"SCR (Silicon-Controlled Rectifier) Dimming Technology in LED
... There are different dimming technologies to control the brightness of a light source. They include AC/DC dimmer, amplitude/phase dimmer, active/passive dimmer, step/stepless dimmer. In addition, there is the rheostat dimmer, autotransformer dimmer or SCR (Silicon-controlled Rectifier) dimmer. Among ...
... There are different dimming technologies to control the brightness of a light source. They include AC/DC dimmer, amplitude/phase dimmer, active/passive dimmer, step/stepless dimmer. In addition, there is the rheostat dimmer, autotransformer dimmer or SCR (Silicon-controlled Rectifier) dimmer. Among ...
No Slide Title
... Animal chewed through cable Cable jacket is damaged by weed-eater Cable stapled or kinked Improper ground Improper electrical outlet Improper Connectors Damage to reflector or mount ...
... Animal chewed through cable Cable jacket is damaged by weed-eater Cable stapled or kinked Improper ground Improper electrical outlet Improper Connectors Damage to reflector or mount ...
The New V/I Characteristic Expression
... In the sub-clause 4.21.3 under the clause, it is stipulated that the maximum continuous d.c. or a.c. voltage shall be applied in cycles of 1,5 h on and 0,5 h off throughout the test lasting for 1000 h. As far as we know, however, none of varistor manufacturers and testing organizations is really usi ...
... In the sub-clause 4.21.3 under the clause, it is stipulated that the maximum continuous d.c. or a.c. voltage shall be applied in cycles of 1,5 h on and 0,5 h off throughout the test lasting for 1000 h. As far as we know, however, none of varistor manufacturers and testing organizations is really usi ...
Design of a Regenerative Receiver for the Short-Wave - Inictel-UNI
... is the device's gm (transconductance) tendency to increase with output current, making it very difficult to obtain a smooth regeneration control. Small gm’s facilitate gain control. Hence, lower operating-point currents. The idea is to have perhaps some 60% of the required gain for oscillation with ...
... is the device's gm (transconductance) tendency to increase with output current, making it very difficult to obtain a smooth regeneration control. Small gm’s facilitate gain control. Hence, lower operating-point currents. The idea is to have perhaps some 60% of the required gain for oscillation with ...
MAX9643 Evaluation Kit Evaluates: MAX9643 General Description Features
... Monitoring the Load Current ...
... Monitoring the Load Current ...
GK-12 Breadboard Tips and Techniques for Digital Circuit
... connected together in rows rather than in column. For example, the red wire coming down from one of the power connector connects the entire row. The black wire from the other connector connects the other row. However, notice that the power rails are split at the center. There are no internal connect ...
... connected together in rows rather than in column. For example, the red wire coming down from one of the power connector connects the entire row. The black wire from the other connector connects the other row. However, notice that the power rails are split at the center. There are no internal connect ...
Substation Tranisents and Solid State Controls
... protective relays featured simple surge filters to minimize adverse effects. Figure 1 illustrates the reasons for this concern. The basic operating times and power levels for solid state devices (transistors and later, integrated circuits) are several orders of magnitude less than for electromechani ...
... protective relays featured simple surge filters to minimize adverse effects. Figure 1 illustrates the reasons for this concern. The basic operating times and power levels for solid state devices (transistors and later, integrated circuits) are several orders of magnitude less than for electromechani ...
peak-to-average power ratio (PAR) of 3.3dB. The spectral
... power efficiency to <70-80% includes the finite switching speed, switch loss, passive component loss, device breakdown, and voltage rail limitations. The optimum Class E PA switch device has attributes of a fast digital device and high breakdown power device. The higher device breakdown becomes impo ...
... power efficiency to <70-80% includes the finite switching speed, switch loss, passive component loss, device breakdown, and voltage rail limitations. The optimum Class E PA switch device has attributes of a fast digital device and high breakdown power device. The higher device breakdown becomes impo ...
expt10
... impedances. The circuit we will use is shown below. In this circuit resistors R 1 and R2 are used to set the base to the desired DC operating voltage. Often in circuits of this kind, one uses an input capacitor to decouple the DC voltage level of vin from the base. In the present circuit what we do ...
... impedances. The circuit we will use is shown below. In this circuit resistors R 1 and R2 are used to set the base to the desired DC operating voltage. Often in circuits of this kind, one uses an input capacitor to decouple the DC voltage level of vin from the base. In the present circuit what we do ...
Evaluates: MAX15038/MAX15039 MAX15038 Evaluation Kit General Description Features
... 24-pin TQFN surface-mount package with an exposed pad. Applications include enterprise-server, telecommunication, computing, and networking power supplies. The EV kit generates selectable output voltages from 0.6V to 2.5V at load currents up to 4A. The output voltage should be configured only BEFORE ...
... 24-pin TQFN surface-mount package with an exposed pad. Applications include enterprise-server, telecommunication, computing, and networking power supplies. The EV kit generates selectable output voltages from 0.6V to 2.5V at load currents up to 4A. The output voltage should be configured only BEFORE ...
