Abstract: Apparatus and method for optically testing products such as condoms, gloves or any number of similar objects without contact and non-destructively. In testing for holes, a light source having a wavelength at which the product to be tested is relatively opaque is used to illuminate either the inner or outer wall of the product and a photo sensor sensitive to the particular wavelength is located to sense the amount of light passing through the wall of the product. In testing for embedded particles, a light source of visible light is used to illuminate the product to be tested and a photosensor senses any variation in the amount of light passing through the walls of the product.In the testing of products, such as condoms, for the presence of holes, the condom is mounted on a transparent mandrel or distended by inflating the condom with a jet of air.

Abstract: A CRT image display emanates an undesired stray magnetic field that originates in the horizontal deflection coil of a beam-deflecting yoke energized by pulses from a horizontal oscillator circuit. A novel drop-in auxiliary pulse generator substantially electrically independent of the CRT image display, and synchronized with the output of the horizontal oscillator circuit, provides for energizing systems or devices that can suppress the stray magnetic field. The auxiliary pulse generator relieves the CRT horizontal oscillator of the burden of energizing a system for suppressing the stray magnetic field.