Results 241 to 250 of about 5,299,339 (300)

Constant-current D-C transmission

Electrical Engineering, 1935
High voltage d-c electric power transmission has been envisioned for many years, but numerous obstacles have prevented its use to any great extent. Most of these obstacles appear to be over come in the system described in this paper; this system comprises conversion of constant-potential a-c power to constant-current d-c power, transmission of constant-
C.H. Willis, B.D. Bedford, F.R. Elder
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Heat current limiter and constant heat current source

Physical Review E, 2012
Current limiters and constant current sources, which play important roles in electronic circuits, have been built up for many decades. Their thermal counterparts, heat current limiters and constant heat current sources, are still not available yet. By combining two typical nonlinear lattices, the Frenkel-Kontorova (FK) lattice and a coupled rotator ...
Wu, J., Wang, L., Li, B.
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Constant current ballast

Review of Scientific Instruments, 1976
When placed in series with a voltage source of 5 V or more, the constant current ballast will pass a preset constant current independent of voltage or resistance variations. Performance and characteristics for a system capable of delivering up to 0.6 A are described.
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Constant current source for iontophoresis

Journal of Neuroscience Methods, 1989
A simple, battery-powered current source is described that is suitable for the iontophoresis of axonal tracing substances, such as Phaseolus vulgaris leucoagglutinin. Unlike the previous designs that form the basis of most commonly used iontophoretic devices, this circuit does not use operational amplifiers to provide controlled current.
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A Static Constant-Current Circuit

Transactions of the American Institute of Electrical Engineers, 1938
Static constant-current circuits have been constructed by connecting an iron-core reactor, with predetermined characteristics, in parallel with a capacitor of a specified size such that the resultant input current is independent of line voltage. This parallel circuit is connected in series with the element through which the current is to be regulated ...
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Resonant-type constant-current regulators

Electrical Engineering, 1939
This paper deals with the fundamentals of resonant regulators for constant current, and compares them with other kinds of regulators. It also discusses the various forms such regulators may take, their applications and control, and protective equipment required for them.
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Constant-Current Coulometry

1972
Faraday's law states that the total amount of chemical change occurring at the electrodes of a chemical cell is related to the total amount of electricity passed through the cell. If, under the proper conditions, 96,496 C of electricity are passed across two electrodes immersed in a conducting solution, electrolysis will take place to the extent that ...
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Electronic Constant-Current Motor Systems

Transactions of the American Institute of Electrical Engineers, 1947
As an adjustable speed drive the electronic constant-current motor system has the same characteristics as the variable voltage system but with a minimum complement of power tubes. Its constant torque characteristics simplify its use for certain classes of application, such as maintenance of tension. These installations range in size from 1/4 horsepower
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A digitally controlled constant current stimulator

Electroencephalography and Clinical Neurophysiology, 1970
Abstract A constant current stimulator with digital intensity control is described. The stimulator will provide constant current pulses of from 0.25 to 15.75 mA. Special care has been taken to isolate the driver portion of the stimulator from ground.
J W, Emde, H W, Shipton
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Reciprocal derivative constant-current stripping analysis

Talanta, 1988
Reciprocal derivative constant-current stripping analysis (RD-CCSA) is based on the measurement of dt/dE converted from a derivative signal, dE/dt, vs. electrode potential (E) during the stripping of analyte under galvanostatic conditions from a mercury-film electrode after preconcentration.
X, Ruan, H, Chang
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