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Digah House Company's Security Door Handles and Locks

Digah House Company's Security Door Handles and Locks

2021-09-17
Digah Company
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Benghazi Trial Set to Take Closed-door Testimony From CIA Security Personnel
Benghazi Trial Set to Take Closed-door Testimony From CIA Security Personnel
WASHINGTON - The trial of the accused mastermind of the September 2012 attacks that killed four Americans at a U.S. special diplomatic mission and CIA annex in Benghazi, Libya, will turn this week to testimony by two active CIA security force operatives, another who was at the assault and the widow of another killed in the assault. Beginning Tuesday under unusual security measures, two CIA witnesses will testify under the pseudonyms "Edwards" and "Charles" in a courtroom closed to nearly everyone but the defendant, Ahmed Abu Khattala, 46; the lawyers for each side; jurors; U.S. District Judge Christopher R. "Casey" Cooper of Washington; and courtroom personnel, according to in-court discussions last week among Cooper, prosecutors and defense lawyers.As has been done since the trial started Oct. 2, a live audio stream of the pair's testimony will be fed to two other rooms at the federal courthouse in Washington for observers, including journalists.Video feeds that have been provided in the ancillary rooms will continue to show the judge, attorneys, exhibits and defense table, but a camera showing the witness stand will be turned off during the testimony by the two active CIA security operatives, prosecutors said. Prosecutors described the upcoming testimony as coming from "OGA" witnesses - a shorthand for "other government agency" that generally is used as a reference to the CIA. The role of CIA security personnel and the location of the annex have already been acknowledged in court filings and in open court at Abu Khattala's trial. The Justice Department asked for the closed hearing to protect the men's identities because they continue to work as secret, undercover security for the agency, prosecutors said. Courts in the past have allowed CIA witnesses to testify behind partitions or while wearing light disguises, such as wigs, false beards or eyeglasses.Cooper approved another atypical request - to which the defense agreed - to allow "front office" representatives of the pair's employer to sit in the courtroom for the testimony because of the organization's stake in the trial. Court transcripts of the discussions about that request show that each side thought having some people sitting in the public benches in the courtroom might avoid signaling to jurors that the courtroom had been cleared for a special purpose, a cue that could be prejudicial if it affected how jurors weighed the testimony they then would hear.The court released transcripts of last week's proceedings Friday.The transcripts include muffled conversations at the bench that are out of earshot of the jury and of anyone sitting in court, but become part of the public court record. The transcripts also include other discussions - that occur in front of any trial watchers but after jurors have been moved out of the courtroom - in which the parties in the case and the judge hash out scheduling and trial administrative matters. Prosecutors also are posting exhibits that have been introduced at the end of each trial day.The CIA's secret contractor security force, called the Global Response Staff, guarded the annex and helped protect the mission, where U.S. Ambassador J. Christopher Stevens and State Department communications aide Sean Patrick Smith were killed, witnesses and prosecutors have said in court. GRS members Glen A. Doherty and Tyrone S. Woods died at the annex, where they fought alongside other GRS and State Department security personnel.Abu Khattala, a Libyan national who led a brigade of the Ansar al-Sharia militia, which the United States has designated a terrorist organization and holds responsible for the Benghazi attacks, has pleaded not guilty to 18 charges including conspiracy to support terrorism, murder, attempted murder and damaging U.S. facilities. He faces life in prison if convicted.The trial is set on Wednesday to hear again from the State Department's chief regional security officer at the small, special diplomatic mission in Benghazi at the time, Alec Henderson.He had testified for several hours before the trial broke Thursday for the weekend and the federal holiday Monday. The federal trial in Washington, five years after the attacks, returns a focus to the criminal prosecution in an episode that became a political lightning rod during last year's presidential campaign for Hillary Clinton, who was secretary of state in 2012.It also poses a high-profile test of U.S. counterterrorism policies developed in recent years to capture alleged terrorists overseas and interrogate them for intelligence purposes, while preserving the right to prosecute them in civilian court.Abu Khattala was captured in Libya by U.S. commandos in June 2014.Henderson has given the 15-member Washington jury - 12 plus three alternates - a blow-by-blow account of the attacks the night of Sept. 11 and Sept. 12, 2012, using excerpts of closed-circuit video surveillance from multiple security cameras around the Benghazi diplomatic