Using Electricity Revision Questions
... 14. The current flowing in an electric keyboard is measured as 800 mA. What voltage is required to operate the keyboard if it has a power rating of 7·2 W? 15. An electric fire has three heating elements which can be switched on and off independently. Each element has a power of 1·3 kW and is control ...
... 14. The current flowing in an electric keyboard is measured as 800 mA. What voltage is required to operate the keyboard if it has a power rating of 7·2 W? 15. An electric fire has three heating elements which can be switched on and off independently. Each element has a power of 1·3 kW and is control ...
IS32BL3552 - Integrated Silicon Solution
... and for the PWM dimming function. The biggest factors that contribute to the size of the output capacitor are: PWM dimming frequency and PWM duty cycle. Another major contributor is leakage current, ILK; the reverse current of the switching diode. In this design the PWM dimming frequency is to be 10 ...
... and for the PWM dimming function. The biggest factors that contribute to the size of the output capacitor are: PWM dimming frequency and PWM duty cycle. Another major contributor is leakage current, ILK; the reverse current of the switching diode. In this design the PWM dimming frequency is to be 10 ...
Full Wave Rectifier
... out of phase and have a VPK of exactly ½ the normal full VSEC, in this case 8.13V compared to 16.26V for the ½ wave and bridge rectifiers. When the 0.7 volts drop across the diode is taken into account the VPK is only 7.43V. Only one of the diodes is conducting at any one time, D1 during the +ve ½ c ...
... out of phase and have a VPK of exactly ½ the normal full VSEC, in this case 8.13V compared to 16.26V for the ½ wave and bridge rectifiers. When the 0.7 volts drop across the diode is taken into account the VPK is only 7.43V. Only one of the diodes is conducting at any one time, D1 during the +ve ½ c ...
A DESIGNERS GUIDE TO THE L200 VOLTAGE REGULATOR
... simplifies the design of linear supplies. This design guide describes the operation of the device and its applications. The introduction of integrated regulator circuits has greatly simplified the work involved in designing supplies. Regulation and protection circuits required for the supply, previo ...
... simplifies the design of linear supplies. This design guide describes the operation of the device and its applications. The introduction of integrated regulator circuits has greatly simplified the work involved in designing supplies. Regulation and protection circuits required for the supply, previo ...
BDTIC www.BDTIC.com/infineon ICB1FL03G Smart Ballast Control IC for
... PFCZCD (PFC zero current detection, Pin 7) This pin senses the point of time when the current through the boost inductor becomes zero during offtime of the PFC MOSFET in order to initiate a new cycle. The moment of interest appears when the voltage of the separate ZCD winding changes from positive t ...
... PFCZCD (PFC zero current detection, Pin 7) This pin senses the point of time when the current through the boost inductor becomes zero during offtime of the PFC MOSFET in order to initiate a new cycle. The moment of interest appears when the voltage of the separate ZCD winding changes from positive t ...
FST3126MX Datasheet - Mouser Electronics
... Other inputs at VCC or GND Note 4: Typical values are at VCC = 5.0V and T A = +25°C Note 5: Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is determined by the lower of the voltages on the two (A or B) pins. ...
... Other inputs at VCC or GND Note 4: Typical values are at VCC = 5.0V and T A = +25°C Note 5: Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is determined by the lower of the voltages on the two (A or B) pins. ...
Application Note AN4129 Green Current Mode PWM Controller FAN7601 1. Introduction www.fairchildsemi.com
... The maximum average current of the output diode is the same as the maximum load current. In this case, 4.167A is the maximum load current. For better efficiency, two 100V, 20A schottky diodes are used. The diode is reverse biased when MOSFET is turned on. The reverse voltage depends on the MOSFET sw ...
... The maximum average current of the output diode is the same as the maximum load current. In this case, 4.167A is the maximum load current. For better efficiency, two 100V, 20A schottky diodes are used. The diode is reverse biased when MOSFET is turned on. The reverse voltage depends on the MOSFET sw ...
p37-39 Feature Ixys - Power Electronics Europe
... this is fed to the tank circuit consisting of L2 and C2, which is tuned around 30kHz. L2 actually represents primary winding of a transformer, whose secondary is the pot or the pan that is placed above it. Here 35Ω represents reflected equivalent resistance of the pot or the pan’s conductive surface ...