PRESETTABLE UP/DOWN COUNTERS
... (*) Typical temperature coefficient for all VDD value is 0.3 %/°C. (1) Time required after the falling edge of the reset or preset enable inputs before the rising edge of the clock will trigger the counter (similar to setup time) (2) If more than unit is cascaded in the parallel clocked application, ...
... (*) Typical temperature coefficient for all VDD value is 0.3 %/°C. (1) Time required after the falling edge of the reset or preset enable inputs before the rising edge of the clock will trigger the counter (similar to setup time) (2) If more than unit is cascaded in the parallel clocked application, ...
Evaluates: MAX1813 MAX1813 Evaluation Kit General Description Features
... be plugged directly into the jack. Otherwise, EMI and noise pickup will corrupt the waveforms. Most benchtop electronic loads intended for powersupply testing lack the ability to subject the DC-DC converter to ultra-fast load transients. Emulating the supply current di/dt at the CPU VCORE pins requi ...
... be plugged directly into the jack. Otherwise, EMI and noise pickup will corrupt the waveforms. Most benchtop electronic loads intended for powersupply testing lack the ability to subject the DC-DC converter to ultra-fast load transients. Emulating the supply current di/dt at the CPU VCORE pins requi ...
Lab Manual of Basic Electrical Engineering LAB
... the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separateexcitation or self-excitation for all or part of the energy transferred from stator to rotor, as in ...
... the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separateexcitation or self-excitation for all or part of the energy transferred from stator to rotor, as in ...
TPS6205x 800-mA Synchronous Step
... The TPS6205x family of devices are synchronous step-down converters that operate with a 850-kHz fixedfrequency pulse width modulation (PWM) at moderate to heavy load currents and enters the power save mode at light load current. During PWM operation, the converter uses a unique fast response voltage ...
... The TPS6205x family of devices are synchronous step-down converters that operate with a 850-kHz fixedfrequency pulse width modulation (PWM) at moderate to heavy load currents and enters the power save mode at light load current. During PWM operation, the converter uses a unique fast response voltage ...
MAX1639 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power ________________General Description
... Synchronous Rectification for CPU Power Gate-drive voltage for the high-side N-channel switch is generated using a flying-capacitor boost circuit (Figure 3). The capacitor is alternately charged from the +5V supply and placed in parallel with the highside MOSFET’s gate and source terminals. Gate-dri ...
... Synchronous Rectification for CPU Power Gate-drive voltage for the high-side N-channel switch is generated using a flying-capacitor boost circuit (Figure 3). The capacitor is alternately charged from the +5V supply and placed in parallel with the highside MOSFET’s gate and source terminals. Gate-dri ...
Data Sheet - Asahi Kasei Microdevices
... When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei Microdevices Corporation (AKM) or authorized distributors as to current status of the products. Descriptions of external circuits, application circuits, software and other related info ...
... When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei Microdevices Corporation (AKM) or authorized distributors as to current status of the products. Descriptions of external circuits, application circuits, software and other related info ...
A1354 - Allegro MicroSystems
... voltage duty cycle, D(Q) , to settle within ±5% of its steady state value, after the power supply has reached its minimum specified operating voltage, VCC(min). Response Time The time interval, tRESPONSE , between a) when the applied magnetic field reaches 90% of its final value, and b) when the dev ...
... voltage duty cycle, D(Q) , to settle within ±5% of its steady state value, after the power supply has reached its minimum specified operating voltage, VCC(min). Response Time The time interval, tRESPONSE , between a) when the applied magnetic field reaches 90% of its final value, and b) when the dev ...
B3603DC-DC Digital Control
... This module has three special functions, the default is closed, if necessary, you can open them. Function 0:After electricity,it will automatically output. Function 1: Save and bring up the parameters, display the power and capacity. Function 2: Automatic take turns to show parameters after output ...
... This module has three special functions, the default is closed, if necessary, you can open them. Function 0:After electricity,it will automatically output. Function 1: Save and bring up the parameters, display the power and capacity. Function 2: Automatic take turns to show parameters after output ...
BM 6a mk II.qxp
... 3. Balanced analog Input Audio Input is via a female XLR connector. The Input is electronically balanced with following connections. The connections are printed on the rear for easy reference. ...
... 3. Balanced analog Input Audio Input is via a female XLR connector. The Input is electronically balanced with following connections. The connections are printed on the rear for easy reference. ...
Genelec 1032A Monitoring Speaker Operating
... vibration isolators, to ensure rattle free operation and long term reliability. The bass and treble amplifier produce 180 W and 120 W, respectively, of short term power. The fast, low distortion amplifiers are capable of driving the stereo system to peak output levels in excess of 124 dB SPL at 1 m. ...
... vibration isolators, to ensure rattle free operation and long term reliability. The bass and treble amplifier produce 180 W and 120 W, respectively, of short term power. The fast, low distortion amplifiers are capable of driving the stereo system to peak output levels in excess of 124 dB SPL at 1 m. ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.