supercapacitor circuit

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Learn about the error of reset circuit and the principle of reset circuit in the circuit diagram of Wang Small board

The reset circuit of the stm32f411 chip in the Wang Gong's small board is as follows:In fact, this circuit is wrong, after the actual measurement, stm32f411 chip runtime reset pin is high, and in this circuit diagram, in fact, the stm32f411 chip runtime reset pin level to see the low level, according to this circuit, p

(note) Understanding of the Basic circuit unit of Circuit design (15)

A circuit diagram usually has dozens of or even hundreds of, their lines cross, the form is changeable, beginners often do not know where to start, how to read it. In fact, the electronic circuit itself has a strong regularity, no matter how complex the circuit, after analysis can be found, it is composed of a few unit circui

TTL Circuit COMS Circuit difference

The TTL circuit is the abbreviation for transistor-transistor logic circuit (transister-transister-logic), which is a digital integrated electricalA wide range of roads. It is manufactured with a bipolar process and features high speed, low power consumption and variety.CMOS is: A metal-oxide-semiconductor (metal-oxide-semiconductor) structure of transistors referred to as MOS transistors,There are P-type M

[Daily circuit diagram] 2, infrared remote control circuit principle design and analysis of "Turn + interpretation"

Landlord said: This is mainly about an infrared remote control circuit principle and design, part four is the focus, with the circuit diagram to illustrate the specific process-receive, count, meet the conditions trigger control circuit!From elecfans:http://www.elecfans.com/article/88/131/198/2015/20151215394306.htmlFirst, overview:  Infrared remote control of th

[Original tutorial of black gold] [serialization] [iboard Electronic School] [〇] Part 2 circuit diagram and Printed Circuit Board

I,What is circuit schematic The circuit schematic diagram is a schematic diagram that uses graphical symbols in a certain order to describe the basic connection relationship between the circuit and the device, regardless of the actual location or physical form, circuit diagram or schematic diagram. 1Basic schematic

How to distinguish the digital circuit from the analog circuit in the same schematic diagram

The digital circuit is the switching circuit; the device operating state: is not on or off, the general signal level just high and low. The height is "1", the low level is "0", the operating state is the pulse power. The analog circuit is the amplification circuit, the slightest change should be calculated, consider

Next short circuit + K short circuit Template

Although literally, the secondary short circuit is the same as the 2nd short circuit. However, this is not what I encountered in my questions. In some cases, you need to determine whether a short circuit exists. For example, there is only one path between u and v. Only the shortest path is short. The secondary short circuit

Power supply circuit switching and lithium battery charging circuit design

, the dielectric inside the battery can withstand a large amount of charging current, so the external can charge the lithium battery by a large amount of current, in order to shorten the charging time. The charging current in this phase is generally determined by a pin external to the charging management IC and a resistor. The resistance value is calculated based on the formula on the datasheet of the Charging management IC. 3. Constant Pressure Charging phase (already filled with more than 85%

[Daily circuit diagram] 6, see a stepper motor drive circuit "turn"

beats, but the rotation torque of the single four Beats is small. The step angle of the eight-beat working way is half of the Tanshi and the double four Beats, therefore, the eight-beat working method can maintain the high rotational torque and improve the control precision. The power-on timing and waveform of the Tanshi, double four-beat and eight-shot modes are shown in 2.a, B, and C respectively:Figure 2: Step Motor operation Timing waveform diagramThree, stepper motor drive

An integrated circuit electrostatic protection Circuit (ESD) process

A while ago a friend said they had a project in which there was a process circuit for ESD protection. I couldn't understand it at the time. But then the more I see the more I understand. Now share with you. is also a contribution to high-tech. The right of the regulator diode plays the role of the control voltage, when the regulator diode conduction, will be in its high over a current, the current through the resistance below, will cause the voltage o

The filter circuit of "analog circuit design"