... this is fed to the tank circuit consisting of L2 and C2, which is tuned around 30kHz. L2 actually represents primary winding of a transformer, whose secondary is the pot or the pan that is placed above it. Here 35Ω represents reflected equivalent resistance of the pot or the pan’s conductive surface ...
ENT 163 10-08 - UniMAP Portal
... From C to D – the rate at which the loop cuts the flux lines increases to a maximum at D, and then back to minimum again at A. Recall from Faraday’s law: When a wire moves through a magnetic field, a voltage is induced. According to Faraday’s Law – amount of induced voltage is proportional t ...
... From C to D – the rate at which the loop cuts the flux lines increases to a maximum at D, and then back to minimum again at A. Recall from Faraday’s law: When a wire moves through a magnetic field, a voltage is induced. According to Faraday’s Law – amount of induced voltage is proportional t ...
Ultracapacitor Based Ride Through System for Anand Vivek Ravi Vinod John
... the switch. The value of V is chosen such that the product V*d is maximum. This occurs at the minimum value of the ultracapacitor voltage. The required inductance is calculated as 300µH. The filter capacitor is chosen depending on the voltage ripple which is chosen to be less than 0.1%. The capacita ...
... the switch. The value of V is chosen such that the product V*d is maximum. This occurs at the minimum value of the ultracapacitor voltage. The required inductance is calculated as 300µH. The filter capacitor is chosen depending on the voltage ripple which is chosen to be less than 0.1%. The capacita ...
Model 12701 PEAK VOLTAGE CALIBRATOR OPERATING MANUAL
... 3.2.4 To be able to interpret the voltage reading from the scale, the difference between the starting voltage and the breaking voltage must be understood. Starting Voltage is the potential required to cause a spark initially to jump between an electrode and a metal object. This voltage is usually hi ...
... 3.2.4 To be able to interpret the voltage reading from the scale, the difference between the starting voltage and the breaking voltage must be understood. Starting Voltage is the potential required to cause a spark initially to jump between an electrode and a metal object. This voltage is usually hi ...
performance analysis of Unified Power Flow
... The ultimate reason that we are interested in power quality is the economic value. There are economic impacts on utilities, their customers, and suppliers of load equipment. The quality of power can have a direct economic impact on many industrial consumers. There has recently been a great emphasis ...
... The ultimate reason that we are interested in power quality is the economic value. There are economic impacts on utilities, their customers, and suppliers of load equipment. The quality of power can have a direct economic impact on many industrial consumers. There has recently been a great emphasis ...
AN-6073 FAN6751 — Highly Integrated Green-Mode PWM Controller Introduction
... the same for a fixed IPK, which is limited by the internal current limiting threshold voltage VTH and RS. However, due to the time delay from the comparator to output stage inside the FAN6751, the maximum output power with high-line input is always higher than with low line. A 30% error is common fo ...
... the same for a fixed IPK, which is limited by the internal current limiting threshold voltage VTH and RS. However, due to the time delay from the comparator to output stage inside the FAN6751, the maximum output power with high-line input is always higher than with low line. A 30% error is common fo ...
A Current-Sensorless Digital Controller for Active Power Factor
... discontinuous conduction mode such as [3]. High power converters (e.g., more than 1 kW) are best served with methods that use current sensors, such as [4-6]. The present work targets the middle range, where the excessive losses of the low-power techniques are undesirable and the current sensor is to ...
... discontinuous conduction mode such as [3]. High power converters (e.g., more than 1 kW) are best served with methods that use current sensors, such as [4-6]. The present work targets the middle range, where the excessive losses of the low-power techniques are undesirable and the current sensor is to ...
4CX1500B 8660
... modified to obtain equivalent cooling. The flow rate and corresponding pressure differential must be determined individually in such cases, using rated maximum temperatures as the criteria for satisfactory cooling. HEATER The rated heater voltage for the 4CXl500B is 6.0 Volts. The voltage, as measur ...
... modified to obtain equivalent cooling. The flow rate and corresponding pressure differential must be determined individually in such cases, using rated maximum temperatures as the criteria for satisfactory cooling. HEATER The rated heater voltage for the 4CXl500B is 6.0 Volts. The voltage, as measur ...
Electrical ballast
An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.