mission, which was overrun starting at 9:42 p.m. The CIA's secret post, to which GRS and State Department security personnel evacuated afterward, subsequently came under attack after midnight. Outside the presence of the jury, defense attorneys said Thursday that they were waiting for the government to disclose to them unspecified but agreed-upon snippets of classified documents for Henderson's cross-examination.In the transcripts, prosecutors said they expect testimony later this week from Dorothy Narvaez Woods, a Navy veteran, University of Maryland-educated dentist and the widow of Tyrone S. Woods. Also expected is testimony by GRS member and U.S. Marine Corps veteran John "Tig" Tiegen, 41, prosecutors said.Tiegen will testify openly because his name is well-known, prosecutors said, identified in a feature film and book about the Benghazi incident co-written by several GRS members. GRS contractors provided security to CIA staff seeking to track Libyan stockpiles of rocket-propelled grenades and other weapons. They also backed up a low-profile and lightly staffed State Department special mission that Stevens used when in Benghazi. It relied on a handful of U.S. diplomatic security agents and a larger Libyan contract force.Last week, in poignant testimony, Peter Sullivan, who is married to Stevens's sister, Ann Stevens, recalled his brother-in-law as a dedicated "man of peace."Stevens was "trying to forge a coalition among factions" in Libya, Sullivan recalled the ambassador saying, including a description he said Stevens relayed roughly as working with "about 156 [groups] with an average of seven people trying to put together a government.""He roamed a lot of the land. He moved around with little security, to some people's objection, but that's the way he was. He was a man of peace," Sullivan said. "He got something like 40,000 letters from Libyans after his death. They loved him there."
Summary of UC3842 Chinese Data (UC3842 Pin Diagram, Function, Working Principle and Typical Applicat
Summary of UC3842 Chinese Data (UC3842 Pin Diagram, Function, Working Principle and Typical Applicat
UC3842 pin diagram and functionUC3842 is a high-performance fixed frequency current mode controller, including error amplifier, PWM comparator, PWM latch, oscillator, internal reference power supply and undervoltage locking. Its structure diagram is shown in Figure 1.The functions of each pin are introduced as follows:Pin 1 comp is the output of the internal error amplifier. Usually, a feedback network is connected between this pin and pin 2 to determine the gain and frequency response of the error amplifier.The 2-pin feed back is the feedback voltage input terminal. This pin is compared with the reference voltage (generally 2.5V) at the same direction input terminal of the internal error amplifier to generate the control voltage and control the pulse width.3-pin iSense is the current sensing terminal. In the peripheral circuit, a small resistance sampling resistance is connected in series with the source of the power switch tube (such as VMOS tube) to convert the current of the pulse transformer into voltage, which is sent to pin 3 to control the pulse width. In addition, when the power supply voltage is abnormal, the current of the power switch increases. When the voltage on the sampling resistance exceeds 1V, UC3842 stops output, effectively protecting the power switch.4-pin RT / CT is timing terminal. The sawtooth oscillator is externally connected with the common terminal of timing capacitor C and timing resistor R.Pin 5 GND is grounded.6 pin out is the output end, this pin is Tuten column output, and the driving capacity is ± la. This totem pole structure is beneficial to the shutdown of the driven power tube, because when the triode VTL is cut off, vt2 is turned on, which provides a low impedance reverse extraction current circuit for the shutdown of the power tube and accelerates the shutdown of the power tube.Pin 7 VCC is the power supply. When the power supply voltage is lower than 16V, uc3824 does not work, and the power consumption is less than 1mA. The input voltage can be obtained by reducing the voltage from the high voltage through a large resistance. After the chip works, the input voltage can fluctuate between 10 30V, and stop working below 10V. During operation, the power consumption is about 15mA, which can be provided through the feedback resistance.8-pin VREF is the reference voltage output, which can output an accurate 5V reference voltage, and the current can reach 50mA.The voltage regulation rate of uv3842 can reach 0.01%, the working frequency is 500KHz, the starting current is less than 1mA, the input voltage is 10 30V, the reference voltage is 4.9 5.1V, the working temperature is 0 70 ℃, and the output current is 1a.UC3842 typical application circuit (I)The following figure is a typical application circuit diagram with over-current and over-voltage protection composed of UC3842Figure UC3842 application circuit diagramOvercurrent protection principle: when the load current exceeds the rated value or the output short circuit causes the current of switch V4 to increase, and the voltage on R7 is fed back to pin 3. When the voltage on R7 is greater than 1V, the conduction width is narrowed through the internal current amplifier, the output voltage is reduced, and