The most common three rectification problems and solutions to diode problems

The most common three rectification problems and solutions to diode problems

Common Question 1 of Rectifier diode: Quick Recovery. What should I do if the Rectifier Diode is too hot?

Answer: The fast recovery rectifier diode is very hot, even if it is replaced with a high-power fast recovery rectifier diode, it is still very hot. In this case, it is recommended to use an ultra fast recovery rectifier diode because the current signal frequency is high, and the current is the effective value. There may be high-frequency components in the signal, and the current peak value far exceeds the 2A value you measured, which leads to a particularly high peak power of the diode, The speed of the fast recovery rectifier diode cannot keep up, so the diodes of the fast recovery rectifier diode will become very hot.

Common Question 2 of Rectifier diode: How to Calculate the Power Consumption of Rectifier Diodes?

Answer: There is not much meaning in calculating the power consumption of rectifier diode. It is recommended that you consult relevant standard books and pay attention to the key parameters of surge current and uniform current. Because the voltage at both ends of the large electrolysis is 0 at the moment of startup, the current that can pass through the diode or bridge is extremely high. It is necessary to pay attention to whether it is within the range allowed in the standard book. Moreover, during normal operation, when the diode or bridge heats up, the allowable uniform current that can pass through will decrease, This is the same explanation in the standard book. Of course, there is a large margin for DIYER bridge selection, and there is generally no problem. Therefore, the key parameters of surge current and uniform current are very important; Common question three of rectifier diode: What are the common parameters of rectifier diodes?

Common Problem Three of diode: What are the common parameters of rectifier diodes?

Answer: The common parameters of rectifier diode include: Z large uniform rectifier current IF, Z high reverse operating voltage VR, Z large reverse current IR, breakdown voltage VR, Z high operating frequency fm, reverse recovery time tre, and zero bias capacitor CO. It is worth noting that due to manufacturing process constraints, even the same type of diode has significant parameter discreteness.