Abstract: A device for coating wire with a pulverized insulating material wherein wire is coated with the insulator in an electrostatic coating machine which establishes a potential difference between the wire and the insulation and thereby causes the insulation to adhere to the wire electrostatically, without the use of solvents. After such coating, the coated wire is sintered and hardened in a sintering and hardening oven in order to form a lacquered wire with a uniform insulation thickness. Insulation thickness can be maintained at a desired value by the control device for adjusting the length of wire being exposed to the insulator in pulverized form within the electrostatic coating machine. The supply of insulator used in pulverized form is continuously fed from a reservoir into the electrostatic coating machine so as to prevent smaller and lighter particles from being first attracted to the wire, and thereby depleting such particles excessively while leaving only larger and heavier particles available for coating.

Abstract: Wire is coated with an insulator in an electrostatic coating machine which establishes a potential difference between the wire and the insulation and thereby causes the insulation to adhere to the wire electrostatically, without the use of solvents. After such coating, the coated wire is sintered and hardened in order to form a lacquered wire with a uniform insulation thickness. Insulation thickness can be maintained at a desired value by adjusting the length of wire being exposed to the insulator in pulverized form within the electrostatic coating machine and/or the potential difference therein. The supply of insulator used in pulverized form is continuously fed into the electrostatic coating machine so as to prevent smaller and lighter particles from being first attracted to the wire, and thereby depleting such particles excessively while leaving only larger and heavier particles available for coating.

Abstract: A method of aligning a body in a desired position comprises producing an image from the body which is then broken down into image points with a spacing smaller than the required accuracy, storing the information content of the image points in digital form, comparing the stored information with desired information and moving the body accordingly.

Abstract: A method of alignment of two parts comprises separating the two parts and producing images of the separated parts, breaking down the images into image points with a spacing smaller than the required accuracy, digitalizing the information content of the image points and comparing the actual position of the parts, taking into account the initial separation, and moving the two parts, into alignment from the results of the comparison.

Abstract: An electronic cut out for the protection of output stage transistors of a low frequency amplifier comprises means for producing first and second direct voltages proportional to the output alternating voltage and the collector alternating current of the output stage transistors respectively, means for comparing these voltages and igniting a thyristor if the second voltage exceeds a predetermined threshold, the thyristor being connected to short circuit the low frequency signal to earth prior to its arrival at the output stage transistors when the thyristor is ignited.