chapter 6
... In the half wave rectifier (Fig. 6.1a) the capacitor is charged to Vmax, the maximum a.c. voltage of the secondary of the high voltage transformer in the conducting half cycle. In the other half cycle, the capacitor is discharged into the load. The value of the capacitor C is chosen such that the ti ...
... In the half wave rectifier (Fig. 6.1a) the capacitor is charged to Vmax, the maximum a.c. voltage of the secondary of the high voltage transformer in the conducting half cycle. In the other half cycle, the capacitor is discharged into the load. The value of the capacitor C is chosen such that the ti ...
AN3257
... downstream multi-resonant half bridge converter. Both stages are controlled by the new IC L6585DE- which integrates PFC and half bridge control circuits and the relevant drivers. Although this new device is dedicated to managing electronic ballast, it's possible to use it also for a HB-LLC resonant ...
... downstream multi-resonant half bridge converter. Both stages are controlled by the new IC L6585DE- which integrates PFC and half bridge control circuits and the relevant drivers. Although this new device is dedicated to managing electronic ballast, it's possible to use it also for a HB-LLC resonant ...
Section B9: Zener Diodes
... avalanche multiplication. This process begins with thermally generated minority carriers that acquire enough kinetic energy to break covalent bonds and create an EHP through collisions with crystal atoms. The free carriers created through this collision contribute to the reverse current and may also ...
... avalanche multiplication. This process begins with thermally generated minority carriers that acquire enough kinetic energy to break covalent bonds and create an EHP through collisions with crystal atoms. The free carriers created through this collision contribute to the reverse current and may also ...
Different Self Excitation Techniques for Slip Ring Self
... by externally varying the rotor impedance (resistance). Added rotor resistance is replaced by static control units, slip energy recovery systems such as Kramer, current source invertors and chopper circuits. Limitations of autonomous induction generator systems where capacitors provide reactive powe ...
... by externally varying the rotor impedance (resistance). Added rotor resistance is replaced by static control units, slip energy recovery systems such as Kramer, current source invertors and chopper circuits. Limitations of autonomous induction generator systems where capacitors provide reactive powe ...
DS1088C Fixed-Frequency EconoOscillator™ General Description Features
... oscillator output for power-sensitive applications. The power-down pin must remain low for at least two output frequency cycles plus 10µs for deglitching purposes. On power-up, the output is disabled until power is stable and the voltage-controlled oscillator has generated 512 clock cycles. ...
... oscillator output for power-sensitive applications. The power-down pin must remain low for at least two output frequency cycles plus 10µs for deglitching purposes. On power-up, the output is disabled until power is stable and the voltage-controlled oscillator has generated 512 clock cycles. ...
Forward Type Switched Mode Power Supply
... Dotted sides of both the windings are now having positive polarity. Diode ‘D1’, connected in series with the secondary winding gets forward biased and the scaled input voltage is applied to the low pass filter circuit preceding the load. The primary winding current enters through its dotted end whil ...
... Dotted sides of both the windings are now having positive polarity. Diode ‘D1’, connected in series with the secondary winding gets forward biased and the scaled input voltage is applied to the low pass filter circuit preceding the load. The primary winding current enters through its dotted end whil ...
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 ...
Switching of capacitor banks using a SynchroTeq
... SynchroTeq products are perfectly adapted for fast switching of capacitor banks and filters. In many applications such as static VAR compensation (SVC) and STATCOM (static compensators), very rapid switching sequences are required where the operation of the CB cannot be blocked due to the presence o ...
... SynchroTeq products are perfectly adapted for fast switching of capacitor banks and filters. In many applications such as static VAR compensation (SVC) and STATCOM (static compensators), very rapid switching sequences are required where the operation of the CB cannot be blocked due to the presence o ...
TWO STEP CURRENT INCREASES IN GLOW
... two distinct processes. The first corresponds to the occurrence of one or more physical events which lead to the creation of an initial electron. This is the Poisson random process, and the time necessary for the appearance of the initial electron is statistical time delay tS. The second process is ...
