Weld Defects-Their Causes and How to Correct Them
... cooled and again proper wetting is prevented. The arc length should be kept short, not only to avoid undercutting but to increase penetration and weld soundness. Excessive welding currents can also cause undercutting. The arc force, arc heat and penetration are so great that the base plate under the ...
... cooled and again proper wetting is prevented. The arc length should be kept short, not only to avoid undercutting but to increase penetration and weld soundness. Excessive welding currents can also cause undercutting. The arc force, arc heat and penetration are so great that the base plate under the ...
92st_q
... (c) The household voltage supply in Hong Kong is being changed form 200 V a.c. to 220 V a.c. Give one reason to support such a change. (2 marks) ...
... (c) The household voltage supply in Hong Kong is being changed form 200 V a.c. to 220 V a.c. Give one reason to support such a change. (2 marks) ...
BDTIC C C M - P F C
... operating range is between 11V and 26V. The turn-on threshold is at 11.8V and under voltage occurs at 11V. There is no internal clamp for a limitation of the power ...
... operating range is between 11V and 26V. The turn-on threshold is at 11.8V and under voltage occurs at 11V. There is no internal clamp for a limitation of the power ...
Design Guidelines for Flyback Converter Using HFC0400
... Figure 2 shows the switching frequency vs. FB and peak current vs. FB. At heavy load condition (FB>2V), the switching frequency is fixed with frequency jittering for EMI reduction. The FB voltage regulates the primary side peak current signal (sensed by sensing resistor) connected to CS pin with an ...
... Figure 2 shows the switching frequency vs. FB and peak current vs. FB. At heavy load condition (FB>2V), the switching frequency is fixed with frequency jittering for EMI reduction. The FB voltage regulates the primary side peak current signal (sensed by sensing resistor) connected to CS pin with an ...
TL3016 数据资料 dataSheet 下载
... Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C Storage temperatur ...
... Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C Storage temperatur ...
HIP4080A Datasheet
... Bridge N-Channel FET driver IC, available in 20 lead plastic SOIC and DIP packages. The HIP4080A includes an input comparator, used to facilitate the “hysteresis” and PWM modes of operation. Its HEN (high enable) lead can force current to freewheel in the bottom two external power MOSFETs, maintaini ...
... Bridge N-Channel FET driver IC, available in 20 lead plastic SOIC and DIP packages. The HIP4080A includes an input comparator, used to facilitate the “hysteresis” and PWM modes of operation. Its HEN (high enable) lead can force current to freewheel in the bottom two external power MOSFETs, maintaini ...
Product Data and Specifications-Product Data for
... applying 24 V power to the appropriate PFR direction selection lead(s) while power is present. Applying 24 V will cause the valve to close the A port when power is lost. Not applying power will cause the valve to open the A port when power is lost. This can be useful in 2-pipe systems where both hot ...
... applying 24 V power to the appropriate PFR direction selection lead(s) while power is present. Applying 24 V will cause the valve to close the A port when power is lost. Not applying power will cause the valve to open the A port when power is lost. This can be useful in 2-pipe systems where both hot ...
Precision Full-Wave Rectifier, Dual-Supply
... that help to meet alternate design goals are also discussed. ...
... that help to meet alternate design goals are also discussed. ...
MAX8862, MAX8862L, MAX8862R, MAX8862T 双路高、低功率线性稳压器，封装在单一芯片，节省空间
... applications. The regulators have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators use P-channel MOSFET pass transistors and maintain low quiescent current independent of load current. In dropout, the MOSFET does not suff ...
... applications. The regulators have independent supply inputs and provide 250mA and 100mA, respectively, with a full-load dropout voltage of 160mV. Both regulators use P-channel MOSFET pass transistors and maintain low quiescent current independent of load current. In dropout, the MOSFET does not suff ...
CD23490495
... average value of the load power. The term P dc accounts for the losses in the VSI without any dc loads in its dc link. To generate Pdc, a suitable closed-loop dc-link voltage controller should be used, which will regulate the dc voltage to the reference value. The transient performance of the compen ...
... average value of the load power. The term P dc accounts for the losses in the VSI without any dc loads in its dc link. To generate Pdc, a suitable closed-loop dc-link voltage controller should be used, which will regulate the dc voltage to the reference value. The transient performance of the compen ...
