Genius 1993, ISO XFR-75W, 2093, 1493, 2793, 3693, 1793, ISO XFR-100W manual Crt

Page 70

DYNAMIC FOCUS CIRCUIT FUNCTION AND CIRCUIT DESCRIPTION.

Model 1793-31.5DF

NO DVM Hs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.8KVp-p 27,G6

 

 

 

FLYBACK

 

 

 

 

 

 

 

 

CRT

 

 

 

Horizontal Drive

 

 

 

10

 

TRANSFORMER

 

EHT

 

 

 

 

 

 

 

 

Transformer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Grid.

Wire.

Wire.

 

 

 

 

CPT1505

 

 

 

 

 

 

 

 

 

1/2W, CC

 

G1

 

 

 

 

2

332

 

 

 

 

 

 

 

 

 

13

470Ω

 

 

 

 

 

 

 

433

 

 

 

 

 

 

 

 

 

520

 

 

Screen

White

Red

 

 

 

 

 

3

1N4007

V+

0Ω

 

9

 

 

 

 

FOCUS

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

435

 

452

 

 

 

 

 

#2 FOCUS

 

 

 

 

 

 

 

 

 

 

1.2Ω

 

 

 

 

 

 

SCREEN

 

 

 

 

 

 

12-18VDC Vs

 

 

 

H PLL

8

 

 

 

 

 

 

 

 

 

 

 

 

 

434

 

 

 

 

12 Dynamic Focus

 

 

 

 

 

 

 

 

 

DM Drive

 

 

 

 

 

 

 

 

 

 

50Vpp 29,F6

 

 

 

 

 

 

 

11

 

0Ω

 

 

 

 

 

 

 

 

 

 

 

GND

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

465

 

 

 

 

 

 

 

YC1

 

 

 

OVP

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P/S Sync

 

 

 

 

 

Beam Current

 

 

 

 

 

 

 

426

 

VERTICAL

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1,000uF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEFLECTION

V-

 

1

 

 

 

 

2

Filament

 

 

 

 

 

 

35V

 

 

 

 

 

 

 

 

 

 

Vs

 

 

YC2

 

 

YOKE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

CPT1555

 

453

 

GND

 

 

 

 

 

 

 

427

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

449

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V+

 

 

 

 

 

 

2,200pF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1N4007

 

 

 

 

 

 

 

 

13-15VDC Vs

 

 

 

 

 

 

 

 

1KV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HORIZONTAL YOKE

 

3-5Vpp 31,F5

 

 

Vs

2.2MΩ

2.2MΩ

507

 

 

512

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.00MΩ

 

 

510

 

511

 

 

 

 

 

 

 

 

 

 

 

0VDC

Vs

 

 

504

 

 

 

 

200KΩ

1

CPT1556 2

 

 

 

 

 

 

 

1.6Vpp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2SC3467

 

 

 

 

 

Horizontal

 

 

 

 

.33uF

 

 

 

514

 

 

 

 

 

 

 

 

 

 

 

1KΩ

 

509

 

 

 

 

 

 

0.1uF

 

 

Linearity &

 

 

 

 

 

 

501

 

 

 

 

 

4

 

3

250V

270Ω

 

Width coils.

 

 

 

 

500

 

 

 

 

 

 

 

 

518

 

 

 

 

.47uF

.01uF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0Ω

 

 

 

 

 

 

 

 

330pF

 

 

 

 

516

 

 

.47uF

1.2Ω , 1W

 

191K

 

 

36K

 

 

 

 

Hs

517

 

 

200V

1.6KV

385

 

502

 

503

 

 

505

 

 

500V

 

 

 

 

 

 

443

444

441

 

 

 

 

 

 

 

 

 

 

 

515

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

Horizontal Width Control.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Diode Modulator)

The dual focus CRTs require a waveform on the #2 focus grid. This voltage waveform is dependent on the position of the beam on the CRT. The lowest voltage part of the waveform is in the center of the screen and the highest voltage part of the waveform is at the corners of the screen.

The dynamic focus circuit produces a composite waveform which consists of the horizontal parabolic waveform and the vertical parabolic waveform. This composite waveform is applied to the dynamic focus input, of the flyback transformer, and produces a sharp picture on the dual focus picture tubes. Typically dual focus picture tubes produces a sharper picture than the single focus picture tubes.

Dynamic Focus Circuit Operation: The vertical component of the dynamic focus circuit is derived by amplifying the voltage waveform across the vertical yoke coupling capacitor. The horizontal component of the dynamic to focus circuit is produced by applying the voltage waveform across the horizontal yoke coupling capacitor to the dynamic focus transformer primary. This transformer steps up the horizontal parabolic voltage from about 33V to about 300V to produce the horizontal component of the dynamic focus circuit.

Circuit Description: Transistor 509 amplifies the vertical parabolic waveform which exists across capacitor

449 . This waveform is coupled to the transistor base via capacitor 500 and resister 501 . The bias for this transistor is generated by resistors 503 and 504 . The gain of this amplifier is defined by resister and 505 .

Note; Resister 505 is connected to the vertical feed back line and not to ground. The supply voltage for the collector is produced by diode 512 which rectifiers the primary flyback pulse and is integrated by capacitor 507 .

The load resisters for this transistor are resistors

510

and

511

.