1. The type of filter circuit and the advantages and disadvantages of each type.2. Filter circuit design (take Butterworth type low pass for example).3. According to the principle of low-pass filter circuit to promote the design of high-pass, band-pass, band resistance.=================================================================================1. The type of

Java short-circuit operators and non-short-circuit Operators

Basic Short-circuit operators are commonly used "" and "|", which are generally called "Conditional operations ". Class logic {Public ststic void main (string [] ARGs ){Int A = 1;Int B = 1;If (A System. Out. println ("Oh, that's impossible !!! ");} Else {System. Out. println ("that's in my control .");}}}The operator checks whether the first expression returns "false". If it is "false", the result must be "false" and no other content is checked."A/

HDU 1878. Euler circuit "Oralu and the first contact of the European pull circuit" "August 2"

Euler circuitProblem description is a loop that does not leave the pen on the paper, but only once per side of the picture, and can return to the starting point. Now given a diagram, ask if there is a Euler circuit?The input test inputs contain several test cases. The 1th line of each test case gives two positive integers, namely the number of nodes N (1 Beam.Output takes one row for each test case, and outputs 1 if the Euler loop is present, otherwis

[Electronic Circuit] China's oil price circuit description

Bytes ------------------------------------------------------------------------------------------------------------------------------ [Electronic Circuit] China's oil price circuit description [conversion] Bytes ------------------------------------------------------------------------------------------------------------------------------ As shown in: Resolution: The following

High-impedance state; What is a tri-state gate? Three-state logic and non-gate circuit and three-state gate circuit

Http://www.elecfans.com/dianzichangshi/200805269451.htmlHigh-impedance state: is neither higher nor low, if the high impedance state and then input the next level of the circuit, no impact on the lower circuit, and not the same, if using a multimeter is likely to be high level also may be low level, with the things that follow it fixed.Tri-State output gate Circuit

2016.7.29 Short circuit operation (logic operation is the most common one in short-circuit operation)

Written in front of the knowledge:Boolean cast:Except for Nan, null, "", Undefined, 0, function, which are false, the others are true;About conversion, and so I'll write another one, dedicated to string, int, and Boolean conversions.symbols for short-circuit operations: | | ! or with non-the principle of short-circuit operation: when there are more than one expression, the value of the expression on the rig

Bav99/ESD Interference or discharge damage circuit/interface Protection Circuit

Bav99/ESD Interference or discharge damage circuit/interface Protection Circuit Bav99 is designed for the purpose of ESD. It is afraid that the signal line is vulnerable to ESD Interference or discharge damage the circuit. Because these interfaces are interconnected with each other, it is afraid that the received signal has large static electricity. When several

15199 km of the cargo carrier circuit and 15199 of the cargo carrier circuit in Cities in China

15199 km of the cargo carrier circuit and 15199 of the cargo carrier circuit in Cities in China 15199 km of the cargo carrier circuit in 34 Chinese cities Find the longitude and latitude of 34 Chinese cities on the internet, calculate the sphere distance between cities, create a nearby connected graph, and use the touch hole Backtracking Method to Calculate the

Logic & and short-circuit && in Java, logic | and Short Circuit | | The difference

The difference between logic short-circuit in Java is that logic needs to judge the two conditions on the left and right of the symbol, and the short-circuit If the symbol is true on the left, it will be judged right; if The symbol left is false, then go else.eg. Public classDemo { Public Static voidmain (String [] args) {intA = 4; intb = 3; intc = 0; if(A//ErrorSystem.out.println ("Nihaoma"); }Else

Euler circuit base HDU1878 Euler circuit | | and the difference set

Welcome to the Bestcoder-every Saturday night (with rice!) )Euler circuitTime limit:2000/1000 MS (java/others) Memory limit:32768/32768 K (java/others)Total submission (s): 10544 Accepted Submission (s): 3845Problem description is a loop that does not leave the pen on the paper, but only once per side of the picture, and can return to the starting point. Now given a diagram, ask if there is a Euler circuit?The input test inputs contain several test ca

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