All flyback transformer numbers pinout equivalent | flyback

All flyback transformer numbers pinout equivalent
flyback
How to find flyback number -
In CRT (Cathode Ray Tube) TVs, the flyback transformer plays a crucial role in generating the high voltage necessary to accelerate electrons and create the images on the screen. Here's how it works:
1. *Voltage Regulation:* The primary function of the flyback transformer is to step up the voltage from the low voltage supplied by the horizontal output transistor (HOT) to a much higher voltage needed by the CRT. This high voltage is typically around 20-30 kV.
2. *High Voltage Generation:* The flyback transformer operates on the principle of electromagnetic induction. When the horizontal output transistor (HOT) switches off, the magnetic field collapses rapidly. This change in magnetic field induces a high voltage across the secondary winding of the flyback transformer.
3. *Voltage Rectification:* The high voltage induced in the secondary winding is alternating current (AC). This AC voltage is then rectified by a diode or a cascade of diodes to convert it into high voltage direct current (DC).
4. *Focus and Anode Voltage:* The high voltage generated by the flyback transformer is used for several purposes:
- It provides the anode voltage, which accelerates electrons towards the screen, creating the images.
- It supplies the focus voltage, which adjusts the focus of the electron beam to ensure sharpness in the image.
5. *Safety Precautions:* The high voltage generated by the flyback transformer poses a safety hazard. CRT TVs include safety features such as insulating coatings on the flyback transformer and a discharge circuit to safely discharge the high voltage when the TV is turned off.
Overall, the flyback transformer is a crucial component in CRT TVs, responsible for generating the high voltage needed to create images on the screen by accelerating electrons towards the phosphor-coated screen.
Finding the pinout and equivalent of a flyback transformer can be challenging because manufacturers often do not provide detailed datasheets for these components. However, here are some general steps you can take to identify the pinout and search for equivalents:
1. *Manufacturer's Label:* Look for any labels or markings on the flyback transformer that indicate the manufacturer's name, part number, or other identifying information. This can help you search for datasheets or specifications online.
2. *Visual Inspection:* Examine the flyback transformer for any markings or labels near the pins. Sometimes, manufacturers label the pins with alphanumeric codes or symbols that indicate their functions.
3. *Schematic Diagram:* Consult the schematic diagram of the CRT TV or monitor circuitry. The flyback transformer is usually identified on the schematic, and the pinout may be indicated with labels such as "HV" (high voltage), "FBT" (flyback transformer), or specific pin numbers.
4. *Online Resources:* Search online forums, electronics websites, or datasheet databases for information about the flyback transformer. Sometimes, other technicians or hobbyists may have shared pinout diagrams or equivalents for similar flyback transformers.
5. *Test Pins:* Use a multimeter to test the continuity between the pins of the flyback transformer. This can help you identify the primary and secondary windings, as well as any auxiliary windings or feedback circuits.
6. *Manufacturer Support:* If possible, contact the manufacturer of the CRT TV or monitor for technical support. They may be able to provide datasheets, specifications, or other information about the flyback transformer used in their products.
When searching for equivalents, keep in mind that flyback transformers are often custom-designed for specific applications, so finding an exact equivalent may be difficult. However, you can look for flyback transformers with similar specifications, such as input voltage, output voltage, frequency, and current ratings.
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