Evaluation of magnetic materials for static inverters and converters
Evaluation of magnetic materials for static inverters and converters, tested under square wave excitation and direct current excitation
Frost, R. M.↗
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An electro-mechanical dc voltage amplifier
Direct current voltage amplifier utilizing principles of servo system for gain stability
Savelle, C. R., Jr.↗
Motor brush wear measured with strain gages
Balanced bridge circuit, supplied with low-voltage direct current and connected to a readout device, measures remaining brush material, rate of brush wear, armature runout, and brush signature.
Farrell, W. T.↗
Optimal electric-drive system for vehicles
Pulse-width-modulated controller, for vehicle electrically driven by direct current from storage battery and requiring highest possible efficiency in battery use, varies electrical power through silicon controlled rectifiers for permanent magnet dc motors. System is not restricted to dc motors.
Sahinkaya, Y. E.↗
Thyristor switching circuit for a pulsed control system of dc electric motors
Calculated surges in switching circuit of pulsed control system direct current electric motor
Veitsman, L. YU.↗
Dc power supply for gaseous discharge lamps
Direct current power supply for gaseous discharge lamps
Freeman, W.↗
Electrostatic thrustor with improved insulators Patent
High voltage insulators for direct current in acceleration system of electrostatic thrustor
Byers, D. C.↗
Design and development of a dc motor with magnetically suspended rotor Final report, 5 Jul. 1968 - 31 Jul. 1970
Direct current motor with magnetically suspended rotor
Source record↗
Regenerative braking system Patent
Direct current electromotive system for regenerative braking of electric motor
Juergensen, K.↗
Reversible current control apparatus Patent
Reversible current directing circuitry for reversible motor control
Rapoza, E. J.↗
Self-repeating plasma generator having communicating annular and linear arc discharge passages Patent
Direct current powered self repeating plasma accelerator with interconnected annular and linear discharge channels
Sabol, A. P.↗
Amplitude modulated laser transmitter Patent
Development of apparatus for amplitude modulation of diode laser by periodic discharge of direct current power supply
Bilderback, R. R.↗
Investigations of low frequency oscillations in a spherical, cold cathode discharge in the presence of a dipolar magnetic field
Low frequency oscillation measurements on spherical magnetized cold cathode direct current discharge by plasma probes
Nisbet, J. S.↗
The development of a magnetically suspended motor for attitude control devices
Direct current motor with magnetically suspended rotor for attitude control
Suder, P. A.↗
A solid state acoustic variable time delay line Patent
Development and characteristics of solid state acoustic variable time delay line using direct current voltage and radio frequency pulses
Fitzgerald, T. M.↗
On the direction of electromigration in thin silver, gold, and copper films
Ion migration direction in thin Ag, Cu and Au films under direct current effect from resistance radioactive tracer measurements and scanning electron micrographs
Breitling, R. M.↗
Capacitive transducers
The theory, applications, and possible structural designs of capacitive transducers are presented. Emphasis is placed on the circuits used in connection with the sensors, such as AM, FM, resonant circuits, mode circuits, direct current circuits, and special circuits. Some criteria for selection of a design or the purchase of a commercial device are given.
Lucifredi, A. L.↗
Apollo/Saturn C00.00.19.3 operations and maintenance. Cathodic protection of communication cables
Operating and maintenance instructions for cathodic protection of communication cables at the Cape Kennedy Launch Complex are presented. The system is designed to prevent or arrest corrosion of communication cables buried in soil or submerged in water by impressing sufficient direct current from the rectifier through the anodes to the cable. This process neutralizes or counteracts current flowing from the cable into the soil or water, thus preventing or arresting corrosion of the cable sheath material.
Source record↗