the working voltage of UC3842 is also reduced. When it drops below the set voltage, the overcurrent protection circuit works to protect the power tube. After the short circuit disappears, the power supply will automatically return to normal operation.Overvoltage protection: when the output voltage is too high for some reason, the voltage stabilizing tube V6 is turned on, which triggers the thyristor V7 to turn on and short circuit the output end. It can be seen that the overvoltage protection appears in the form of overcurrent protection.UC3842 typical application circuit (II)UC3842 adopts a fixed working frequency pulse width controllable modulation mode, with a total of 8 pins. The functions of each pin are as follows: ①the pin is the output of the error amplifier, and an external resistance capacitance element is used to improve the gain and frequency characteristics of the error amplifier; ② The pin is the feedback voltage input terminal. The pin voltage is compared with the 2.5V reference voltage at the in-phase terminal of the error amplifier to generate the error voltage, so as to control the pulse width; ③ The pin is the current detection input. When the detection voltage exceeds 1V, reduce the pulse width to make the power supply work intermittently; ④ The pin is the timing terminal, and the working frequency of the internal oscillator is determined by the external resistance capacitance time constant, f = 1.8 / (RT) × CT); ⑤ The foot is the common ground end; ⑥ The foot is a push-pull output terminal, the interior is a totem column, the rise and fall time is only 50ns, and the driving capacity is ± 1A; ⑦ The pin is the DC power supply end, with undervoltage and overvoltage locking function, and the chip power consumption is 15MW; ⑧ The pin is a 5V reference voltage output terminal with a load capacity of 50mA.UC3842 typical application circuit (III)AC-DC circuitAC-DC circuit turns AC into DC, which is a prerequisite for the design of flyback switching power supply. Figure 2 shows the AC-DC circuit, in which the input AC voltage is 60 220 V and the resistance 1r2 is a positive temperature coefficient thermistor to prevent overcurrent. 1r1 is a varistor used to bypass surge voltage. In PCB wiring requirements, serpentine wiring is adopted between the varistor and the zero line. If the varistor is damaged, the varistor can be disconnected in time without burning the circuit board due to the short circuit of the varistor. Common mode chokeAnd differential mode inductors (1l1 and 1L2) respectively filter out common mode and differential mode interference, and the DC current from the full bridge rectifier bridge is used to supply power to the subsequent circuit.UC3842 typical application circuit (IV)The typical circuit of switching power supply made of UC3842 for the protection of 3842 circuit is shown in Figure 1. Overload and short circuit protection is generally realized by connecting a resistor (R4) in series with the source of the switch tube to send the current signal to the third pin of 3842.When the power supply is overloaded, the 3842 protection acts to reduce the duty cycle, the output voltage and the power supply voltage Vaux of the 3842. When it is too low to work, the whole circuit is closed, and then the next startup process is started by R1 and R2. This is called hiccup protection. In this protection state, the power supply only works for a few switching cycles, and then enters the start-up process for a long time (hundreds of MS to a few s). The average power is very low. Even if the output short circuit for a long time will not cause damage to the power supply.Due to leakage inductance and other reasons, some switching power supplies have large switching spikes in each switching cycle. Even when the duty cycle is very small, the auxiliary voltage Vaux cannot be reduced sufficiently. Therefore, a resistor (R3) is generally connected in series on the rectifier diode of the auxiliary power supply, which forms RC filtering with C1 to filter out the spikes at the moment of opening. By carefully adjusting the value of this resistance, satisfactory protection can generally be achieved. When using this circuit, attention must be paid to selecting a relatively low auxiliary voltage Vaux, which is generally 13 15V for 3842, so that the circuit can be easily protected.Figure 1 is the most widely used circuit, but its protection circuit still has several problems:1. During mass production, due to the difference of components, some power supplies cannot be well protected. At this time, the value of R3 needs to be adjusted individually, causing trouble to production;2. When the output voltage is low, such as 3.3V and 5V, due to the large output current, the output voltage drops little during overload, and it is difficult to adjust R3 to an ideal value;3. In forward application, although the auxiliary voltage Vaux also changes with the output, it has a greater relationship with the input voltage HV, and it is difficult to adjust R3 to an ideal value. At this time, if the auxiliary circuit is used to realize the protection shutdown, a better effect will be achieved. Implementation principle of auxiliary shutdown circuit: in case of overload or short circuit, the output voltage decreases and the optocoupler with voltage feedback is no longer on. When the auxiliary