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 ...
Diode rectifier filter circuit，Diode half wave rectifier circuit
On 2018-09-12 13:00:54 in Memory
Power plant to send 50 Hz AC, after long-distance transmission, to the user is still 50 Hz AC, it is usually sent to industrial users 380 V three-phase AC, to ordinary civil users 220V single-phase AC. ...
what is a double base diode (single junction transistor)?
On 2018-10-26 17:09:25 in Memory
Double base diode,also known as single crystal transistor (UJT)is a three terminal semiconductor device with only one PN junction.the circuit symbol,internal structure and equivalent circuit of double base diode. ...
The main parameters of LED
On 2018-10-31 11:11:54 in Memory
The main parameters of LED include the maximum working current Im and the maximum reverse voltage Um ...
How do you choose isolation architectures, circuits, and components in power inverter applications?
On 2018-11-21 10:57:27 in Memory
Both motor and power control inverter designers have the same problem of isolating control and user interface circuits from dangerous power line voltages. ...
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 ...
The characteristics of Holzer element
On 2018-11-03 15:08:21 in Memory
The materials used in Holzer devices include germanium,silicon,InSb,InAs,GaAs and so on ...
Comparative analysis of LDO linear regulator and DC/DC device
On 2018-11-20 10:33:07 in Memory
LDO is a low dropout linear regulator, compared with the traditional linear regulator. Traditional linear regulators ...
how to detect the discoloration LEDs?
On 2018-10-26 16:40:18 in Memory
As shown in Figure 5-18,a circuit for detecting a discoloration light emitting diode (LEDs),a multimeter is placed in the RX10k2 block,and the two pin is connected. ...
the structure,type and detection method of the loudspeaker
On 2018-11-03 15:12:34 in Memory
one The structure of the loudspeaker.The loudspeaker,also known as the horn,is an electro-acoustic conversion device that converts the analog voice telephone number into a sound wave ...
The main characteristic of the diode is Danxian
On 2018-10-30 10:56:52 in Memory
It refers to the maximum positive current allowed to pass through the diode during long-term operation,which is related to PN junction area and external heat dissipation conditions. ...
Commonly used connector
On 2018-11-01 17:07:09 in Memory
The classification connector of the connector is also called a connector, which is usually composed of a plug ( also known as a male plug ) and a socket ( called a female plug ) ...
What is a bidirectional thyristor?
On 2018-10-29 14:25:17 in Memory
Bidirectional thyristor(TRIAC)is a new type of semiconductor device developed on the basis of one-way thyristor ...
Using integrated passive components in the micro-module SIP
On 2018-11-21 11:20:07 in Memory
Integrated passive devices are nothing new in our industry – they have been around for a long time and are well known. ...
the detection of the resistor
On 2018-10-31 10:55:57 in Memory
Will be two pen ( regardless of the positive and negative ) are connected with the two ends of the resistor can be connected to measure the actual resistance value ( in order to improve the measurement accuracy ...
Common parameters
On 2018-10-30 11:49:42 in Memory
peak height refers to the peak soldering PCB to eat tin height ( Figure 2-1 1 43 ) ...
How do you measure infrared light emitting diodes?
On 2018-10-26 16:48:19 in Memory
When detecting infrared light emitting diodes,there is a big difference between the pointer type multimeter and the digital multimeter ...
The main parameters of the first,triode
On 2018-11-01 14:25:02 in Memory
The current amplification factor is the current magnification,which is used to indicate the amplifying power of the transistor.According to the working state of the triode ...
Headphones and piezoceramic buzzers
On 2018-11-03 15:17:06 in Memory
Headset is also an electro-acoustic conversion device,which is similar in structure to an electric speaker,it is also composed of magnet,voice coil,vibrating diaphragm, etc,but the voice coil of the earphone is mostly fixed ...
How to detect the BTG thyristor?
On 2018-10-29 15:08:36 in Memory
Judging the electrode to place the multimeter in RX1K2 block,and the red and black stylus rotation to connect a pair of electrodes,when a pair of pins is measured to be low resistance ...
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 ...
how to detect a photosensitive transistor?
On 2018-10-27 11:13:49 in Memory
the pin of the pin identifies the pin arrangement of the photosensitive transistor as shown in Figure 6-8,the foot near the pin or the longer one is the emitter E,and the far or shorter foot of the foot is the collector C ...
How can Advance innovations improve the efficiency of data center memory?
On 2019-08-03 10:22:37 in Memory
This article describes the characteristics of the memory. ...
How to measure the color LED dot matrix display?
On 2018-10-29 15:33:54 in Memory
The color LED dot matrix display is the same as monochrome.You can use short columns or rows of methods to detect,just a little cumbersome operation ...
how to detect a varactor?
On 2018-10-26 17:08:18 in Memory
Because the positive resistance of the varactor diode is larger,the multimeter is placed in the RX 10k2 block,the red form is connected to the positive pole ...
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 ...
what is an infrared light emitting diode?
On 2018-10-26 16:45:24 in Memory
determine the order of the arrangement of the pins.The multimeter is placed in the R*1 thousand euro file ...