An electrostatically aided coating dispensing system in which the high distributed capacitance of a high voltage cable for connecting the high voltage supply to dispensing device is entirely eliminated.

A power converter, particularly adapted for supplying high voltage power for a CRT, for converting an unregulated level of input power to a regulated level of output power is described. The power converter includes a self-excited sinusoidal power oscillator comprising a transformer which has a secondary winding that resonates at a resonating frequency in response to the input signal and a field effect transistor connected to operate as a Class C amplifier. The field effect transistor is connecte...

This invention concerns a power supply arrangement which comprises a direct current power source circuit (A) including a battery (10), a voltage converter circuit (B) including an oscillator circuit (OC), an oscillating transformer (11) and an oscillation starting circuit (OS), a rectifier circuit (C) for rectifying said alternating current voltage to a direct current, and an oscillation stopping means (F) for stopping the current supplied from said battery to a load circuit member (D). The osci...

A power supply which automatically produces approximately the same output voltage from two or more input voltages where the input voltages have substantially different magnitudes.

Circuitry for providing output power for a load such as neon lights, one of the lights being cyclically flashed and the other being constantly illuminated. The circuitry includes separate rectifiers for the two loads, to minimize and virtually eliminate any flicker in the constant portion of the circuit which might otherwise exist incident to the cyclic flashing or interrupting elsewhere in the circuit. The output is desirably at about 20--23 kHz., which is approximately optimum frequency for ne...

An AC to DC power supply for a sensing system in which an oscillator responds to a condition being sensed and a detector connected with the output of the oscillator provides a signal utilized in a control or indicator. The detector is connected with the power supply through a transistor switch which responds to the source of voltage and has a time delay to prevent energization of the detector unless the oscillator is operating.

A pulsed power supply for providing power to a piezoelectric crystal. The power supply provides power to the piezoelectric crystal causing contraction of the crystal. Upon reaching a predetermined degree of contraction, the electrical voltage form the power supply is removed from the piezoelectric crystal by creating a short-circuit between the power supply and the crystal. Removal of electrical voltage from the crystal causes the immediate expansion of the crystal and a resulting energy wave.

A power supply is described for use with an electron gun employed in an electron beam furnace system. The power supply includes a transformer and a rectifier connecting the secondary of the transformer to the electron beam gun for supplying current thereto. The power supply also includes a semiconductor-switching circuit connected to the primary of the transformer for supplying current to the primary. The switching circuit is controlled by a pulsing circuit, and a trigger circuit is controlled b...

In a television receiver employing vacuum tubes, and which includes a fullwave bridge rectifier circuit for developing the required direct operating potential for the circuits, and for energizing the filaments, an instant-on circuit delivers one-half wave rectified voltage to the filaments of the vacuum tubes during standby operation by opening the circuit in one leg of the bridge rectifier using one section of a standby switch. The circuit delivers fullwave rectified voltage to the filaments du...

To reduce the cost of insulation in a high-voltage power supply capable of constant current or constant power operation, the power supply includes an optical self-powered feedback circuit from its high-voltage section to the low-voltage section to control the output of the power supply. The feedback circuit includes within the high-voltage section of the power supply: (1) a sensing circuit for obtaining an amplitude modulated signal related to current flowing through at least certain output term...