Neon discharging lamp lighting apparatus with improved lighting
First Claim
1. A neon discharging lamp lighting apparatus, comprising:
- a high frequency inverter of which an asymmetrical ratio of an output voltage waveform thereof is designated from 10 to 60%, said high frequency inverter being composed of Royer circuit; and
a low pressure type neon discharging lamp connected to said high frequency inverter;
wherein the Royer circuit comprises;
a power supply input terminal connected to a DC power supply;
a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; and
a transformer having a first primary winding, a second primary winding, a third primary winding, and a secondary winding, the first primary winding having a center tap and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between said power supply input terminal and the center tap, the third primary winding being connected between the base of said first transistor and the base of said second transistor.
1 Assignment
0 Petitions
Accused Products
Abstract
A neon discharging lamp lighting apparatus comprises a high frequency inverter of which an asymmetrical ratio of an output voltage waveform thereof is designated from 10 to 60% and a low pressure type neon discharging lamp connected to the high frequency inverter. Since the high frequency inverter circuit applies to the low pressure type neon discharging lamp a voltage having a waveform with an asymmetrical ratio for allowing rays of light free from luminance irregularity to be emitted, fringes can be prevented from taking place in rays of light emitted by the low pressure type neon discharging lamp. Thus, the low pressure type neon discharging lamp can operate as a high quality light source.
14 Citations
22 Claims
-
1. A neon discharging lamp lighting apparatus, comprising:
-
a high frequency inverter of which an asymmetrical ratio of an output voltage waveform thereof is designated from 10 to 60%, said high frequency inverter being composed of Royer circuit; and a low pressure type neon discharging lamp connected to said high frequency inverter; wherein the Royer circuit comprises; a power supply input terminal connected to a DC power supply; a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; and a transformer having a first primary winding, a second primary winding, a third primary winding, and a secondary winding, the first primary winding having a center tap and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between said power supply input terminal and the center tap, the third primary winding being connected between the base of said first transistor and the base of said second transistor. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A neon discharging lamp lighting apparatus, comprising:
-
a high frequency inverter of which an asymmetrical ratio of an output voltage waveform thereof is designated from 10 to 60%, said high frequency inverter being composed of a Royer circuit; and a low pressure type neon discharging lamp connected to said high frequency inverter; wherein the Royer circuit comprises; a power supply input terminal connected to a DC power supply; a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; and a transformer having a first primary winding, a second primary winding, and a secondary winding, the first primary winding having a center tap connected to said power supply input terminal and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between the base of said first transistor and the base of said second transistor. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A neon discharging lamp lighting apparatus, comprising:
-
a power supply input terminal connected to a DC power supply; a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; a transformer having a first primary winding, a second primary winding, a third primary winding, and a secondary winding, the first primary winding having a center tap and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between said power supply input terminal and the center tap, the third primary winding being connected between the base of said first transistor and the base of said second transistor; and a low pressure type neon discharging lamp connected to the secondary wiring of said transformer. - View Dependent Claims (12, 13, 14, 15, 16)
-
-
17. A neon discharging lamp lighting apparatus, comprising:
-
a power supply input terminal connected to a DC power supply; a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; a transformer having a first primary winding, a second primary winding, and a secondary winding, the first primary winding having a center tap connected to said power supply input terminal and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between the base of said first transistor and the base of said second transistor; and a low pressure type neon discharging lamp connected to the secondary wiring of said transformer. - View Dependent Claims (18, 19, 20, 21, 22)
-
Specification