Complete Guide to PCBs: Types, Purposes, and Applications
Learn about PCBs (Printed Circuit Boards): types, purposes, and applications. Complete guide covering single-layer, multi-layer, flexible PCBs and more.
The Principle of MOSFET Realizing AC Solid-state Relay
AC solid state relays (SSRs) have been around for a long time. However, these early devices were not suitable for all situations, for example, because of severe distortion around the zero crossing of the waveform. MOSFET-based SSRs have been around since around 1984, when International Rectifier patented a MOSFET circuit capable of handling low-distortion AC. It is not known if this was the earliest example, but it was probably close.
Differences between TVS produced by different manufacturers
TVS devices of the same specification from different manufacturers should not be replaced arbitrarily. The most obvious difference between them is that their failure rates are likely to be different, and even significantly different. What is the reason? The overall machine failure caused by the device itself often occurs in two aspects: 1) Design issues […]
Free ESD Protection Circuit—discharge Teeth
When a peak voltage is input, there is a potential risk of IC pins being damaged. Peak voltage often comes from the superposition of reverse electromotive force pulses generated by ESD, hot swapping, and inductive load disconnection.
Seven Design Points to Make Your PCB Design Better
PCB (Printed Circuit Board), also known as a printed circuit board, is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. Because it is made by electronic printing, it is called a “printed” circuit board. As electronic equipment becomes more and more complex, the requirements […]
Optimizing Electronic Device EMI: Spectrum Allocation Strategies for Crystal and Power Switching Frequencies
In the design of complex electronic devices, the frequency selection of crystals and switching power supplies is by no means trivial. When multiple devices of the same frequency coexist, the superposition of their fundamental frequency and harmonics will significantly amplify the EMI noise, putting the equipment at risk of exceeding the standard. In this article, […]