shutdown circuit detects that the optocoupler is no longer on, it acts after a delay to turn off the power supply.Figures 2, 3 and 4 are common circuits. Figure 2 turn off the power by pulling down the first pin. Fig. 3 adopts the method of disconnecting the oscillation circuit. Fig. 4 adopts the method of raising the second leg and then lowering the first leg. In these three circuits, R3 resistance can still be well protected even if it is not used. Pay attention to the function of C4 in the circuit. The power supply starts normally and the optocoupler is not connected. Therefore, C4 is used to delay the action of the protection circuit for a period of time. In case of overload or short circuit protection, it also plays the role of time-delay protection. When the starting current of bulbs and motors is large, the value of C4 should also be larger.UC3842 typical application circuit (V)The power factor correction circuit composed of UC3842 is shown in the figure below:The input voltage is rectified by the EMI filter composed of L1, L2, L3, etc. brc1, one is sent to the PFC inductor, and the other is sent to the PFC controller after R1 and R2 voltage division as the sampling of the input voltage, so as to adjust the duty cycle of the control signal, that is, change the on and off time of Q1 and stabilize the PFC output voltage. L4 is a PFC inductor, which stores energy when Q1 is on and releases energy when Q1 is off. D1 is the starting diode. D2 is PFC rectifier diode, C6 and C7 filter. One way of PFC voltage is sent to the rear stage circuit, and the other way is sent to the PFC controller after being divided by R3 and R4 as a sample of PFC output voltage to adjust the duty cycle of control signal and stabilize PFC output voltage.UC3842 typical application circuit (VI)The input overvoltage and undervoltage protection circuit based on UC3842 is shown in the figure below. The input overvoltage and undervoltage protection principle of AC input and DC input switching power supply is roughly the same. The sampling voltage of the protection circuit comes from the input filtered voltage. The sampling voltage is divided into two channels. One channel is divided by R1, R2, R3 and R4 and then input to the ⑧ pin of the comparator. If the sampling voltage is higher than the reference voltage of the ② pin, the output of the 1 pin of the comparator is off level to control the main controller to turn it off, and the power supply has no output. The other circuit is divided by R7, R8, R9 and R10 and then input to pin ⑥ of the comparator. If the sampling voltage is lower than the reference voltage of pin ⑤, pin ⑦ of the comparator outputs a high level to control the main controller to turn it off, and the power supply has no output.>>>>>>Daquan 3842 charger circuit diagram (detailed explanation of UC3842 / LM324 / ka3842 charger circuit)
List of Portland Pirates Seasons
List of Portland Pirates Seasons
List of Portland Pirates seasonsThis is a list of seasons completed by the Portland Pirates professional ice hockey club of the American Hockey League. This list documents the records and playoff results for all seasons the Pirates have completed in the AHL since their inception in 1993. Records as of May 1, 2016.— — — — — —wich movie is better surfs up or pirates of the caribbean at worlds end?I would go for the pirates... arrrg!— — — — — —Did you like the new pirates film?I totally agree with Lynn. The 1st movie was the best.— — — — — —1958 Pittsburgh Pirates seasonThe 1958 Pittsburgh Pirates season was the 77th season of the Pittsburgh Pirates franchise; the 72nd in the National League. The Pirates finished second in the league standings with a record of 84-70, a 22-game improvement over 1957. They ended the year in the first division for the first time since 1948 and recorded their highest league standing since the 1944 edition also finished in second place. Manager Danny Murtaugh, in his first full season at the Pirates' helm, was voted Major League Manager of the Year by The Sporting News— — — — — —1960 East Carolina Pirates football teamThe 1960 East Carolina Pirates football team represented East Carolina College-now known as East Carolina University-during the 1960 college football season— — — — — —Elmshorn Fighting PiratesThe Elmshorn Fighting Pirates are an American football team from Elmshorn, Germany. The club's greatest achievement is winning the championship in the GFL2 North and entering the German Football League, the top tier American Football league in Germany, in the 2020 season.— — — — — —do pirates still exsist today?Yeah. They like to attack cruise ships off the coast of Florida. No, really, they do— — — — — —Bikini PiratesBikini Pirates is a 2006 American made for cable erotic film directed by Fred Olen Ray (under the pseudonym name Nicholas Juan Medina). It is also known by the alternative name Harlots of the Caribbean.