The problem of CPLD driving MAX7219
On 2023-03-15 13:45:13 in IC Chips
CPLD is used to drive MAX7219 IC, making it possible to control up to 64 individual LEDs with minimal control pins from a controller. It is simpler to program and has higher speed than microcontrollers. ...
how to detect a two-way trigger diode?
On 2018-10-26 17:02:25 in Memory
use the multimeter to place the multimeter in the RX1~RX10kQ gear and measure the positive and reverse resistance of the bidirectional trigger diode ...
What is the basic principles and roles of loudspeakers ?
On 2018-12-15 11:35:54 in Generally electronic component
This article describes the basic principles and roles of loudspeakers ...
What are the characteristics of the test transformer?
On 2021-05-20 10:33:41 in Transformer
This article describes the characteristics of the transformer. ...
CPU power supply principle.
On 2019-11-16 10:37:22 in IC Chips
This article describes the characteristics of CPU power supply principle. ...
Method of detecting fixed capacitors.
On 2019-11-06 11:05:23 in Capacitors
This article describes the characteristics of method of detecting fixed capacitors ...
How to detect the fixed capacitors?
On 2019-07-02 15:43:54 in Capacitors
This article introduces some methods of detecting fixed capacitors. ...
how to detect the LED emission tube?
On 2018-10-26 16:31:21 in Memory
The use of multimeter to detect LED luminous platoon is mainly to check whether the LEDs are good ...
Why do the monitors exhibit different capacitance bulging?
On 2019-07-11 10:28:54 in Photoelectric
This article briefly introduces the reasons of monitors exhibiting different capacitance bulging ...
What are the main parameters of the varistor?
On 2019-01-09 13:22:09 in Resistors
This article describes the main parameters of the varistor. ...
FPGA cross-border acquisition speeding horizontal integration vertical innovation seeking common ground while reserving differences
On 2019-07-27 11:28:39 in Generally electronic component
This article describes FPGA cross-border acquisition acceleration horizontal integration vertical innovation seeking common ground while retaining differences ...
What is an electromagnet?
On 2018-12-27 14:35:05 in Generally electronic component
This article briefly introduces the electromagnet ...
What are the applications of decoupling capacitors in single-chip circuits?
On 2019-09-26 10:22:42 in Capacitors
This article describes the characteristics of the capacitors. ...
What is a varactor and how to detect it?
On 2019-01-04 10:52:48 in Generally electronic semiconductor
This article describes the basic principles of the varactor and detection of varactor ...
Transformers on the ATX power supply board.
On 2019-03-15 11:32:04 in Transformer
This article writes about transformers on the ATX power supply board. ...
What are the features and use note of CMOS circuit?
On 2019-01-09 14:07:06 in Knownlege
This article describes the features and use note of CMOS circuit ...
Do you know the classifications of power amplifiers?
On 2019-11-27 10:29:26 in IC Chips
This article describes the characteristics of the power amplifiers. ...
How should the magnification of the triode amplifier circuit be calculated?
On 2019-09-07 11:57:58 in Generally electronic semiconductor
This article describes the characteristics of the triode amplifier. ...
Comparative analysis of 5 types of radiators for LED lighting fixtures
On 2019-07-09 13:56:22 in Photoelectric
This article describes Comparative analysis of 5 types of radiators for LED lighting fixtures ...
What are the performance characteristics of the piezoelectric ceramic buzzer and how to detect it?
On 2018-12-25 10:39:23 in Generally electronic component
This article briefly introduces the performance characteristics and detection of the piezoelectric ceramic buzzer. ...
Characteristics of White LED
On 2018-12-01 11:07:51 in Photoelectric
This article describes the characteristics of White LED ...
How to detect and repair ceramic filters?
On 2018-12-20 14:47:43 in Generally electronic component
This article describes how to detect and repair ceramic filters ...
What are the main parameters and types of LEDs and how to detect LED?
On 2018-12-14 13:55:28 in Photoelectric
This article writes about the the main parameters and types of LEDs and how to detect LED ...
How to detect a transformer?
On 2018-12-20 11:11:48 in Generally electronic component
This article describes how to detect a transformer. ...
What are the electromagnetic compatibility problems often encontered in medical equipment?
On 2021-05-10 10:23:21 in Generally electronic component
This article describes the characteristics of the electromagnetic compatibility. ...
How to design the ultrasonic signal transmitting and receiving circuit based on AT89S52 single chip microcomputer?
On 2019-10-08 18:04:13 in IC Chips
This article describes the characteristics of the MCU. ...
What issues should pay attention to before using the multimeter?
On 2019-02-14 11:23:38 in Knownlege
This article introduces some issues should pay attention to before using the multimeter ...
What are the characteristics and parameters of the photosensitive resistor?
On 2019-01-08 15:44:42 in Generally electronic semiconductor
This article briefly introduces the characteristics and parameters of thephotosensitive resistor. ...
What is a universal bridge?
On 2019-01-05 10:24:47 in Knownlege
This article introduces the universal bridge. ...
What is the step-down working principle of capacitor?
On 2019-01-19 16:30:32 in Capacitors
This article writes about the step-down working principle of capacitor. ...
How to use a resistance strain gage load cell?
On 2020-12-18 10:49:50 in Sensor
This article describes the characteristics of the sensor. ...
Embedded DSP chip signal generator
On 2023-03-16 11:40:44 in IC Chips
Embedded DSP chips offer high precision and low power consumption, making them reliable and energy-efficient for a variety of applications. ...
How to replace the transistor in application?
On 2018-10-27 11:03:32 in Knownlege
the principles that should be paid attention to when replacing transistors are as follows.A high limit parameter is used to replace the lower product body tube. ...
What are the tips for selecting TVS?
On 2021-07-15 10:51:19 in Generally electronic component
This article describes the characteristics of the TVS. ...
What is the relationship between the charging head and the fast charging function of the mobile phone?
On 2021-07-30 14:55:46 in Photoelectric
This article describes the characteristics of the control. ...
How to choose the right LED street lamp power supply?
On 2022-02-21 11:15:30 in Discrete Semiconductor
This article describes the characteristics of the power supply. ...
If there is no same type of pipe in use, how to replace it?
On 2018-10-26 15:50:14 in Relays
Diodes are generally not good repair, damage can only be replaced. In selecting diodes, we should pay attention to the following principles. ...
The LED display does not work, and the cause of the fault is determined and eliminated according to the flashing green light of the sending card.
On 2019-06-13 16:14:11 in Generally electronic semiconductor
The LED display does not work, and the cause of the fault is determined and eliminated according to the flashing green light of the sending card. ...
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 the effect of RS-485 in communication cables?
On 2023-05-16 14:17:08 in IC Chips
This article describes the characteristics of the cables. ...