Color TV switch power supply schematic

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

100V, 250mA, surface mount, high speed switching diode

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Shunuo varistor / ESD varistor / product complete / Sunlord first-class agent

Overview:
The switching power supply has a high usage rate, and the superiority of the series-type regulated power supply cannot be compared.

High efficiency: The regulating tube of the switching regulator power supply works in the switching state. Therefore, the power consumption is small and the efficiency can be greatly improved. The efficiency is usually about 80% to 90%.

Light weight: The switch-type regulated power supply is often directly rectified by the AC voltage input from the grid, eliminating the need for bulky power frequency transformers.

Wide voltage regulation range: When the input AC voltage changes between 80 and 260V, it can achieve good voltage regulation effect, and the output voltage changes below 2%, while maintaining high efficiency.
Safe and reliable: In the switching regulator circuit, there are various protection circuits.

The filter capacitor has a small capacity: the capacity of the filter capacitor is greatly reduced due to the high frequency of the switch signal.

Low power consumption and low internal temperature rise: Since the transistor works in the switching state, it does not need to use a large radiator, and the internal temperature rise is low, so the reliability and stability of the whole machine are also improved to some extent.

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