— — — — — —Pirates of the Caribbean: On Stranger TidesPirates of the Caribbean: On Stranger Tides is a 2011 American fantasy swashbuckler film, the fourth installment in the Pirates of the Caribbean film series and a standalone sequel to At World's End (2007). It is the first film in the series not to be directed by Gore Verbinski, replaced by Rob Marshall. Jerry Bruckheimer again served as producer. In the film, which draws its plot loosely from the 1987 novel On Stranger Tides by Tim Powers, Captain Jack Sparrow (Johnny Depp) is joined by Angelica (Penlope Cruz) in his search for the Fountain of Youth, confronting the infamous pirate Blackbeard (Ian McShane). The film was produced by Walt Disney Pictures and released in the United States on May 20, 2011. It was the first film in the series to be released in the Disney Digital 3-D and IMAX 3D formats. Writers Ted Elliott and Terry Rossio first learned of Powers's novel On Stranger Tides during the back-to-back production of Dead Man's Chest (2006) and At World's End, and considered it a good starting point for a new film in the series. Pre-production started after the end of the 2007-2008 Writers Guild of America strike, with Depp collaborating with the writers on the story design. Principal photography lasted for 106 days between June and November 2010, with locations in Hawaii, the United Kingdom, Puerto Rico and California. Filming employed 3D cameras similar to those used in the production of the 2009 film Avatar, and ten companies were involved with the film's visual effects. Following inflated production costs which ballooned the net budget to $379 million, the film currently ranks as the most expensive film ever made. On Stranger Tides broke many box office records and was the third highest-grossing film of 2011. It is the 38th highest-grossing film of all time worldwide when not adjusting for inflation. Reviews were mixed, with criticism for its plot, screenplay, direction, excessiveness, and lack of originality, but general praise for the acting, action sequences, musical score, visuals, and the shorter runtime. A fifth film, titled Dead Men Tell No Tales, was released in May 2017, and a sixth film is in development.— — — — — —Pirates and Seattle community eventsThe Seafair festival is a monthlong festival that starts with the Seafair Pirates Landing at Alki Beach in Seattle, usually during the first Saturday of July. Throughout the summer the Seafair Pirates participate in approximately 40 local festivals as well as several hundred private appearances. The grand finale is the Seattle Seafair Torchlight Parade that occurs in August. "Seafair has become a home town jewel that reaches nearly 2 million Puget Sound residents each summer." The Seafair Torchlight Parade is a regular highlight of the Seafair summer festival. In 1999, the parade featured 4,000 participants on more than 100 floats and in bands and dance and entertainment acts. This parade is ranked the largest nighttime parade in the Northwest, with drill teams, community floats, regional and international bands, equestrian units, giant helium balloons, clowns and pirates.
Wood Doors for Today's Homes
Wood Doors for Today's Homes
Looking back at the past, you can be sure that the richest palaces always had an excellent wooden door at the entrance. And it means that wood was considered the best material for making doors for many centuries. Always at all times the door at the entrance to the house was an obvious indicator of the social status of its owner, his taste and level of income.Beautiful appearance - this is not all that the wooden door offers us. Made of solid wood, wooden doors have excellent soundproofing characteristics. Although the door from the solid wood is heavier than others, it has in fact no equal in strength and reliability.At present, wooden doors are a classic product, high-quality and exclusive. Buying in your house a wooden door made of beech, oak, mahogany - you provide yourself with a peace of mind for many years. In addition to different types of materials, many manufacturers offer various options for wood processing and decorating. If desired, you can cover the door with special dye that preserve the natural appearance of the door, but slightly correct the natural tone of the wood.In addition, wooden doors are environmentally friendly and able to bring natural harmony and charm to your home or office.How to choose high-quality products?A few tips on how to protect yourself from buying a low-quality product:1.DocumentationThe most important element that confirms the quality of products. Good manufacturers always provide the relevant papers and certificates containing production data, as well as indicating the legal origin of the product.2.External characteristicsThe door, all the accessories and the factory fittings must hold tight, do not hang around, and inspire confidence in its appearance. Avoid buying a model with subsequent pre-assembly. Incompetent specialists can easily damage your front or interior door after buying it.3.Additional elements and accessoriesHandles, locks, core, turn signals, hinges, door mechanisms. Pay attention to the quality and operation of door accessories. Everything should work smoothly, easily, with the first click. Quality accessories do not bend, do not creak, do not break from pressing with hands.The last thing that needs your attention is an installation. This process has not less importance than a guarantee of high quality of the product. The correctness and accuracy of the installation directly affect to the level of security. Depending on how correctly the door was installed, the more reliable it will perform its function - providing comfort and security of living in people's houses.
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