27
2025
-
04
The working principle of a rectifier diode
Author:
Rectifier diodes utilize the unidirectional conductivity of semiconductors. In a diode, a P-type semiconductor and an N-type semiconductor form a PN junction. When a forward voltage is applied across the diode, i.e., the P-region is connected to the positive and the N-region is connected to the negative, the PN junction narrows, and current can flow smoothly. At this time, the diode is in the conducting state. When a reverse voltage is applied, the PN junction widens, and only a very small reverse leakage current flows, and the diode is in the cutoff state. In this way, through the unidirectional conductivity of the rectifier diode, the negative half-cycle of the alternating current can be cut off, allowing only the positive half-cycle to pass, thereby achieving the rectification function.
Working Principle
Characteristic Parameters
- Maximum Rectification Current This refers to the maximum average forward current that the diode can continuously conduct during long-term operation. This is an important parameter; exceeding this value may cause the diode to overheat or even be damaged. For example, the maximum rectification current of a 1N4007 rectifier diode is 1A.
- Reverse Breakdown Voltage This refers to the maximum reverse voltage that the diode can withstand. If the reverse voltage exceeds this value, the diode may be broken down and lose its unidirectional conductivity. For example, the reverse breakdown voltage of a 1N4007 is 1000V.
- Reverse Recovery Time When switching from the forward conduction state to the reverse cutoff state, the diode requires a certain amount of time to restore its cutoff characteristics; this time is the reverse recovery time. It affects the diode's performance in high-frequency circuits; the shorter the reverse recovery time, the better the diode's high-frequency performance.
Previous page
Next page
Previous page
Next page
Message
If you are interested in our products, please leave your phone number.
Contact Us
Telephone:0571-86698096
Address: Liming Community, Heshun Village, Jingjiang Street, Xiaoshan District, Hangzhou City, Zhejiang Province
E-mail:sales@hzhangxin.com
COOKIES
Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy
COOKIES
Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy
These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.
These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.
These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.
These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.
Copyright©2024 SaiJing Electronics Company Limited All Rights ReservedSEO Business License
