circuit analysis for dummies

demodulation after the output, after R2, C3 integral (filtering each group of pulses in the encoding information), increases from the IC2 1 feet, as the lC2 Count Pulse (about 10 pulses per second). 1c2 after receiving 8 pulses (about 0 8s), its 6 feet become low or high, so that V and VT on or off, the load (electrical equipment) work power is connected or disconnected.Five, Component selection:RL-R5 Select "/4w Carbon Film resistor or metal film roar resistance device.C1 Select a polyester ca

test once, unexpectedly started, and also passed the self-test into the desktop. After repeated tests found that, as long as the connection to the power supply, the computer can not start. Fault analysis: The author suspected that the auxiliary power supply circuit of the video card has short circuit. But there is no multimeter on hand and no second graphics ca

Sinox, Macau, China many platform CAD graphics, PCB board, IC I know, HDL hardware description Language narrative, circuit simulation and design software, elemental analysis table, can open the eyes of the world.Recent research Sinox the implementation of Windows edition Protel,powerpcb,autucad, which is considered very cumbersome. On the other thought, Sinox the following in fact there are a lot of auxilia

end point voltage method. Ask for E(2) The Independent power supply is set 0, the current source is disconnected, the voltage source short-circuit . Seeking R2.7.2 Norton theoremAny active two-terminal linear network can be substituted by an ideal current source of current and internal resistance R0 parallel power supply.(1) External short circuit, get is, beg I(2) Ideal voltage source short

Advantages of lithium battery related structures and Protection Circuit Analysis Scheme Reprinted from: http://news.cecb2b.com/info/20120314/33451.html Lithium ionBatteryWith its excellent features, it is widely used in:Mobile phones, video recorders, laptops, cordless phones, power tools, remote control, electric toys, cameras, and other portable electronic devices. 1. Lithium Battery It can be c

3.3V-5 V level conversion circuit For example, if the left side is connected to a 3.3 v cmos level, it can be an I/O port of STM32 or FPGA, and the right side output is 5 V to realize conversion from 3 V to 5 V. Analyze the functions of each resistor (the core idea is to hold the transistor's Vbe on at a constant value of about 0.7V ): If there is no R87, then when the US_CH0 high level is directly added to the BE of the transistor, where is the vo

This article mainly introduces the main causes and countermeasures of chip capacitor (multilayer slice ceramic capacitor) rupture and failure.There are three main points:1. The main cause of problems such as rupture and short circuit is not due to the chip capacitor itself, but more factors related to the whole installation and welding process of the capacitor.2. rupture and failure are the most common and major problems encountered in the use of SMD

schematic diagram of the typical circuit: We also had a problem when we were drawing this circuit, The components of the inductor position between the network label VDD3.3 and the VCC3.3 have not been identified at first, because we look for a lot of asm1117-3.3 circuits, there are inductance, but also the use of resistors, and then after careful reading the chip manual and asked the relevant knowledge

MP1584 step-down converter Buck converter produced by the US-sourced semiconductor http://www.monolithicpower.com/. Its core is buck conversion! The following is an analysis of the buck circuit.The buck Circuit also belongs to the switching power supply. By adding a switching signal PWM to the MOS tube Q to control the on and off of the switching tube, the inductor and capacitor charge and discharge, the d

) returns an n-by-n matrix of random numbersThe following statement returns a line vector consisting of a symbolic variable.>> sym (' [R12 r13 R14 r23 r34 r25 r35 r45] ')Ans =[R12, R13, R14, R23, R34, R25, R35, R45]Further analysis, put it in the diagonal position of the matrix, the resulting matrix is the shape of this:>> symr = sym (' [R12 r13 R14 r23 r34 r25 r35 r45] ');>> diag (SYMR)Ans =[R12, 0, 0, 0, 0, 0, 0, 0][0, R13, 0, 0, 0, 0, 0, 0][0, 0, R

PA6, PA7 usb_id usb_on all pull highUSB_ID: High voltage trigger external USB for chargingUSB_ON: Used to test the sub has been powered, plug the USBA: Enter Charger_host_mode instructions have been plugged into USB. Circuit Start-up circuit analysis: Shutting down functions in the Poweroff function Hal_gpio_writepin (Dc3v2_en_gpio_port,dc3v2_en_pin,gpio_pin_rese

The transistor is a current amplifier, which has three poles, namely the collector C, the Base B, and the emission pole E. It can be divided into two types. The basic principle of the transistor amplifier circuit is described in this example. The following analysis is only applicable to the silicon transistor. As shown in, we call the current from base B to the emission pole e the base current IB, and the

The working principle of the interrupt controller between different CPU systems is quite different, this article is the sister of "the analysis of circuit breaker in Linux MIPS64R2 PCI", mainly analyzes the principle, interrupt configuration and processing process of broadwell-de x86_64 APIC. And try to answer the following questions: Why is the x86 used in the IO-APIC/LAPIC framework, and what is

Circuit Simulation and Analysis When designing the PWM wave RC filter circuit, the time constant should be determined according to the response time requirement, and the RC time constant should be far greater than the PWM period. The RC charge/discharge time constant should be equal as much as possible. In addition, the RC parameters should be determined accor

analysis of secondary short-circuit and sub-niche tree-forming algorithm This article is not original, tribute to the original, address: https://blog.csdn.net/u010016150/article/details/12992571 [secondary short path] The second shortest path can be regarded as a special case of K-short path problem, and it is more complicated to find the yen algorithm for K-short path, and it can have a more simple method