A current collector for a photoscope of a photoelectric control installation of a flame cutting machine has an insulating plate having plug mounting means on one side and electrically connected contact wires on the other side with the contact wires arranged in a single row with their free spring ends taken up by a comb.

A current controller includes a first MOSFET of P type connected at a drain to a first node, at a gate to the input terminal and at a source to a power supply, a second MOSFET of N type connected at a drain to the first node via a first resistor, at a gate to the input terminal and at a source to ground, a third MOSFET of N type connected at a drain to the output terminal, at a gate to the first node via a second resistor and at a source to ground, and a capacitor connected between the gate of t...

A method and a device which are dependently and cojointly employed in the accurate control of the increase and decrease of alternating current, direct current, and concomitant electrical current extending through circuitry and passing to and through electrical devices, electrical appliances, electrical equipment, electrical motors, and electrical apparatuses which are connected to the innovative device. The method and the means of the innovative device can be applied and adapted to enable a plur...

A current limiter which is electrically arranged in series with a circuit breaker, the current limiter having contacts which are movable with respect to one another in an axial direction. A spring having a nonlinear characteristic is provided for producing a force which tends to counteract the motion of the contacts away from one another. While the contacts are in a closed position, the spring exerts a small closing force, thereby permitting the contacts to open by the force of overcurrent. Such...

A high current, low voltage generator is constructed of four pairs of rotatably mounted magnetic pole members. The pairs of magnetic pole members are disposed longitudinally along and at angular intervals around a cylindrical air gap region. The angular intervals between adjacent pairs of magnetic pole members alternates between 851/2.degree. and 941/2.degree.. A plurality of non-ferrous, conductive segments of a cylindrical, stationary armature are disposed in the air gap region. Rotation of th...

A current amplifier having a gain factor substantially independent of the common emitter forward current gain (beta) of its component transistors uses a cascade arrangement of current mirror amplifiers (CMA's) to compensate for variations in beta. The output of a first CMA, which current transfer ratio thereof decreases as beta decreases, is connected to the input of a second CMA, which current transfer ratio thereof increases as beta decreases. The composite current gain of the combined first a...

A generally figure-of-eight transformer core carries first, second and third toroidal windings spaced along its central leg and is formed with magnetic shunts across the gaps between central and outside legs in the planes between windings. A capacitor is connected across the second winding of value so that it coacts with the effective leakage reactances provided by the magnetic shunts so that the output load current provided by the third winding is directly proportional to the input voltage appl...

A high-current current-limiting fuse comprises an aluminum plate containing two spaced-apart notches extending transversely of the central longitudinal axis of the plate from opposite lateral edges of the plate to points near said axis, thereby dividing the plate into two massive tang portions spaced apart along said axis and a restricted neck portion interconnecting the tang portions. The tang portions constitute fuse terminals, and the neck portion constitutes fusible conducting means for carr...

A current regulator is disclosed which utilizes a well known driver chip. The driver chip has an input signal known as a brake signal "BRK" which typically is used to stop a standard DC motor. In this invention, the brake signal "BRK" is used to create a low resistance current path in order to sustain the current of the current regulator which is used in conjunction with a stepper motor.

A current memory comprises an input which is connected via a switch which is closed on a phase .phi.1 of a clock signal to inputs of a coarse memory cell (M1) and a fine memory cell(M2). The coarse memory cell samples the input current on phase .phi.1a of the clock and outputs a current thereafter. The fine memory cell senses the difference between the input current and the output of the coarse memory on phase .phi.1b of the clock. A second switch which is closed on phase .phi.2 of the clock pas...