Resistor-printed board built in a flyback transformer for a video display appliance
AssigneeLG Electronics Inc.
InventorSeok Hwa Jeong
Life of this patent
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Abstract
A resistor-printed board built in a flyback transformer for a video display appliance with a reduced size as well as the resistance error of the printed resistors. A focus volume and a screen volume are printed on one surface of the resistor-printed board, and a bleeder resistor is printed on the other surface thereof, so that the size of the resistor-printed board is reduced, and a focus voltage and a screen voltage to be supplied to the appliance are stably adjusted, not affected by the printed error of the bleeder resistor.
Claims6
A resistor-printed board built in a flyback transformer including a primary winding, a secondary winding and a center tap therebetween for a video display appliance, the board comprising:
- a first surface;
- a second surface;
- a focus volume resistor and a screen volume resistor printed on said first surface of the board, and a bleeder resistor printed on said second surface of the board;
- said focus volume resistor being electrically connected to the center tap;
- and
- said bleeder resistor being electrically connected to said focus volume resistor and the center tap.
A resistor-printed board built in a transformer including a primary winding, a secondary winding, and a center tap of the secondary winding for a video display appliance, the board comprising:
- a first surface and a second surface;
- a focus volume variable resistor, with a fixed terminal and a variable terminal, printed on said first surface of the resistor-printed board, said fixed terminal being connected to the center tap of the secondary winding;
- a screen volume variable resistor, with a fixed terminal and a variable terminal printed on said first surface of the resistor-printed board;
- and
- a bleeder-resistor printed on said second surface of the resistor-printed board with a first terminal and a second terminal, said first terminal being connected to said fixed terminal of said focus volume variable resistor and to the center tap of the secondary winding.
A resistor-printed board built in a flyback transformer including a primary winding, a secondary winding, and a center tap of the secondary winding for a video display application comprising:
- a first surface and a second surface;
- a focus volume resistor printed on said first surface electrically connected to the center tap of the secondary winding;
- a screen volume resistor printed on said first surface;
- and
- a bleeder-resistor printed on said second surface electrically connected to said focus volume resistor and to the center tap of the secondary winding.
An electrical circuit for a video display application comprising:
- a resistor-printed board including:
- a first surface and a second surface;
- a focus volume resistor printed on said first surface;
- a screen volume resistor printed on said first surface;
- and
- a bleeder-resistor printed on said second surface electrically connected to said focus volume, said bleeder-resistor including a first terminal and a second terminal;
- and
- a flyback transformer including:
- a primary coil;
- a secondary coil;
- a center tap between said primary and said secondary coils;
- and
- a diode connected to said secondary coil;
- said first terminal of said bleeder resistor being connected to said center tap;
- and
- said second terminal of said bleeder resistor being connected to said diode .
Dependencies are inferred from the claim text.