Rosen type piezoelectric transformer with multiple output electrodes, and stabilizer for multiple light source using that

• US 20030015943A1
• Filed: 09/20/2002
• Published: 01/23/2003
• Est. Priority Date: 06/28/2001
• Status: Active Grant

• Current Assignee: Jang-Hyoun Youm, Jong-Sun Kim
• Original Assignee: Jang-Hyoun Youm, Jong-Sun Kim
• Inventors: Kim, Jong-Sun, Youm, Jang-Hyoun
• Granted Patent: US 6,603,272 B2
• Time in Patent Office: Days
• US Class Current: 310/359
• CPC Class Codes: H05B 41/2822 using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
• CPC Class Codes: H10N 30/40 with electrical input and electrical output, e.g. functioning as transformers

Abstract

The present invention is disclosed a piezoelectric transformer with multiple outputs for lighting a plurality of cold cathode fluorescent lamps at the same time by forming a plurality of output electrodes as one body and a stabilizer having the piezoelectric transformer with multiple output electrodes. The piezoelectric transformer includes a piezoelectric plate; an input electrode formed on an upper surface of the plate; a plurality of output electrodes having an identical band shape, arranged in equal distance in the longitudinal direction of the plate at an outer side of the input electrode, and connected electrically to one ends of the plurality of the cold cathode fluorescent lamps respectively; and a common electrode formed on a bottom surface of the plate, confronting to the input electrode, commonly connected to ground of the stabilizer and other ends of the plurality of the cold cathode fluorescent lamps.

Claims

1. A Rosen type Piezoelectric Transformer with multiple output electrodes, being used for a stabilizer to light a plurality of cold cathode fluorescent lamps, comprising:

a piezoelectric plate;

an input electrode formed on an upper surface of the plate;

a plurality of output electrodes having an identical band shape, arranged in equal distance in the longitudinal direction of the plate at an outer side of the input electrode, and connected electrically to one ends of the plurality of the cold cathode fluorescent lamps respectively; and

a common electrode formed on a bottom surface of the plate, confronting to the input electrode, commonly connected to ground of the stabilizer and other ends of the plurality of the cold cathode fluorescent lamps.

2. A Rosen type Piezoelectric Transformer with multiple output electrodes according to claim 1, wherein said input electrode is formed at center of the upper surface of the plate in the longitudinal direction of the plate, and said output electrodes includes two first output electrodes formed on the both confronting side surface in the longitudinal direction of the plate.

3. A Rosen type Piezoelectric Transformer with multiple output electrodes according to claim 2, wherein said output electrodes further comprise a plurality of second output electrodes on the upper side of the plate, wherein the distances between the neighboring electrodes being identical each other.

4. A Rosen type Piezoelectric Transformer with multiple output electrodes according to claim 1, wherein the piezoelectric transformer is made by multi-layering first piezo-sheets printing both the input electrode and the output electrodes on the surface, and second piezp-sheets printing the common electrode on the surface in turn.

5. A Rosen type Piezoelectric Transformer with multiple output electrodes according to claim 1, wherein said input electrode is formed on one end of the upper surface of the plate in the longitudinal direction of the plate, and said multiple output electrodes comprise a first output electrode formed on a side surface of the plate in a direction of thickness of the plate, adjacent to the other end of the upper surface of the plate, and at least one second output electrode formed in a band shape, each second output electrode being arranged apart in an equal distance between the input electrode and first output electrode in the longitudinal direction on the upper side of the plate.

6. A stabilizer for multiple light sources, using a Rosen type Piezoelectric Transformer with multiple output electrodes, comprising:

a rectifying section rectifying AC commercial electric power source to DC electric power;

a power factor compensation section compensating the power factor caused by the fluctuation of the voltage of AC commercial electric power source so as to maintain the voltage of DC electric power generated from the rectifying section in uniform level;

AC voltage generating section converting the DC power inputted from the power factor compensation section to AC electric power having a predetermined frequency; and

a Rosen type Piezoelectric Transformer with multiple output electrodes having a identical band shape, wherein the output electrodes is arranged in parallel to a input electrode, have an equal distance between neighboring electrodes, are electrically connected to a plurality of cold cathode fluorescent lamps respectively;

whereby identical voltages are applied simultaneously to a plurality of fluorescent lamps.