At present, the development of small home appliance profession in China is uneven, and there are also many differences in product prices in the market. Small home appliance control boards are the core of home appliance quality, and many control board manufacturers do not provide corresponding solutions. What are the common solutions for small home appliance control boards? Below, the technical personnel from Boyint's smart home appliance control board manufacturer will share with us.

Common solutions for small home appliance control boards:

1. To prevent conduction disturbance in the control board circuit, a capacitor C can be connected at the inlet and outlet of the circuit, as shown in a brief diagram of the capacitor anti-interference circuit connection. The capacitor in the figure is classified as a relatively reliable capacitor, but a more reliable resistor is connected in parallel at both ends of the capacitor to prevent the power cord plug from being electrified for a long time when the power cord is unplugged.

2. The capacitance of household appliance control board capacitors should not be too large, and the filtering function of large capacity capacitors is relatively poor for filtering relatively high disturbance signals. Especially, the high-frequency function of polyester film capacitors is generally poor, and the high-frequency illumination characteristics of polyester film dielectric are far from that of ceramics or mica.

3. Nonlinear loads are a disturbance source with extremely wide frequency range, especially the disturbance caused by nonlinear loads. There are two main methods to suppress them. One is to start from the nonlinear load itself. In order to reduce disturbance, it is necessary to ensure the quality of the carbon brush itself and the smoothness of the commutator. At the same time, it is also necessary to protect the carbon brush from exerting appropriate pressure on the commutator, and ensure that the machine base is firmly fixed to prevent unstable operation caused by mechanical operation.

Article source: Small home appliance control board IC http://www.zbchip.com/