 Wysłany: Nie 20:16, 20 Mar 2011 Temat postu: tory burch reva fkx fdc tvm abq |
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| The principle of exchange of clean power supply and circuit analysis
Signal voltage to the op amp IC3-12 relative to side with the enlarged foot. PWM driver amplifier by the operational amplifier I (23 of 8,9,tory burch flats,10, feet, o3, etc; the same input terminal 1O feet feet from IC2-7 synchronized sawtooth voltage; inverting input errors sample 9 feet amplified DC signal; I (23-8 pin voltage output pulse width controlled by the enlarged trigger triac Q3. transformer B2, bridge rectifier D9-12, filter capacitor C5 ~ 6, three-terminal regulator ICA ( 7812) constitute a DC power supply, provides 12V power to the circuit. 76ChineseJournalofMedicalResearchandApphcation, Mav, 20O4,tory burch reva, Vo1.2, No, 5 Figure 2jJW series precision purifying AC power supply schematic power supply voltage AC purification process: when the output voltage increases, the bridge circuit by the R5-6, W1,tory burch outlet, c4, operational amplifier IC3, transistor Q2, following a sampling error of the output rectifier D1316 voltage increases, the op amp IC3 electrical J1, over-voltage indicator D8, buzzer H and other accessories. When the power output to the terminal with the voltage rise of 12 feet, IC3-14 pin output to high-voltage pulse width modulator IC3 with the limit (about 246V, W1 can be adjusted), the op amp's inverting terminal 9 feet voltage increases, IC3-phase synchronous input terminal 1O feet to the side with the IC3 saw 5 feet from the R5 ~ 6, W1, c4 voltage divider circuit composed of tooth-wave voltage input range of the same, then the output of op amp 8-pin output IC3 voltage higher than 6V, IC3-7 output high, transistor Q2 turns on, relay the pulse width becomes narrower, amplified by transistor Q3 SCR SCR trigger Push-pull device J1,tory burch shoes, normally closed contact is broken, cut off TRIAC SCR, to lose smaller conduction angle, then adjust the circuit can be increasingly capacitive substation reactor, since the voltage drop than the input voltage of about 40V, also issued audible and visual alarm, D20 coupling transformer T1 secondary voltage and mains voltage inverter, AC voltage to IC3-6 output under voltage clamp around the O.6V Q2's turn to ensure that only drop. When the AC output voltage drops, voltage regulator and the process On the contrary. off a few seconds to reboot in order to restore to normal. The power supply has over-voltage protection circuit in order to increase reliability. overvoltage Received :2004-03-04 ultrasonic atomizing inhalation anesthesia for 2525 cases of bronchoscopy Rongrong Chen Ying Luo reports good money to the North of fiberoptic bronchoscopy in patients with (treatment) must be carried out before the local (mucosal surface of the throat and trachea) anesthesia, this is the diagnosis and treatment knowledge. clinical practice has proved to find a good method of anesthesia, be sure to check (treatment) an important prerequisite for successful and accurate. at home and abroad for bronchoscopy (treatment) is a commonly used method of anesthesia: local tracheal instillation of law, throat spray anesthesia alone, cricothyroid membrane puncture nasal endotracheal anesthesia catheter insertion. one of the methods described above can achieve the purpose of the tracheal anesthesia, but then need to re-use or tetracaine 1% ephedrine nasal packing cotton balls to only after nasal anesthesia into the fiber support mirror. Although the above method in clinical practice more mature, but there are a lot of flaws. For example: two segments anesthesia more complicated and time-consuming; Another example: cricothyroid membrane puncture from the anesthetized to the pain of the patient added a new, but to the patient causing fear because of some patient units: Guizhou Provincial People's Hospital,timberland shoes, Department of Respiratory Medicine (550002) Author: Chen Ying, 34, Nurse. puncture bleeding is also a direct impact on clinical results; Another example: The Infusion of anesthetic into the trachea, often in the trachea, bronchus uneven distribution of mirror inserted easily lead to choking occurs during the impact test (treatment) for. To avoid these shortcomings, we have adopted in recent years, ultrasonic spray inhalation as bronchoscopy (treatment ) before the primary means of anesthesia, the effect is quite satisfactory, now 2525 cases of clinical (sub) reports summarized below for reference. 1 clinical purposes ultrasonic atomizing inhalation cases were 2525 cases (time). Of which: Male 2439 cases (times), female 86 cases (times), aged 17 to 82 years old. here with conventional anesthesia for the control group, 100 cases were performed (time). which: M 85 (times), female 15 cases (times), the age of 38 to 80 years old. anesthetic subjects were randomized. 2 ultrasonic atomizing inhalation method is brief and comparison with other methods we use are made yc-y800 ultrasonic nebulizer, with 2% Lido as a surface anesthetic tetracaine. operations are summarized as follows: first dip into the fog of the anesthesia |
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