The color of the PCB surface is actually the color of the solder resistance. One is to prevent the occurrence of miswelding of components, a...

In a circuit with resistance, inductance, and capacitance, the obstruction to alternating current is called impedance. Impedance is commonly...

At present, in addition to the parts pin holes, mechanical holes, cooling holes and test holes, other through holes (such as Via holes) do n...

There are generally two cases of short circuit, one is that the pcb has reached a certain service life. The second situation is that the ins...