1.          Self-excited single arc switching power supply circuit

First, self-excited switching power supply circuit

The self-excited switching power supply is a switching circuit composed of power switching tube and transformer as the main components. Through self-excited oscillation, the direct current becomes a pulse voltage, which is coupled to the secondary side through the transformer, and then sent to the load circuit through diode rectification and capacitor filtering. In this circuit, because the switching tube plays the dual role of switching and oscillation, the control circuit is omitted, so the circuit is relatively simple.

Second, what are the advantages of self-excited switching power supply

Strong adaptability, not only suitable for high power supply, but also suitable for small power supply.

Because the load in the circuit is located in the secondary of the transformer and works in the flyback state, the input and output have the advantage of being isolated from each other.

The structure of the self-excited switching power supply is simple, and the switching tube in the self-excited switching power supply plays the dual role of switching and oscillating, and also eliminates the control circuit.

Self-excited switching power supply has a certain self-protection function, once the load is too heavy, it will inevitably destroy the feedback condition, and the oscillation will be reduced or stopped due to excessive loss.

3.7V self-excited single arc lighter produced by Shenzhen YLZ, the input end of this product is connected to DC 3-5V power supply, the output peak voltage is about 3.5KV, which can produce ≦ 8mm long purple high frequency high temperature and high voltage arc.

It can ignite paper instantaneously, ignite ordinary cigarettes within 3 seconds, and even a very thin wire can burn sparks everywhere (such as the scene of fine wire burning in oxygen during junior high school chemistry experiments). This product is mainly used for teachers and students teaching and DIY enthusiasts learning purposes.

For more information about arc, transformer, ion generator and high voltage pack, please consult Shenzhen YLZ Technology Co., LTD.