capacitor voltage transformer
... times rated primary voltage, rated frequency and rated burden corresponding to the highest rated output at any power factor between 0.8 and unity, over an ambient temperature of 50ºC shall not exceed the limits as specified in IEC standards. The temperature rise at 1.5 times rated primary voltage wh ...
... times rated primary voltage, rated frequency and rated burden corresponding to the highest rated output at any power factor between 0.8 and unity, over an ambient temperature of 50ºC shall not exceed the limits as specified in IEC standards. The temperature rise at 1.5 times rated primary voltage wh ...
... for this control. The dc output voltage of the two stage converter is to be varied for speed control of the BLDC motor. This can be achieved by controlling the duty ratio (ON time) of switch Q1 in the CSC converter. This is achieved in an open loop manner by PIC microcontroller. The diagram for the ...
Instead of thyristors, full wave rectifier can be
... gate pulse, the kinetic energy is partly dissipated in armature resistance and partly stored in armature inductance. When chopper is turned off, the energy stored in inductance is transferred to braking resistance and dissipated as heat. Reverse Generating Mode: Reverse generating mode is feasible o ...
... gate pulse, the kinetic energy is partly dissipated in armature resistance and partly stored in armature inductance. When chopper is turned off, the energy stored in inductance is transferred to braking resistance and dissipated as heat. Reverse Generating Mode: Reverse generating mode is feasible o ...
Word - ITU
... shall not unduly affect the functional signals. Coupling element (K.44): A coupling element is a low impedance component used to connect the surge generator to the port being tested or to couple an untested port to ground. Critical lightning current (Ic) (K.56): minimum peak value of lightning curre ...
... shall not unduly affect the functional signals. Coupling element (K.44): A coupling element is a low impedance component used to connect the surge generator to the port being tested or to couple an untested port to ground. Critical lightning current (Ic) (K.56): minimum peak value of lightning curre ...
Design Approach to Light-Load Effective Power Supply Utilizing the
... and produces the DRV pulses if the HV pin voltage is above the VHV(stop) (brown-out protection stop level). There is a 65 ms (typ.) timer before the brown-out protection is activated allowing the converter to ride through a short line drop-out. Timer Based Overcurrent Protection: The devices NCP1244 ...
... and produces the DRV pulses if the HV pin voltage is above the VHV(stop) (brown-out protection stop level). There is a 65 ms (typ.) timer before the brown-out protection is activated allowing the converter to ride through a short line drop-out. Timer Based Overcurrent Protection: The devices NCP1244 ...
45MHz to 650MHz, Integrated IF VCOs with Differential Output General Description Features
... Note 2: Supply current is measured while the part is oscillating and inductor Q ≥ QMIN. For MAX2605/MAX2606/MAX2607, QMIN = 35; for MAX2608/MAX2609, QMIN = 40. Note 3: The DC output current is the total available output signal current. Note 4: Application range of the part is achieved using external ...
... Note 2: Supply current is measured while the part is oscillating and inductor Q ≥ QMIN. For MAX2605/MAX2606/MAX2607, QMIN = 35; for MAX2608/MAX2609, QMIN = 40. Note 3: The DC output current is the total available output signal current. Note 4: Application range of the part is achieved using external ...
MAX8633–MAX8636 Dual 300mA Pin-Programmable LDO Linear Regulators General Description
... and power-supply rejection. To ensure proper operation over the specified temperature range, dielectrics such as X7R or X5R are recommended. If Z5U or Y5V dielectrics are used, it may be necessary to increase the value of the output capacitors to ensure stability at temperatures below -10°C. Tantalu ...
... and power-supply rejection. To ensure proper operation over the specified temperature range, dielectrics such as X7R or X5R are recommended. If Z5U or Y5V dielectrics are used, it may be necessary to increase the value of the output capacitors to ensure stability at temperatures below -10°C. Tantalu ...
MAX8545/MAX8546/MAX8548 Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit General Description
... The MAX8545/MAX8546/MAX8548 are voltage-mode pulse-width-modulated (PWM), step-down DC-DC controllers ideal for a variety of cost-sensitive applications. They drive low-cost n-channel MOSFETs for both the high-side switch and synchronous rectifier, and require no external current-sense resistor. The ...
... The MAX8545/MAX8546/MAX8548 are voltage-mode pulse-width-modulated (PWM), step-down DC-DC controllers ideal for a variety of cost-sensitive applications. They drive low-cost n-channel MOSFETs for both the high-side switch and synchronous rectifier, and require no external current-sense resistor. The ...
Zero-power off-line high voltage converter
... power MOSFET with PWM current-mode control. The power MOSFET with 800 V breakdown voltage allows extended input voltage range to be applied, as well as to reduce the size of the DRAIN snubber circuit. This IC is capable of meeting the most stringent energy-saving standards as it has very low consump ...
... power MOSFET with PWM current-mode control. The power MOSFET with 800 V breakdown voltage allows extended input voltage range to be applied, as well as to reduce the size of the DRAIN snubber circuit. This IC is capable of meeting the most stringent energy-saving standards as it has very low consump ...
transformers - Crompton Instruments
... A transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction (also called transformer action). It is most often used to step up or step down voltage. Occasionally, it is used as an isolating device to eliminate a direct mechanical electrical con ...
... A transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction (also called transformer action). It is most often used to step up or step down voltage. Occasionally, it is used as an isolating device to eliminate a direct mechanical electrical con ...
