.