POWER SUPPLY DESIGN BASICS
... is needed. Figure 12 shows the simplest solution and is satisfactory for loads of up to about 50mA. This circuit is often used as a reference voltage to apply to the base of a transistor of to the input of an op amp to obtain higher output current. The simplest example of a series regulator is shown ...
... is needed. Figure 12 shows the simplest solution and is satisfactory for loads of up to about 50mA. This circuit is often used as a reference voltage to apply to the base of a transistor of to the input of an op amp to obtain higher output current. The simplest example of a series regulator is shown ...
A UNIFIED CONTROL STRATEGY FOR THREE
... operations of three-phase inverter in distributed generation, with no need for switching between two corresponding controllers or critical islanding detection. The proposed control strategy composes of an inner inductor current loop, and a novel voltage loop in the synchronous reference frame. Distr ...
... operations of three-phase inverter in distributed generation, with no need for switching between two corresponding controllers or critical islanding detection. The proposed control strategy composes of an inner inductor current loop, and a novel voltage loop in the synchronous reference frame. Distr ...
three-phase bridge rectifiers (b6)
... Among all the line-frequency three-phase rectifiers (M3, M6, B6, ...) the most used is the six-pulses (full) bridge rectifier (B6). As shown in Fig.13.1, its topology consists of three legs with rectifying diodes (uncontrolled rectifiers), with thyristors (phase-controlled rectifiers) or with a diod ...
... Among all the line-frequency three-phase rectifiers (M3, M6, B6, ...) the most used is the six-pulses (full) bridge rectifier (B6). As shown in Fig.13.1, its topology consists of three legs with rectifying diodes (uncontrolled rectifiers), with thyristors (phase-controlled rectifiers) or with a diod ...
4 – The Power BJT 3
... Index “r” refers to the rising time (from 10 to 90% of maximum value), for example tri is the current rise time which depends upon the base current. The falling time is indexed by “f”; the parameter tfi is the current falling time, i.e. when the transistor is blocking such time corresponds to crossi ...
... Index “r” refers to the rising time (from 10 to 90% of maximum value), for example tri is the current rise time which depends upon the base current. The falling time is indexed by “f”; the parameter tfi is the current falling time, i.e. when the transistor is blocking such time corresponds to crossi ...
An Overview of the New Test Stand for H
... chamber shown in Fig. 3, provides a pumping capacity of 1,200 l/s for H2. The other turbo-molecular pump, which is at the end of the Low Energy Beam Transport line (LEBT), is an Oerlikon-Leybold TMP361 with a pumping capacity of 340 l/s for H2. The source vacuum chamber is made of stainless steel wi ...
... chamber shown in Fig. 3, provides a pumping capacity of 1,200 l/s for H2. The other turbo-molecular pump, which is at the end of the Low Energy Beam Transport line (LEBT), is an Oerlikon-Leybold TMP361 with a pumping capacity of 340 l/s for H2. The source vacuum chamber is made of stainless steel wi ...
Achieve 20-30% power savings in low-power
... The TPS62730 is a high- frequency synchronous step-down DC/DC converter optimized for ultra-low-power wireless applications such as TI’s low-power wireless sub 1-GHz and 2.4-GHZ RF transceivers. The device reduces the current consumption drawn from the battery during TX and RX mode by a high-efficie ...
... The TPS62730 is a high- frequency synchronous step-down DC/DC converter optimized for ultra-low-power wireless applications such as TI’s low-power wireless sub 1-GHz and 2.4-GHZ RF transceivers. The device reduces the current consumption drawn from the battery during TX and RX mode by a high-efficie ...
Semiconductor devices Electrons and Holes Intrinsic conduction
... must be sufficiently large so that it only lose a small fraction of its charge through the load between each cycle. ...
... must be sufficiently large so that it only lose a small fraction of its charge through the load between each cycle. ...
Electrochemistry Oxidation-Reduction: Review oxidation reactions
... Because the external source is controlling the flow of electrons, the polarities of the electrodes are the opposite of those in voltaic cells – the anode of an electrolytic cell has a positive charge and the cathode has a negative charge. To determine which reactions will take place, the standard el ...
... Because the external source is controlling the flow of electrons, the polarities of the electrodes are the opposite of those in voltaic cells – the anode of an electrolytic cell has a positive charge and the cathode has a negative charge. To determine which reactions will take place, the standard el ...
ELECTRICAL CIRCUITS
... When the switch is closed, the lamp lights up. This is because there is a continuous path of metal for the electric current to flow around. ...
... When the switch is closed, the lamp lights up. This is because there is a continuous path of metal for the electric current to flow around. ...
Series MH60 - hitek power supplies
... FEATURES 60W output power High reliability 24V DC powered Range of outputs available Positive or negative polarity Short circuit & flashover protection Remotely controllable V & I control V & I monitor LED status indication Low ripple EU RoHS Compliant to 2002/95/EC marked for EU LV Directive 73/23/ ...
... FEATURES 60W output power High reliability 24V DC powered Range of outputs available Positive or negative polarity Short circuit & flashover protection Remotely controllable V & I control V & I monitor LED status indication Low ripple EU RoHS Compliant to 2002/95/EC marked for EU LV Directive 73/23/ ...
current sensor - Electronics DIY
... a standard step-down transformer (09V, 500mA) as the current sensor. Its secondary winding is left open, while the primary winding ends are used to detect the current. The primary ends of the transformer are connected to a full-wave bridge rectifier comprising diodes D1 through D4. The rectified out ...
... a standard step-down transformer (09V, 500mA) as the current sensor. Its secondary winding is left open, while the primary winding ends are used to detect the current. The primary ends of the transformer are connected to a full-wave bridge rectifier comprising diodes D1 through D4. The rectified out ...
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.