Experiment 2 - Rensselaer Polytechnic Institute
... Transfer Functions: We know that a circuit with only resistors will behave the same at any frequency. A voltage divider with two 1K resistors divides a voltage in half at 10 Hertz as well as it does at 100K hertz. We also know that circuits containing capacitors and/or inductors behave very differen ...
... Transfer Functions: We know that a circuit with only resistors will behave the same at any frequency. A voltage divider with two 1K resistors divides a voltage in half at 10 Hertz as well as it does at 100K hertz. We also know that circuits containing capacitors and/or inductors behave very differen ...
MAX8597/MAX8598/MAX8599 Low-Dropout, Wide-Input-Voltage, Step-Down Controllers General Description
... 4.5V to 28V input supply and generate output voltages down to 0.6V. A proprietary switching algorithm stretches the duty cycle to >99.5% for low-dropout design. Unlike conventional step-down regulators using a pchannel high-side MOSFET to achieve high duty cycle, the MAX8597/MAX8598/MAX8599 drive n- ...
... 4.5V to 28V input supply and generate output voltages down to 0.6V. A proprietary switching algorithm stretches the duty cycle to >99.5% for low-dropout design. Unlike conventional step-down regulators using a pchannel high-side MOSFET to achieve high duty cycle, the MAX8597/MAX8598/MAX8599 drive n- ...
Advanced Current-Mode Active Clamp PWM
... The UCC2897 controller are equipped with a high voltage, P-channel JFET start up device to initiate operation from the input power source of the converter in applications where the input voltage does not exceed the 110-V maximum rating of the start up transistor. In these applications, the VIN pin c ...
... The UCC2897 controller are equipped with a high voltage, P-channel JFET start up device to initiate operation from the input power source of the converter in applications where the input voltage does not exceed the 110-V maximum rating of the start up transistor. In these applications, the VIN pin c ...
TPS40007 数据资料 dataSheet 下载
... During each switching cycle, a comparator looks at the voltage across the top side MOSFET while it is on. This comparator is enabled after the SW node reaches a voltage greater than (VDD−1.2 V) followed by a 100-ns blanking time. If the voltage across that MOSFET exceeds the programmed voltage, the ...
... During each switching cycle, a comparator looks at the voltage across the top side MOSFET while it is on. This comparator is enabled after the SW node reaches a voltage greater than (VDD−1.2 V) followed by a 100-ns blanking time. If the voltage across that MOSFET exceeds the programmed voltage, the ...
BD9G101G
... This block does Soft Start to the output voltage of DC/DC comparator, and prevents in-rush current during Start-up. Soft Start Time depend on application and start-condition because Frequency fold-back function is built in. ...
... This block does Soft Start to the output voltage of DC/DC comparator, and prevents in-rush current during Start-up. Soft Start Time depend on application and start-condition because Frequency fold-back function is built in. ...
installation operation and maintenance siltronix model 1011d
... Converter attaches to the rear of the Model 1011D transceiver and converts it to 12-14 volts D.C. input. The 14A D.C. Converter is for normal negative ground systems. Two No. 6 sheet metal screws must be used to attach the 14A firmly to the transceiver. The Model 14A is conservatively designed for l ...
... Converter attaches to the rear of the Model 1011D transceiver and converts it to 12-14 volts D.C. input. The 14A D.C. Converter is for normal negative ground systems. Two No. 6 sheet metal screws must be used to attach the 14A firmly to the transceiver. The Model 14A is conservatively designed for l ...
Issues, Models and Solutions for Triac Modulated Phase Dimming of
... presented in Fig.4. The dimmer block in the figure is represented by the detailed dimmer switch model in Fig. 3.When used with a dimmer switch, the charging current of the filter capacitor is limited by the dimming resistance R1 (inside the dimmer, see Fig. 2) and is Icharge = (Vin – Vload – Vc1)/R1 ...
... presented in Fig.4. The dimmer block in the figure is represented by the detailed dimmer switch model in Fig. 3.When used with a dimmer switch, the charging current of the filter capacitor is limited by the dimming resistance R1 (inside the dimmer, see Fig. 2) and is Icharge = (Vin – Vload – Vc1)/R1 ...
three-level npc inverter used in ups
... IGBTs connected in series. The NPC-3L inverter uses two split capacitors in series for DC link, and produces zero voltage level. Thus, the voltage drop on the IGBT will be Udc/2 which is one-half that of the conventional twolevel inverter, where Udc is the total voltage of DC link. This feature make ...
... IGBTs connected in series. The NPC-3L inverter uses two split capacitors in series for DC link, and produces zero voltage level. Thus, the voltage drop on the IGBT will be Udc/2 which is one-half that of the conventional twolevel inverter, where Udc is the total voltage of DC link. This feature make ...
Conductive Polymer Aluminum Solid Electrolytic Capacitors "PZ
... Comparison of output noise was conducted with actual circuit board.(Fig-5,Fig-6) The used circuit is a universal output circuit. A PZA capacitor (35V-82µF, φ8x12.5L) was compared with a non-solid electrolytic capacitor (35V-220µF, φ10x12.5L). Level of output noise for the PZA capacitor was equivalen ...
... Comparison of output noise was conducted with actual circuit board.(Fig-5,Fig-6) The used circuit is a universal output circuit. A PZA capacitor (35V-82µF, φ8x12.5L) was compared with a non-solid electrolytic capacitor (35V-220µF, φ10x12.5L). Level of output noise for the PZA capacitor was equivalen ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""