Licky's Column

How to Locate the Identification Number on a PCB: A Guide to Circuit Board Serial Number Lookup

by Licky Li

How to Locate the Identification Number on a PCB: A Guide to Circuit Board Serial Number Lookup

Here are the common methods to locate the identification number on a PCB: Check the silk - screen layer3: The serial number is often printed on ...
Posted in Components Sourcing

Types of Arduino Seniors

by Licky Li

Types of Arduino Seniors

It seems you might have some confusion. You probably mean "Types of Arduino Sensors". Here are some common types of Arduino sensors: Environment...
Posted in #PCBA, Components Sourcing, module

Why is NPN preferred over PNP？

by Licky Li

Why is NPN preferred over PNP？

NPN (Negative - Positive - Negative) transistors are often preferred over PNP (Positive - Negative - Positive) transistors in many applications for...
Posted in Components Sourcing

Raspberry Pi Model B

by Licky Li

Raspberry Pi Model B

The Raspberry Pi Model B is a single - board computer developed by the Raspberry Pi Foundation. Here is an introduction to it: Hardware Specific...

USB type C Circuit path diagram

by Licky Li

USB type C Circuit path diagram

Here is the circuit path diagram and related pin description of USB Type - C3: Pin Name Description A1 GND Ground A2 SSTXp1 SuperSpeed d...
Posted in Components Sourcing

How does a mechanical clock keep accurate time?

by Licky Li

How does a mechanical clock keep accurate time?

A mechanical clock keeps accurate time through the following key components and principles: Escapement mechanism: This is the core component for...

Welding effect at different temperatures

by Licky Li

Welding effect at different temperatures

The welding effect is significantly influenced by temperature. Here's a look at how different temperatures affect the welding process and the resul...
Posted in #soldering, solder mask

Understanding Different Types of Filters in Electronics

by Licky Li

Understanding Different Types of Filters in Electronics

In electronics, filters are essential components that are used to selectively pass or block certain frequencies of an electrical signal. Here is an...

What problems will PCB encounter during the mounting process？

by Licky Li

What problems will PCB encounter during the mounting process？

Here are the common problems encountered during PCB (Printed Circuit Board) mounting, along with their causes and solutions: 1. Solder Joint Issues...
Posted in #soldering, solder mask

Rf transceiver remote control circuit

by Licky Li

Rf transceiver remote control circuit

1. Basic Working Principle Transmission End The user operates the remote - control buttons. Each button press corresponds to a specific digital...

STM32 vs STC32

by Licky Li

STM32 vs STC32

STM32 vs STC32 Here's a comparison between STM32 and STC32 microcontrollers: 1. Manufacturer STM32: Developed by STMicroelectronics, a global ...

Types of Transistor

by Licky Li

Types of Transistor

Bipolar Junction Transistor (BJT) Structure: It consists of three regions - emitter, base, and collector. There are two types of BJTs:...
Posted in Components Sourcing