Showing papers on "Power module published in 1973"

System for generating electrical energy to supply power to propel vehicles

Abstract: Solar radiant energy and high-intensity light are converted to electrical energy to supply electrical power for propelling vehicles in a safe, economical and efficient manner. The radiant energy can be beamed from outer space by the use of satellites with collecting surfaces which can produce and store electrical power and which can distribute the electrical power to earth stations for redistribution to high-intensity light sources. High-intensity light-receiving cells or panels are fixed to the surface of a vehicle to collect the high-intensity light and to convert the light into useful electric power to operate the vehicle. Energy can be stored in batteries for subsequent use. A vehicle can also be powered by hybrid means including solar cells and gas turbines.

Low leakage electrical power input circuit for electromedical and other similar apparatus

Abstract: A low leakage power input circuit for electromedical or other electrical equipment having an electrical power element, normally the primary winding of a transformer, and where the leakage current from the supply circuit to a grounding circuit should be very small made up of a power cord made up of a high line, a neutral line, and a grounding conductor, said high and neutral lines adapted for connection at one end to an electrical power source and said neutral and grounding conductor adapted for connection at the same end of the power cord to electrical ground, high and neutral lines connected at the power end of the power cord to the electrical power element of the electrical equipment, a first guard means enclosing the electrical power element of the electrical equipment and connected to the neutral line or to ground via a separate ground line, and a second guard in the form of a conducting metal enclosure, enclosing the first guard and insulated therefrom, and connected to the grounding conductor

A Field Modulated Frequency Down Conversion Power System

Abstract: A new concept in power generation has been theoretically developed and experimentally tested at Oklahoma State University. The generator design incorporates new techniques in field modulation and solid-state alternator output processing. The resulting generator is smaller and lighter than comparable commercial models presently available, and it will operate such that frequency output is independent of the shaft speed of a prime mover.

Optoelectronic Electricity Meter for High-Voltage Lines

Abstract: A new method has been developed for measuring the power on high-voltage lines. It involves determining the power directly on the high-voltage line and transmitting the measured values to the ground potential side by the aid of infrared light pulses. Two electromechanical counters at ground side, one for each direction of energy flow, record the transported electrical energy. The measuring error of the device is of the order of 0.2 percent. The small number of active electronic components should result in satisfactory reliability.

Power Consumption in a Transformerless TV Vertical Output Circuit

Abstract: A notable characteristic of transistor power amplifiers using complementary pairs as applied to TV vertical deflection systems is unbalanced dissipation in the output devices. The reasons for this unbalance and some of the factors influencing it are discussed in this paper.

The impact of semiconductor devices on electrical power engineering

Abstract: The differences in approach between power engineering and electronic engineering are briefly outlined and the role of semiconductor devices in place of those based on the mercury-arc is discussed. Applications of the diode and thyristor to d.c. and a.c. machines are described together with the use of thyristors in high voltage d.c. power transmission. The importance of careful integration of semiconductor devices with the associated machines in any proposed scheme is emphasised.