Current monitoring relay SRN mecotron® 2 Functions
... Enabled: If the current decreases to zero within the trip delay period, then zero current is viewed as an acceptable current level. The unit's output remains in its normal operating state. This allows the monitored load to cycle ON and OFF without nuisance tripping the ECSW. Zero current is defined ...
... Enabled: If the current decreases to zero within the trip delay period, then zero current is viewed as an acceptable current level. The unit's output remains in its normal operating state. This allows the monitored load to cycle ON and OFF without nuisance tripping the ECSW. Zero current is defined ...
Three-Level Inverter-Based Shunt Active Power Filter , Member, IEEE
... Abstract—This paper presents a direct current-space-vector control of an active power filter (APF) based on a three-level neutral-point-clamped (NPC) voltage-source inverter. The proposed method indirectly generates the compensation current reference by using an equivalent conductance of the fundame ...
... Abstract—This paper presents a direct current-space-vector control of an active power filter (APF) based on a three-level neutral-point-clamped (NPC) voltage-source inverter. The proposed method indirectly generates the compensation current reference by using an equivalent conductance of the fundame ...
BDTIC
... ICE3PCS01/02/03G are the 3rd generation of Continuous Conduction Mode (CCM) PFC controllers, which employ BiCMOS technology and digital control voltage loop. The IC control scheme does not need the direct sine-wave sensing reference signal from the AC mains compared to the conventional PFC solution. ...
... ICE3PCS01/02/03G are the 3rd generation of Continuous Conduction Mode (CCM) PFC controllers, which employ BiCMOS technology and digital control voltage loop. The IC control scheme does not need the direct sine-wave sensing reference signal from the AC mains compared to the conventional PFC solution. ...
Low Voltage and Medium Voltage Variable Frequency Drives
... compressors applications. The CSI – PWM drive, see Figure 6, consists of rectifier circuit utilizing SCRs in to convert 60 Hz input supply to variable DC supply, large reactor in the DC link and PWM inverter using GTOs coupled to an output capacitor for high order harmonic reduction. PWM inverter us ...
... compressors applications. The CSI – PWM drive, see Figure 6, consists of rectifier circuit utilizing SCRs in to convert 60 Hz input supply to variable DC supply, large reactor in the DC link and PWM inverter using GTOs coupled to an output capacitor for high order harmonic reduction. PWM inverter us ...
a bidirectional switch based high-efficiency isolated
... transformer. In order to reduce the switch count the method can also be implement with half bridge and push-pull converter.The bidirectional switch which is connected in secondary side formed by connecting drains of two mosfet ref [1].The primary side circuit consist of a full bridge inverter rather ...
... transformer. In order to reduce the switch count the method can also be implement with half bridge and push-pull converter.The bidirectional switch which is connected in secondary side formed by connecting drains of two mosfet ref [1].The primary side circuit consist of a full bridge inverter rather ...
Model 3206G - Radian Research
... the manufacturer’s supplied module. The Model 3206G can even be used as a simple meter warm-up station. The Model 3206G is a stand-alone unit that requires no additional PC or hardware for general operation. Watthour Engineering’s advanced Smart Socket™ technology allows you to insert a meter into t ...
... the manufacturer’s supplied module. The Model 3206G can even be used as a simple meter warm-up station. The Model 3206G is a stand-alone unit that requires no additional PC or hardware for general operation. Watthour Engineering’s advanced Smart Socket™ technology allows you to insert a meter into t ...
Notes
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
BDTIC CCM-PFC ICE1PCS02 ICE1PCS02G
... There are various protection features incorporated to ensure safe system operation conditions. The internal reference is trimmed (5V+2%) to ensure precise protection and output control level. The ICE1PCS02/G is a design variant of ICE1PCS01 to incorporate the new input brown-out protection function ...
... There are various protection features incorporated to ensure safe system operation conditions. The internal reference is trimmed (5V+2%) to ensure precise protection and output control level. The ICE1PCS02/G is a design variant of ICE1PCS01 to incorporate the new input brown-out protection function ...
Three-phase Electrical Power
... demonstrations require only the transformers and some miniature light bulbs. I have also developed a way to demonstrate how six-phase AC can be derived from three-phase AC. Compared to single-phase power, three-phase power has many advantages. Three-phase transmission lines require fewer wires than ...
... demonstrations require only the transformers and some miniature light bulbs. I have also developed a way to demonstrate how six-phase AC can be derived from three-phase AC. Compared to single-phase power, three-phase power has many advantages. Three-phase transmission lines require fewer wires than ...
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.