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LA78041-E
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LA78041-E

Product Overview

Category: Integrated Circuit (IC)

Use: The LA78041-E is a vertical deflection output IC designed for use in televisions and monitors. It is primarily used to drive the deflection yoke, which controls the horizontal movement of the electron beam in a cathode ray tube (CRT) display.

Characteristics: - High integration and reliability - Low power consumption - Compact package size - Wide operating voltage range - Excellent linearity and stability

Package: The LA78041-E is available in a compact 9-pin SIP (Single In-line Package) format. This package offers ease of installation and efficient heat dissipation.

Essence: The LA78041-E is an essential component in CRT displays, ensuring accurate and stable horizontal deflection of the electron beam.

Packaging/Quantity: The LA78041-E is typically packaged in reels or tubes, with quantities varying depending on the manufacturer's specifications.

Specifications

  • Supply Voltage: 12V
  • Output Current: 1.8A
  • Operating Temperature Range: -20°C to +85°C
  • Vertical Deflection Frequency: 50Hz to 120Hz
  • Power Dissipation: 2.5W

Pin Configuration

The LA78041-E features the following pin configuration:

  1. VCC - Supply Voltage
  2. GND - Ground
  3. Pump Out - Pumping Output
  4. Pump In - Pumping Input
  5. Pump GND - Pumping Ground
  6. DTC - DC Coupling Capacitor Terminal
  7. DEF - Deflection Output
  8. VFB - Feedback Voltage
  9. S-Correction - S-Correction Output

Functional Features

  • Built-in pump-up circuit for efficient high-voltage generation
  • S-correction circuit for improved linearity
  • Thermal protection circuit to prevent overheating
  • Wide operating voltage range for compatibility with various display systems
  • High output current capability for driving large deflection yokes

Advantages and Disadvantages

Advantages: - High integration and reliability ensure stable performance - Low power consumption contributes to energy efficiency - Compact package size allows for easy installation in space-constrained devices - Excellent linearity and stability result in accurate image reproduction

Disadvantages: - Limited to use in CRT displays, not compatible with modern flat-panel technologies - Requires additional components for complete deflection system implementation

Working Principles

The LA78041-E operates by receiving input signals from the horizontal deflection circuitry of a television or monitor. It amplifies and shapes these signals to generate the necessary currents for driving the deflection yoke. The built-in pump-up circuit generates the high voltages required for vertical deflection, while the S-correction circuit compensates for non-linearities in the deflection process.

Detailed Application Field Plans

The LA78041-E is widely used in the manufacturing of CRT televisions and monitors. Its compact size, low power consumption, and excellent performance make it suitable for various display sizes and resolutions. Additionally, its wide operating voltage range allows for compatibility with different regional power standards.

Detailed and Complete Alternative Models

  1. LA78040 - Similar to LA78041-E but with a different pin configuration.
  2. LA78042 - Enhanced version with additional features such as dynamic focus control.
  3. LA78045 - Designed for higher power applications, capable of driving larger deflection yokes.

These alternative models offer similar functionality to the LA78041-E and can be used as replacements depending on specific requirements and availability.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LA78041-E en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of LA78041-E in technical solutions:

  1. Q: What is LA78041-E? A: LA78041-E is a vertical deflection output IC commonly used in CRT displays and televisions.

  2. Q: What is the purpose of LA78041-E? A: The main purpose of LA78041-E is to generate the vertical deflection signal required to drive the yoke coil in a CRT display.

  3. Q: Can LA78041-E be used in other applications apart from CRT displays? A: No, LA78041-E is specifically designed for CRT displays and may not be suitable for other applications.

  4. Q: How does LA78041-E work? A: LA78041-E receives input signals from the horizontal deflection circuit and generates the vertical deflection current required to move the electron beam vertically across the screen.

  5. Q: What are the key features of LA78041-E? A: Some key features of LA78041-E include built-in pump-up circuit, thermal protection, low power consumption, and high output current capability.

  6. Q: What is the maximum output current of LA78041-E? A: The maximum output current of LA78041-E is typically around 1.8A.

  7. Q: Does LA78041-E require any external components? A: Yes, LA78041-E requires external components such as resistors, capacitors, and a yoke coil to function properly.

  8. Q: Can LA78041-E handle different display resolutions? A: Yes, LA78041-E can handle various display resolutions by adjusting the external components according to the specific requirements.

  9. Q: Is LA78041-E compatible with both NTSC and PAL systems? A: Yes, LA78041-E is compatible with both NTSC and PAL systems, making it suitable for use in different regions.

  10. Q: Are there any precautions to consider when using LA78041-E? A: Yes, some precautions include proper heat dissipation, avoiding excessive voltage or current, and following the manufacturer's recommended circuit design guidelines.

Please note that these answers are general and may vary depending on the specific application and requirements.