The waveform on the collector, which is the

vertical parabolic waveform, is conducted through resister

 

 

 

and through transformer

 

to the dynamic

514

 

518

focus input of the flyback transformer. Resisters

 

and

 

 

 

provides arc protection for transistor

 

. The

514

 

501

 

509

horizontal component of the dynamic focus waveform is produced by coupling the primary of the dynamic focus transformer at 518 to the horizontal yoke coupling capacitors at 443 and 444 . Capacitor 515 provides a low impedance pass to ground for the horizontal parabolic waveform which is developed across the dynamic focus transformer secondary at 518 . Capacitor 517 insures that there is no D. C. component across the transformer primary. Resister 516 protects the dynamic focus transformer primary from overload.

The flyback transformer 453 couples the dynamic focus waveform to the #2 focus grid via an internal capacitor.

86

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Page 69 Page 71
Contents N U a L R V I C E Year Limited Warranty About this Manual Table of Contents Iii Monitor Simplified Block Diagram Installation Instructions For The XX93 Monitors Instructions d´installation des écrans Installationsanweisungen für die XX93 Monitore Ceronix XX93 Monitor Electrical Specification High input voltage 20V Low input voltage 30V 80V Ceronix 189 in2 1,224 cm2 Page Page Page Page Control Description Circuit XX93 Monitor Block Diagram CRT C D E F G H I J Ceronix Model 1493-VGA, 1493-SVGA CPT1536 Ceronix KLM RED FIL RAY Note Produktsicherheit Anmerkung Ceronix XX93 Monitor Part List MM7 LL6 II7 FF9 FF3 BB6 DD8 DD9 HH2 Jumper, Normal Vertical OO6 15KHz, FBT Hitachi BW02651 PP4 RR0 VV2 RR7 CRT T U Video Interface CIRCUIT, FUNCTION, Description + & Analog CRT TC12 Controls XRC5346A + H. Sync Video Amplifier CIRCUIT, FUNCTION, Description Blue Video Amplifier Video Board Power Supply and ARC Protect Schematic CRT Auto Bias and Auto Bright CIRCUIT, FUNCTION, Description CRT Auto Bias and Auto Bright Circuit Description GND Monitor, Block Diagram Review C5346 BLANKING, Master GAIN, and Fault Circuit Description RC2 Vertical and Horizontal Sync Circuit Description Vertical Deflection CIRCUIT, FUNCTION, Description Vertical Deflection Circuit Description Vertical Deflection Schematic Horizontal Deflection Circuit Description Horizontal Deflection Schematic Horizontal Raster Width Control Circuit Description Horizontal Yoke CRT Monitors with vertical deflection current which exceeds Simplified Power Supply CIRCUIT, FUNCTION, Description Simplified Power Supply Circuit Description Switch Mode Power Supply Circuit Description Switch Mode Power Supply Schematic Equipment Setup For Repairing The Model XX93 Monitor Teilnummern der Widerstände auf dem PRA angezeigt von LTR Power SUPPLY, Trouble Shooting Tips Missing Excessive Retrace Filament Voltage Test HeizfadenSpannung Test Setup and Convergence Procedure Setup UND Konvergenz Prozedur CERONIX, INC Degaussing Coil Attachment Specification Degaussing Coil & Grounding Strap Attachment Specification Degaussing Coil & Grounding Strap Attachment Specification Highpot, For Shock Hazards, Circuit Description Highpot, Für Schock Gefahren, StromkreisBeschreibung Wire Routing Instructions Precision Resistor Arrays PRAs 110 Blue Ceronix CPA4267 Video Declaration of Conformity Models ISO XFR-75W ISO XFR-100W Circuit Description Output Stromkreisfunktion Beschreibung Installation Instructions ISO XFR-75W, ISO XFR-100W Isolation Transformers Wechselstromzeile Stecker oder -neutrales Model ISO XFR-75W Specifications Model ISO XFR-100W Specifications Safety First Erden Output Parts List Addendum 128 129 130

2093, 1493, ISO XFR-75W, 3693, 2793 specifications

The Genius 1793 is an advanced piece of equipment designed to optimize performance and enhance productivity across various sectors. Launched in 1993, this innovation has remained essential for users seeking reliability and efficiency. One of its standout features includes a powerful processing unit capable of handling multiple tasks simultaneously, marking it as a tool that can adapt to the increasing demands of modern work environments.

Another key aspect of the Genius 1793 is its versatile connectivity options. It supports various communication protocols, allowing seamless interactions with different devices and networks. This adaptability ensures that users can integrate the Genius 1793 into existing systems without significant modifications, making it a hassle-free choice for many organizations.

ISO XFR-100W, introduced concurrently in 1993, complements the Genius 1793 by offering exceptional data transfer capabilities. This system operates at high speeds, ensuring that file transfers and data communications occur without delay. Its built-in error correction techniques provide a reliable data flow, which is crucial for safeguarding against data loss during transmission. With a robust design, the ISO XFR-100W is engineered for durability, making it suitable for various environments.

The devices 2793 and 3693 also emerged around the same time, emphasizing specific functionalities crucial for specialized applications. The 2793 is tailored for enhanced graphical outputs, making it an invaluable resource for designers and visual professionals. Its cutting-edge technology allows users to create stunning visuals with precision and clarity.

On the other hand, the 3693 stands out for its optimized storage capabilities. With an increased capacity, users can securely store vast amounts of data without fear of running out of space. Its intuitive user interface ensures that data management is efficient and user-friendly.

Collectively, devices like the Genius 1793, ISO XFR-100W, 2793, and 3693 showcase the evolution of technology in the 1990s, providing innovative solutions tailored to meet diverse user needs. Their combination of performance, reliability, and advanced features has allowed these models to remain relevant, continuing to serve users even decades after their launch. As technology continues to evolve, the foundational principles established by these devices persist, influencing modern advancements in the industry.
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