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1. stm32f103 ADC In this example, the pa1 pin of the stm32f103 chip is used to test the analog input voltage value. Article 31st, pin definition: We know that pa1 uses adc1 Channel 1. The Clock Tree is shown in the following figure: Adc1 can be divided into 2, 4, 6, and 8, and the ADC input clock cannot exceed 14 MHz (see the stm32 reference manual rm0008 chapter 11th ADC ). // Initialize the ADC // Here we only use the rule Channel as an ex

Management Setup) The default value of resume on Ring/lan is "Enabled." Think of the inside cat inside the chassis-is not the summer night voltage instability, so that the cat received the wrong signal and caused the host to automatically power it? Restart now to the CMOS settings view, Sure enough, the resume on Ring/lan item is set to "Enabled" and then changed to "Disabled" after the restart, the failure to eliminate. Revelation: The author of th

If an edge is feasible, then after deleting the edge, the remaining figure is a binary graph and the sides of the edge have the same color.Then the feasible edge must belong to the intersection of all odd rings, and not belong to any even ring.Pick a tree, for a non-tree edge, it forms a ring:If even rings, the edges on the ring are marked as not selectable.For odd rings, add one to the number of odd rings passing through the edges of the ring.You can use the tree chain to maintain the prefix an

#include using namespacestd;structin{Long LongA, B; DoubleT;} s[100005];BOOLCMP (in P, in Q) {if(P.T q.t)return true; Else if(p.t = = q.t P.a q.a)return true; return false;}intMain () {Long LongN, p; scanf ("%lld%lld", n, p); Long LongSUM1 =0; for(Long Longi =0; I ) {scanf ("%lld%lld", AMP;S[I].A, s[i].b); Sum1+=s[i].a; S[I].T= s[i].b *1.0/s[i].a; } if(Sum1 p) {printf ("-1\n"); } Else{sort (s, S+N, CMP); //for (int i = 0; i //printf ("%lld--a%lld--b%.9f--t\n\n", S[i].a, s[i].b, s[i].t);

YK-JJW (JSW) Series Product OverviewYK-JJW Series single-phase precision AC power supply, using the International Advanced Sine Energy Distribution program Power Regulation technology, represents the latest development level of AC voltage regulator technology. The circuit consists of sinusoidal energy distribution and high-power filter. It has the advantages of high overload capacity, good reliability, strong anti-jamming ability, high efficiency, lon

Csw_countdelete idle_count}probe timer.s ($1) {print_cswtop () printf ("--------------------------------------------------------------\ n")}After saving to CS.STP, execute with STAP CSWMON.STP 5 command.8, the discovery is the discover process in the repeated and the system process to switch. This consumes a lot of resources.9, from the online search for some of the ways to reduce the switching process:The development was then changed: the number of threads was doubled and controlled in a proce

The laptop's power adapter does not have an output voltage, which can be initially judged to be a problem with the adapter circuit of the power supply. The enclosure is opened to reveal that the safety pipe in the adapter has been burnt black, indicating a short-circuit in the power supply circuit. Using Multimeter to Measure field effect switch tube drain electrode to ground resistance, resistance is close to 0, the field effect switch Q2 rem

Many users in the use of computers, have encountered the display jitter and black screen situation. In fact, this situation may be due to the power supply voltage instability caused by the monitor. Power transformers and other coils if damp, also easy to produce leakage. If the use of the environment is too humid, the display of parts are susceptible to the phenomenon of discharge, the machine components damp easily rust, corrosion, serious ti

By dynamically changing the CPU voltage, you can adjust the CPU frequency. The CPU clock frequency can be changed dynamically by changing the clock multiple. Some processors with adjustable CPU main frequency clock multiples can switch dynamically between different main frequencies and operating voltages without the need for kernel or user intervention. Terminology Definition Policy (Policy): In the system, users can only choose the maximum frequency

In many typical circuit designs, the ad converter will have one before it. This follower is not necessary, in order to understand the role of the follower on the basis of their own circuit characteristics. First, the role of the follower is analyzed here: The function of the voltage follower here is the impedance transformation function. Impact One: The input impedance becomes very high, so that the impact on the input signal can be very small. Imp

The larger the physical memory, the larger the setting. The default is 2402, tuned to 512-1024 bestinnodb_additional_mem_pool_size=4m defaults to 2MInnodb_flush_log_at_trx_commit=1(set to 0 is to wait until the innodb_log_buffer_size queue is full

1.PNP Tube Amplification Principle: When the vcvb, and Ve>vb, the collector junction and the transmission junction are biased, the pipe work in saturation, at this time the pipe pressure drop is about 0.1-0.3v. IC=VCC/RC, that is, the collector

Failure analysis: From the phenomenon, the USB device and motherboard interface are not damaged, suspected because of accidental power failure caused system setup error. For this situation is generally due to power supply problems, because the USB

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and other devices, H-magnetic diode, Hall element in K-open magnetic circuit, L-high-frequency high-power transistor, Hall element in M-closed magnetic circuit, p-photosensitive device, Q-emitting device, R-small-power thyristor, S-small-power switch, T-high-power thyristor, U-high-power switch, X-multiplier, Y-rectifying diode, Z-regulated diode. Part 3: Add a digit or a letter to indicate the registration number. Three digits-the registration number representing the general semiconductor devi

Parameter Interpretation and selection of common op ops, Parameters There are many parameters for Integrated Op-ops. The main parameters are DC and AC indicators, and all chips have limit parameters. This article takes NE5532 as an example to briefly explain each indicator. The following content is not only captured from the NE5532 Data Manual, but also from the network.Limit Parameter It is mainly used to determine the design of the power supply for the op amp (the number of V

Parameter Interpretation of operational amplifier and selection of Common Operational Amplifier There are many parameters for Integrated Op-ops. The main parameters are DC and AC indicators, and all chips have limit parameters. This article takes NE5532 as an example to briefly explain each indicator. The following content is not only captured from the NE5532 Data Manual, but also from the network.Limit Parameter It is mainly used to determine the design of the power supply for the op amp (the n

The difference between TVs diodes and Zener diodesWhen the TVs tube exceeds its withstand voltage, it will momentarily short-circuit the reaction speed at the NS level,And the regulator is the regulator, more than its voltage regulator value, as long as the power does not exceed its tolerance value, it will be stable in its regulated value range.TVS is a transient suppression diode that is mainly used to su

I. Glossary: 1. Three-phase alternating current (AC): An electric power system consisting of three AC circuits with the same frequency, equal potential amplitude, and Mutual Difference of 120 °. 2. One-time device: the device directly related to power generation and distribution is called one-time device. Including various high voltage circuit breakers, isolating switches, busbars, power cables, voltage tra

Source: Power Supply NetworkKeywords: MOS Structure switch Drive Circuit When using MOS to design a switching power supply or motor drive circuit, most people will consider the mos on-resistance, maximum voltage, maximum current, and so on. Many people only consider these factors. Such a circuit may work, but it is not excellent. It is not allowed as a formal product design. The following is my summary of the basis of the mos and MOS driving circuit.