Abstract: A high voltage power supply is disclosed. The high voltage power supply comprises a primary winding and one or more secondary windings. In one embodiment, a single secondary winding is used and the high voltage doubler circuit comprises a capacitor string and a diode string. In another embodiment, a plurality of secondary windings are used and the high voltage doubler circuit comprises a plurality of low voltage doubler circuits arranged in series. To create a more uniform distribution of voltage across the capacitors in the high voltage doubler circuit, one or more shields are disposed on the printed circuit board. In certain embodiments, a high voltage shield is disposed at the high voltage output and a low voltage shield is disposed at the low voltage end of the high voltage doubler circuit. One or more intermediate shields may be disposed in the high voltage doubler circuit.

Abstract: A high voltage power supply is disclosed. The high voltage power supply comprises a primary winding and one or more secondary windings. In one embodiment, a single secondary winding is used and the high voltage doubler circuit comprises a capacitor string and a diode string. In another embodiment, a plurality of secondary windings are used and the high voltage doubler circuit comprises a plurality of low voltage doubler circuits arranged in series. To create a more uniform distribution of voltage across the capacitors in the high voltage doubler circuit, one or more shields are disposed on the printed circuit board. In certain embodiments, a high voltage shield is disposed at the high voltage output and a low voltage shield is disposed at the low voltage end of the high voltage doubler circuit. One or more intermediate shields may be disposed in the high voltage doubler circuit.

Abstract: An Insulated Core Transformer (ICT) high voltage DC power supply is disclosed. The power supply comprises a plurality of printed circuit boards, each comprising a secondary winding and a voltage doubler circuit. These voltage doubler circuits are arranged in series. The stacked printed circuit boards are surrounded by a plurality of grading rings. The last grading ring is electrically connected to the output voltage. High voltage resistors are then disposed between adjacent grading rings to form a voltage divider. The voltage of the first grading ring may be used as part of a feedback system to regulate the output of the AC power supply. By disposing the high voltage resistors on the grading rings, a more uniform voltage gradient may be created.

Abstract: A non-contact electrical power line voltage measurement device comprises a probe including an insulated shield supporting an electrode to sense electrostatically induced voltage from the power line. The shield houses a high voltage resistor connected in series with the electrode. A meter comprises a housing operatively associated with the shield and enclosing a measurement circuit electrically connected to the high voltage resistor for measuring induced electrode voltage. A calibration circuit correlates measured electrode voltage to power line voltage. A display is driven by the measurement circuit for displaying actual power line voltage responsive to the electrode being a select distance from the power line.

Abstract: A phasing voltage meter comprises first and second probes. Each probe comprises an insulated shield supporting an electrode for contacting a high voltage electrical conductor. The shield houses a high voltage resistor connected in series with the electrode. A capacitance formed by a metallic collar across the resistor compensates for stray capacitance across the resistor. A meter comprises a housing enclosing electrode circuit for measuring phasing voltage. The electrical circuit measures voltage across the electrodes and provides an output representing phasing voltage.

Abstract: A DC high potential testing meter comprises first and second probes. The first probe comprises an insulated shield supporting an electrode extending from a distal end of the shield. A high voltage resistor and a high voltage diode in the shield are connected in series with the electrode. A capacitance formed by a metallic collar across the high voltage diode provides uniform voltage distribution along the high voltage diode. The second probe comprises an insulated shield supporting an electrode. A high voltage resistor in the shield is connected in series with the electrode. A meter comprises a housing enclosing an electrical circuit for measuring voltage across the electrodes and provides an output representing measured voltage.

Abstract: An electrical power line voltage measurement device comprises a probe including an insulated shield supporting an electrode to sense voltage from one phase of the power line. The shield houses a high voltage resistor connected in series with the electrode. A meter comprises a housing operatively associated with the shield and enclosing a measurement circuit electrically connected to the high voltage resistor for measuring leakage current. A calibration circuit correlates measured leakage current to approximate power line voltage. A display is driven by the measurement circuit for displaying approximate power line voltage.

Abstract: A DC high potential testing meter comprises first and second probes. The first probe comprises an insulated shield supporting an electrode extending from a distal end of the shield. A high voltage resistor and a high voltage diode in the shield are connected in series with the electrode. A capacitance formed by a metallic collar across the high voltage diode provides uniform voltage distribution along the high voltage diode. The second probe comprises an insulated shield supporting an electrode. A high voltage resistor in the shield is connected in series with the electrode. A meter comprises a housing enclosing an electrical circuit for measuring voltage across the electrodes and provides an output representing measured voltage.

Abstract: A non-contact electrical power line voltage measurement device comprises a probe including an insulated shield supporting an electrode to sense electrostatically induced voltage from the power line. The shield houses a high voltage resistor connected in series with the electrode. A meter comprises a housing operatively associated with the shield and enclosing a measurement circuit electrically connected to the high voltage resistor for measuring induced electrode voltage. A calibration circuit correlates measured electrode voltage to power line voltage. A display is driven by the measurement circuit for displaying actual power line voltage responsive to the electrode being a select distance from the power line.

Abstract: A phasing voltage meter comprises first and second probes. Each probe comprises an insulated shield supporting an electrode for contacting a high voltage electrical conductor. The shield houses a high voltage resistor connected in series with the electrode. A capacitance formed by a metallic collar across the resistor compensates for stray capacitance across the resistor. A meter comprises a housing enclosing electrode circuit for measuring phasing voltage. The electrical circuit measures voltage across the electrodes and provides an output representing phasing voltage.