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Source: Lithium Battery Protection Board basic knowledgeFirst, the origin of the protection plateLithium-ion batteries (rechargeable) need to be protected, it is determined by its own characteristics. As the material of the lithium battery itself determines that it can not be overcharge, over-discharge, over-current, short-circuit and ultra-high temperature charge and discharge, lithium battery components will always follow a delicate protection plate and a piece of current safety device appears

We do not need to introduce the importance of DC converter in circuit design. Its main function is to convert the voltage into a fixed and effective voltage based on different functions,DC-DCConverter also has a variety of categories. Its main application fields are distributed in digital cameras and mobile phone portable products. A large amount of use makes some common problems in the DC-DC converter grad

PLL is a feedback circuit, the full name of the PLL is phase-locked Loop, referred to as the PLL. The function is to synchronize the clock on the circuit with the phase of an external clock. Because the PLL can realize the output signal frequency to the input signal frequency automatic tracking, so the phase-locked loop is usually used for the closed-loop tracking circuit. Phase-locked loop during operation, when the output signal frequency and the frequency of the input signal is equal, the out

Determine the labeling of the connected group based on the phase difference between the High and Low Voltage Winding wires. Source: Baidu Encyclopedia ": YY connected three-phase transformer, which has six connection groups: yy0, yy4, yy8, yy6, yy10, and yy2. The number is an even number. YD connected three-phase transformer, which has six connection groups: yd1, yd5, yd9, yd7, yd11, and yd3, with an odd number In order to avoid confusion in manufa

. Let's start with the power circuit.First, the function and composition of power circuitEach electronic device has a power supply circuit that supplies energy. Power supply circuit has rectifier power supply, inverter power and frequency converter three kinds. Most of the common household appliances use DC power. The simplest way to power a DC supply is to use a battery. However, the battery has a high cost, large size, need to change from time (battery is often charged) shortcomings, so the mo

A Power distribution System (PDS) is a subsystem that allocates power from power source to each device and device that needs power in the system. In all electrical systems there are power distribution systems, such as the lighting system for a building, an oscilloscope, a PCB, a package, a chip, and a power distribution system inside. Power distribution system on the PCBIn a typical product, the power distribution system consists of a voltage

determines the CPU performance. CPU clock speed = External frequency X frequency doubling. How high the clock speed is depends on your CPU constitution, heat dissipation conditions, and voltage settings. Based on my experience, lists the stable clock speed that some CPUs can achieve under the standard voltage of V and air cooling conditions (this is a general situation, data is for reference only, dependin

Building a differential amplifierAn op-amp and no feedback is already a differential amplifier, amplifying the voltage difference between the inputs. However, its gain cannot be controlled, and it's generally too high to be of any practical use. So far, we application of negative feedback to op-amps have resulting in the practical loss of one of the inputs, the ResU Lting amplifier only good for amplifying a, single

-phase electric currents. To allow the robot to work at three-phase currents, you may need a large-capacity, expensive converter that converts DC to AC power, or a wall outlet with a limited working range. You may not plan to use an AC motor unless your robot is fixed, just like a robot or a robot platform. If you are not planning to move the robot platform around like a puppy or something else... Voltage: Polarity (current will not change) It is mai

Power Supply Design of Radar Video Signal Simulator Based on TPS54310 [Date: 2008-10-13] Source: foreign electronic components by Liu Donghai, Ren Yongfeng, Li shengkun [Font:Large Medium Small] 　 1 IntroductionThe radar video signal simulator is an important device for debugging the radar signal processor. It has the analog environment and target video echo signal functions and is used to evaluate the performance of the radar signal processor. Because the analog generation

working principle of capacitive Buckthe working principle of capacitive buck is not complicated. The principle of his work is to limit the maximum operating current by capacitive resistance generated by the capacitance at a certain AC signal frequency. ExampleFor example, in 50Hz of power frequency conditions, a 1uF capacitance generated by the capacitive resistance of about 3180 ohms. When the 220V AC voltage is added to both ends of the capacitor, t

TVS main parameters of diodes--reprintThe best way to deal with the damage to the device by instantaneous pulses is to draw the instantaneous current from the sensitive device. The TVs diode is connected in parallel with the protected line on the circuit board, and when the instantaneous voltage exceeds the normal operating voltage of the circuit, the TVs diode has an avalanche that provides an ultra-low re

Modern integrated op amps (op amp) and instrumentation Amplifiers (In-amp) offer a number of benefits to design engineers compared to discrete devices. Although many clever, useful and attractive circuits are provided. This is often the case because a hasty assembly of the circuit ignores some very basic problems, causing the circuit to fail to achieve its intended function-or it may not work at all. This article will discuss some of the most common application problems and give practical soluti

The working principle of the switch power supply in this paper is the analysis of the principle of the switch power supply engineers of Electronic enthusiasts. Based on the analysis of a wide range of switch power supply cases, this paper introduces the single-positive excited switch power supply and Self-excited switch power supply, push-pull switch power supply, Buck switch power supply, boost switch power supply and reverse switch power supply.With the world's attention to energy problems, th

7805 Power Supply Circuit Diagram: 7805 pin chart 7805 typical application circuit diagram: Shows the typical application circuit of the 78xx series Integrated Voltage Regulator. This is a regulated power supply circuit that outputs positive v dc voltage. IC uses an integrated voltage regulator 7805, c1 and c2 are the input and output filter capaci

What to do if the laptop motherboard is out of power: First step. First, pin 14 and 15 short, and if the fan on the ATX power supply rotates, skip this step and look at the next one. If the fan on the ATX power supply does not rotate, use a multimeter to cross the +5svb end of the Pin9 to measure the Pin15 voltage, and if there is a +5v voltage, then there is a doorway, please see the next one. If there

Keywords: Identification, classification and measurement of Diodes I,Symbol:"D, Vd, ZD" Ordinary diode voltage regulator Diode Light Emitting Diode photosensitive diode (photoelectric) Fast Recovery DiodeIi. Classification of level 2 pipes: There are two types by material: one isSilicon Diode, And secondDiode. According to the manufacturing process, it is divided into a surface contact diode and a point junction diode. The following types

Basic Electronic concepts [Current] [voltage] [resistance] [Ohm's law] [power supply] [load] [circuit] [potential force][Cycle] [frequency rate] [capacitance] [capacitance resistance] [inductance] [inductance resistance] [impedance] [phase] [Phase Difference] Electric stream:The direct movement of charge is called current. In the circuit, the current is often expressed as I. The current is divided into two types: DC and AC. The size

The typical Ldo power supply itself consumes (vin-vout) *iout, so the larger the two, the greater the power consumption and the lower the efficiency.LDO, switching power supply DC's advantages and disadvantages (2008-11-06-22:40:23) Reprint Tags: power supply talk low dropout linear regulator, so the name thought, for linear regulator, can only be used in buck applications. That is, the output voltage must be less than the input

Basic principle and characteristics of Crystal Oscillator Generally, the crystal oscillator uses the capacitor three-end (kobiz) AC equivalent oscillator circuit of 1A. The actual crystal oscillator exchange equivalent circuit 1B, where CV is used to adjust the oscillation frequency, generally, it is implemented by using a variable-capacity diode with different reverse voltage, which is also the mechanism of volta