ZXSC410/ZXSC420/ZXSC440 Description Pin Assignments
... The switching circuit consists of two comparators, Comp1 and Comp2, a gate U1, a monostable and the drive output. Normally the DRIVE output is “HIGH”; the external switching transistor is turned on. Current ramps up in the inductor, the switching transistor and external current sensing resistor. Thi ...
... The switching circuit consists of two comparators, Comp1 and Comp2, a gate U1, a monostable and the drive output. Normally the DRIVE output is “HIGH”; the external switching transistor is turned on. Current ramps up in the inductor, the switching transistor and external current sensing resistor. Thi ...
The Basic Principles of Electrical Overstress (EOS)
... circuits that cut off the driver's output if the output current exceeds a certain level. Such protection circuits normally have a very broad margin to account for ripples and incorrect triggering due to circuit noise; the cut-off value is generally more than two times the operating current. Again, s ...
... circuits that cut off the driver's output if the output current exceeds a certain level. Such protection circuits normally have a very broad margin to account for ripples and incorrect triggering due to circuit noise; the cut-off value is generally more than two times the operating current. Again, s ...
The Dielectric Voltage Withstand Test
... The use of a trip current setting to determine dielectric breakdown is based on the assumption that current above the trip setting is indicative of dielectric breakdown. While this is true in many cases, there are instances in which a current above the trip-out threshold is not indicative of a break ...
... The use of a trip current setting to determine dielectric breakdown is based on the assumption that current above the trip setting is indicative of dielectric breakdown. While this is true in many cases, there are instances in which a current above the trip-out threshold is not indicative of a break ...
J.C. Sturm, B. Hekmatshoar, K. Cherenack and S. Wagner, "Amorphous Silicon TFT's with 100-year Lifetimes in a Clear Plastic Compatible Process for AMOLEDs," SID 09 Digest, pp. 979-982, JUNE (2009)t, pp. 597-599, JUNE (2009)
... (“standard a-Si”) process was found to be defect formation in the a-Si. Increasing the process temperature beyond 250-300 oC did not increase the quality of a-Si. In the “a-Si limit” region of Fig. 5, the breaking of Si-Si bonds is though to be the dominant mechanism of the threshold voltage shift. ...
... (“standard a-Si”) process was found to be defect formation in the a-Si. Increasing the process temperature beyond 250-300 oC did not increase the quality of a-Si. In the “a-Si limit” region of Fig. 5, the breaking of Si-Si bonds is though to be the dominant mechanism of the threshold voltage shift. ...
BD9300F
... The soft start function will be required to prevent an excessive increase in the coil current and overshoot of the output voltage, while in startup operation. Fig. 20 shows the relationship between the capacitor and the soft start time. Referring to this Figure, set the capacitor. It is recommended ...
... The soft start function will be required to prevent an excessive increase in the coil current and overshoot of the output voltage, while in startup operation. Fig. 20 shows the relationship between the capacitor and the soft start time. Referring to this Figure, set the capacitor. It is recommended ...
Loop Calibration and Maintenance with a Fluke Loop Calibrator
... loop-powered isolator, the twowire loop transmitter supplying signal current to the isolator for the loop may be removed and the calibrator connected in simulate mode to control loop current (Figure 2). Connecting the Fluke loop calibrator In this example, we will use the Fluke 787 Process Meter. Al ...
... loop-powered isolator, the twowire loop transmitter supplying signal current to the isolator for the loop may be removed and the calibrator connected in simulate mode to control loop current (Figure 2). Connecting the Fluke loop calibrator In this example, we will use the Fluke 787 Process Meter. Al ...
An Interleaved Totem-Pole Power Factor Correction
... During this period, body-diodes of the negativephase group act as the catch diode. In this phase, return current is delivered by D2 . The converter operation during this stage is illustrated by Fig. 5(a) When Vi is in its negative phase, the opposite condition occurs. Through out this time, negative ...
... During this period, body-diodes of the negativephase group act as the catch diode. In this phase, return current is delivered by D2 . The converter operation during this stage is illustrated by Fig. 5(a) When Vi is in its negative phase, the opposite condition occurs. Through out this time, negative ...