... two distinct processes. The first corresponds to the occurrence of one or more physical events which lead to the creation of an initial electron. This is the Poisson random process, and the time necessary for the appearance of the initial electron is statistical time delay tS. The second process is ...
TWO STEP CURRENT INCREASES IN GLOW
... two distinct processes. The first corresponds to the occurrence of one or more physical events which lead to the creation of an initial electron. This is the Poisson random process, and the time necessary for the appearance of the initial electron is statistical time delay tS. The second process is ...
... two distinct processes. The first corresponds to the occurrence of one or more physical events which lead to the creation of an initial electron. This is the Poisson random process, and the time necessary for the appearance of the initial electron is statistical time delay tS. The second process is ...
Optimized Pulse Patterns for the 5-Level ANPC
... The appropriate switching state for a charge or discharge of the capacitor is chosen according to the actual current direction. The switching devices S5 to S8 are chosen to be IGCTs as they must withstand double the voltage rating of S1 to S4 and only need to switch at the fundamental frequency. The ...
... The appropriate switching state for a charge or discharge of the capacitor is chosen according to the actual current direction. The switching devices S5 to S8 are chosen to be IGCTs as they must withstand double the voltage rating of S1 to S4 and only need to switch at the fundamental frequency. The ...
AN9506: A 50W, 500kHz, Full-Bridge, Phase-Shift, ZVS
... charge forces the voltage across MOSFET A to zero (MOSFET B ZVS occurs during the cycles second half), enabling zero voltage switching to take place. Here the MOSFETs output capacitances form a resonant circuit with the resonant inductance. The charge is displaced in a time equal to one-fourth the r ...
... charge forces the voltage across MOSFET A to zero (MOSFET B ZVS occurs during the cycles second half), enabling zero voltage switching to take place. Here the MOSFETs output capacitances form a resonant circuit with the resonant inductance. The charge is displaced in a time equal to one-fourth the r ...
Synchronous Voltage Source Inverter Using FCMLI
... power flow from the system to STATCOM which also increases the line drop and reduces the midpoint voltage. As the dc capacitor charges to the required value, the midpoint terminal voltage reaches to its reference value. The real power and the reactive power at the sending end and receiving end are s ...
... power flow from the system to STATCOM which also increases the line drop and reduces the midpoint voltage. As the dc capacitor charges to the required value, the midpoint terminal voltage reaches to its reference value. The real power and the reactive power at the sending end and receiving end are s ...
Voltage optimisation Measurement and Verification guidance
... These are constant power devices and have their own power regulators. They operate satisfactorily within an operating voltage range. If 30 % or more of a site’s electrical load is made up of switch mode power supplies (SMPS), such as information technology in particular, the supplying circuit’s suit ...
... These are constant power devices and have their own power regulators. They operate satisfactorily within an operating voltage range. If 30 % or more of a site’s electrical load is made up of switch mode power supplies (SMPS), such as information technology in particular, the supplying circuit’s suit ...
FSFR-HS Series — Advanced Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters
... This pin is used for controlling the switching frequency in normal operation. When any protections are triggered, the internal Auto/Restart (A/R) circuit starts to sense the voltage on the pin, which is discharged naturally by external resistance. The IC can be operated with A/R when the voltage dec ...
... This pin is used for controlling the switching frequency in normal operation. When any protections are triggered, the internal Auto/Restart (A/R) circuit starts to sense the voltage on the pin, which is discharged naturally by external resistance. The IC can be operated with A/R when the voltage dec ...
D306A Electroluminescent Lamp Driver with Microcontroller
... Theory of Operation Electroluminescent lamps are essentially capacitors with one transparent electrode and a special phosphor material in the dielectric. The phosphor glows when a strong AC voltage is applied across the EL lamp electrodes. The required AC voltage is typically not present in most sy ...
... Theory of Operation Electroluminescent lamps are essentially capacitors with one transparent electrode and a special phosphor material in the dielectric. The phosphor glows when a strong AC voltage is applied across the EL lamp electrodes. The required AC voltage is typically not present in most sy ...
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.""