How it works :
- Over-current protector (OCP) or Over Load protector (OLP). For example, if there is damage to flyback or def yoke, it will cause the load voltage B + over. If there is such a case the regulator will die protectionism so that IC is not damaged. For over current sensor is a resistor with a small value that is placed on pin-2 to the ground.
- Short protector. If the output voltage B + short, the regulator turns off protectionism.
- Over-voltage protectors (OVP). Regulators are not equipped with a surge protector so if the feedback path disconnected can cause the output voltage of the transformer switching regulator power up or damaged .. With OVP protectionist regulator will die if the voltage supply Vcc pin-4 rise above 22.5v.
- Thermal protector. Regulators will stop working if the temperature reaches 140 degrees Celsius.
read also ->>>> Troubleshooting STR IC Regulator Power Supply