The qrp transceiver is connected to the crystal oscillator frequency counter

What is a capacitor and its role?

On 2018-12-13 15:47:12 in Capacitors

This article describes the role of capacitor ...

Gather voltage with ADC of STC microcontroller

On 2023-03-15 11:51:30 in Filter

This article explains how to measure voltage using the STC ADC, with a focus on understanding and configuring the appropriate settings and filters. ...

How to solve the malfunction of LED display?

On 2020-08-03 11:13:45 in IC Chips

This article describes the characteristics of the LED display. ...

How is the EMC of the isolation transformer designed?

On 2019-09-11 10:16:25 in Generally electronic component

This article describes the characteristics of the transformer. ...

What is the FPGA development process and how to use it after development?

On 2019-07-23 13:34:06 in Generally electronic component

This article describes the FPGA development process and how to use it after development ...

GND( ground) resistor value measured by a multimeter

On 2019-04-02 11:32:30 in Resistors

This article describes the GND( ground) resistor value measured by a multimeter ...

Application of several common diodes

On 2019-03-18 15:30:55 in Generally electronic semiconductor

This article describes the application of several common diodes ...

What is a MEG table and how to use it?

On 2019-01-04 11:24:23 in Knownlege

This article briefly introduces the MEG table and how to use it ...

Classification of printed circuit boards

On 2018-12-11 14:35:26 in Knownlege

This article briefly introduces classification of printed circuit boards ...

Structure and characteristics

On 2018-11-01 16:47:41 in Memory

LED digital tube also known as semiconductor digital tube ( Figure 1-1-5 ),it is a number of light-emitting diodes arranged in a fixed pattern and packaged together the most commonly used digital display one of the devices ...

ISO1540 and ISO1541 isolate the logic high and low input voltage levels of I2C devices

On 2019-07-29 11:17:46 in Generally electronic component

This article briefly introduces ISO1540 and ISO1541 isolate the logic high and low input voltage levels of I2C devices ...

How to detect a diode with using a digital multimeter?

On 2019-02-15 14:09:05 in Knownlege

This article briefly introduces how to detect a diode with using a digital multimeter ...

Several installation-related concepts of electronic components

On 2019-01-17 15:56:50 in Knownlege

This article describe several installation-related concepts of electronic components ...

What are the switches used in electrical appliances?

On 2018-12-13 11:54:57 in Knownlege

This article describes the role of the switches ...

What is an LED digital tube?

On 2018-10-29 15:10:23 in Photoelectric

A commonly used LED digital tube is composed of seven light-emitting tubes,which is composed of eight figures,with a decimal point inside the eight-section digital tube, Figure is shown as the digital tube shape and internal Structure Chart ...

What is an optical coupler?

On 2018-10-27 10:41:35 in Memory

Optical coupler also known as photoelectric isolator,referred to as optocoupler. Optical couplers use light as a medium to propagate the Telecom number ...

AMD Dual-Bridge RS880 Chipset Board Timing.

On 2019-12-17 11:06:05 in Discrete Semiconductor

This article describes the characteristics of AMD Dual-Bridge RS880 Chipset Board. ...

What is the relevant knowledge of the pressure sensor and its circuit?

On 2023-08-14 11:47:15 in Sensor

This article describes the characteristics of the pressure sensor circuit. ...

Surface Mount Technology and Challenges in PCBA Assembly

On 2023-07-20 14:14:44 in PCBA

Surface mount technology is an important link in the PCBA (Printed Circuit Board Assembly) assembly process. This article will introduce the basic principles of surface mount technology and common assembly methods, and at the same time discuss the challen ...

Comparison of Digital PDM and I²S Interfaces in MEMS Microphones

On 2023-03-04 10:59:17 in IC Chips

MEMS microphones commonly use PDM or I²S interfaces to communicate audio data, each providing their own advantages for different applications. It is important to consider the application's requirements for selecting the best interface. ...

How to use pointer multimeter to judge the capacitance value and the capacitance of large capacity electrolytic capacitors

On 2019-11-14 11:02:16 in Capacitors

This article describes the characteristics of using pointer multimeter to judge the capacitance value and the capacitance of large capacity electrolytic capacitors ...