đây
... SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 16, No.K3- 2013 Conventional UPSs, which are shown in Figure ...
... SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 16, No.K3- 2013 Conventional UPSs, which are shown in Figure ...
Improvement of the Electric Power Quality Using Series Active and
... divided by the average value of the sum of the square of the instantaneous values of the current fundamental component. The fundamental component is obtained by means of a block with the scheme shown in Fig. 10. Each component of the source and where is the current vector is multiplied by fundamenta ...
... divided by the average value of the sum of the square of the instantaneous values of the current fundamental component. The fundamental component is obtained by means of a block with the scheme shown in Fig. 10. Each component of the source and where is the current vector is multiplied by fundamenta ...
BH12PB1WHFV
... connection error or if pins are shorted together. 4. Thermal shutdown circuit (TSD) The IC incorporates a built-in thermal shutdown circuit (TSD circuit). The thermal shutdown circuit is designed only to shut the IC off to prevent runaway thermal operation. It is not designed to protect the IC or gu ...
... connection error or if pins are shorted together. 4. Thermal shutdown circuit (TSD) The IC incorporates a built-in thermal shutdown circuit (TSD circuit). The thermal shutdown circuit is designed only to shut the IC off to prevent runaway thermal operation. It is not designed to protect the IC or gu ...
PAM2845
... running the sensing traces near SW Pin. 5) Place the VIN pin bypass capacitor as close to the device as possible. The ground connection of the VIN bypass capacitor should be connected directly to GND pins with a wide trace. 6) Minimize the size of the SW node while keeping it wide and short. Keep th ...
... running the sensing traces near SW Pin. 5) Place the VIN pin bypass capacitor as close to the device as possible. The ground connection of the VIN bypass capacitor should be connected directly to GND pins with a wide trace. 6) Minimize the size of the SW node while keeping it wide and short. Keep th ...
AL5801 Description Pin Assignments
... The AL5801 is designed for driving high brightness LEDs with typical LED current up to 350mA. It provides a more cost effective way for driving low current LEDs when compared against more complex switching regulator solutions. Furthermore, it reduces the PCB board area of the solution because there ...
... The AL5801 is designed for driving high brightness LEDs with typical LED current up to 350mA. It provides a more cost effective way for driving low current LEDs when compared against more complex switching regulator solutions. Furthermore, it reduces the PCB board area of the solution because there ...
Analogue Panel Instruments List 7
... The instrument is equipped with two built-in relays with changeover contacts, which enable supervising of limit values. The switching points of the relays can be adjusted in the range 0…100% of maximum value by potentiometers on the backside. Two additional potentiometers enable a delay function for ...
... The instrument is equipped with two built-in relays with changeover contacts, which enable supervising of limit values. The switching points of the relays can be adjusted in the range 0…100% of maximum value by potentiometers on the backside. Two additional potentiometers enable a delay function for ...
the tetrode boards - Bruce`s home page
... • Loss or major change in anode, screen or control grid voltage • RF and DC arcs, flashovers and other ‘glitches’ • Blower failure, resulting in overheating of the tube(s). All of these faults will result in too much screen current, either positive or negative. Continuous electronic monitoring of th ...
... • Loss or major change in anode, screen or control grid voltage • RF and DC arcs, flashovers and other ‘glitches’ • Blower failure, resulting in overheating of the tube(s). All of these faults will result in too much screen current, either positive or negative. Continuous electronic monitoring of th ...
1 Scope (regarding no. 1)
... (36) Cables and conductors must be laid in such a way that they can be exchanged and are protected, e.g. on cable trays, anchor rails, in cable trenches, channels, protective tubes, wells and on cable ladders. The cable carriers must have a space reserve of at least 20% in all areas. (37) Cables and ...
... (36) Cables and conductors must be laid in such a way that they can be exchanged and are protected, e.g. on cable trays, anchor rails, in cable trenches, channels, protective tubes, wells and on cable ladders. The cable carriers must have a space reserve of at least 20% in all areas. (37) Cables and ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.