six light troubleshooting.fm
... The Status Light Panel is normally located on the Electrical Panel. All six lights are illuminated when the system is in proper working order. The lights turn on in a sequence and will stop at the point where a fault is first detected. ...
... The Status Light Panel is normally located on the Electrical Panel. All six lights are illuminated when the system is in proper working order. The lights turn on in a sequence and will stop at the point where a fault is first detected. ...
A Compact High Voltage Nanosecond Pulse Generator
... A nanosecond pulse generator circuit was constructed using two CMOS digital ICs based on a published report [11]. One IC was a retriggerable monostable multivibrator and the other was a D flip flop. The retriggerable monostable multivibrator produces pulses depending upon the value of one external c ...
... A nanosecond pulse generator circuit was constructed using two CMOS digital ICs based on a published report [11]. One IC was a retriggerable monostable multivibrator and the other was a D flip flop. The retriggerable monostable multivibrator produces pulses depending upon the value of one external c ...
EMPGUN1 Electromagnetic Pulse (EMP) Gun
... The ability of a signal to disrupt sensitive circuitry requires several properties. Most micro processors consist of field effect transistors (FET) operating at very low voltages. Once these voltages are exceeded, catastrophic failure becomes imminent. Forgiveness to an over voltage fault is practic ...
... The ability of a signal to disrupt sensitive circuitry requires several properties. Most micro processors consist of field effect transistors (FET) operating at very low voltages. Once these voltages are exceeded, catastrophic failure becomes imminent. Forgiveness to an over voltage fault is practic ...
REVIEW OF UPQC CONTROL TECHNIQUES FOR POWER
... a highly inductive nature loads at the point of common coupling (PCC). These can compensate by shunt APF connected with the load and loads such as diode bridge rectifier with high dc capacitive filters draws a high power supplies in terms of AC to DC form for AC drives. These types of loads are mana ...
... a highly inductive nature loads at the point of common coupling (PCC). These can compensate by shunt APF connected with the load and loads such as diode bridge rectifier with high dc capacitive filters draws a high power supplies in terms of AC to DC form for AC drives. These types of loads are mana ...
Final Year Project - NUI Galway CompSoc
... that the lowest power LED needed a minimum of 3.8 milliAmps and a minimum of 1.83 volts to light. This meant the voltage & current output from the fuel cell needed to be stepped up. There is three solutions to this problem: 1) Cascade a number of fuel cells in parallel, this way increasing the curre ...
... that the lowest power LED needed a minimum of 3.8 milliAmps and a minimum of 1.83 volts to light. This meant the voltage & current output from the fuel cell needed to be stepped up. There is three solutions to this problem: 1) Cascade a number of fuel cells in parallel, this way increasing the curre ...
Frequency response of feedback amplifiers
... frequency compensation is not needed for comparator because it is not operated in negative feedback. • So, roughly, OpAmp can be used as a comparator circuit, but not vice versa due to frequency compensation. • Comparator is usually designed to have small transition region and small propagation dela ...
... frequency compensation is not needed for comparator because it is not operated in negative feedback. • So, roughly, OpAmp can be used as a comparator circuit, but not vice versa due to frequency compensation. • Comparator is usually designed to have small transition region and small propagation dela ...
a AN-534 APPLICATION NOTE
... signal and allows a host application (master) to get two or more digital updates per second from a field device. As the digital FSK signal is phase continuous, there is no interference with the 4 mA–20 mA signal. Two different frequencies, 1200 Hz and 2200 Hz respectively, are used to represent bina ...
... signal and allows a host application (master) to get two or more digital updates per second from a field device. As the digital FSK signal is phase continuous, there is no interference with the 4 mA–20 mA signal. Two different frequencies, 1200 Hz and 2200 Hz respectively, are used to represent bina ...
TS19452CS RLG Datasheet
... The TS19452 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 12µS. The LED string is driven at constant current, ...
... The TS19452 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 12µS. The LED string is driven at constant current, ...
3366 External Power Supply
... power source). Larger batteries (up to 60 Ah) have to be placed outside the housing. The unit is addressable, i.e. it is connected to a COM loop and monitored from the c.i.e. and e.g. loss of the main power source (230 V AC) will generate a fault in the c.i.e. There are many cable inlets in the hous ...
... power source). Larger batteries (up to 60 Ah) have to be placed outside the housing. The unit is addressable, i.e. it is connected to a COM loop and monitored from the c.i.e. and e.g. loss of the main power source (230 V AC) will generate a fault in the c.i.e. There are many cable inlets in the hous ...
dp series insertion impeller meters
... DP SERIES INSERTION IMPELLER METERS DP Insertion Impeller Meters are cost effective stainless steel flowmeters for measuring the flow of water, fuel and other low viscosity liquids in pipe sizes 1 ½" to 100" (40 mm to 2500mm). Insertion flow meters are installed with the metering head 1/8th into the ...
... DP SERIES INSERTION IMPELLER METERS DP Insertion Impeller Meters are cost effective stainless steel flowmeters for measuring the flow of water, fuel and other low viscosity liquids in pipe sizes 1 ½" to 100" (40 mm to 2500mm). Insertion flow meters are installed with the metering head 1/8th into the ...
MPS_Lab_Ex4-ADC
... the signal generator. Explain your results. You should be able to show in the Z-plane that the discrete time system has a zero on the unit circle where the output is a minimum and a pole near the unit circle where the output is a maximum. The output for inputs near DC will have high gains and may ca ...
... the signal generator. Explain your results. You should be able to show in the Z-plane that the discrete time system has a zero on the unit circle where the output is a minimum and a pole near the unit circle where the output is a maximum. The output for inputs near DC will have high gains and may ca ...
FlexMod™ LVD Low Voltage Disconnect
... • When Override is activated while the LVD is off due to low battery voltage, the loads will toggle on. After 15 minutes, the LVD will resume monitoring battery voltage. If during the 15 minute period the battery voltage rises above the upper limit for ten seconds, the 15 minute delay is exited and ...
... • When Override is activated while the LVD is off due to low battery voltage, the loads will toggle on. After 15 minutes, the LVD will resume monitoring battery voltage. If during the 15 minute period the battery voltage rises above the upper limit for ten seconds, the 15 minute delay is exited and ...
TS19452_A12
... The TS19452 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 12µS. The LED string is driven at constant current, ...
... The TS19452 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 12µS. The LED string is driven at constant current, ...
a novel transformer-less interleaved four-phase step
... divider operating from a 400V DC bus is used to achieve a high step-down conversion ratio with a moderate duty ratio. Based on the capacitive voltage division, the proposed converter achieves two major objectives, i.e., increased voltage conversion ratio, due to energy storage in the blocking capaci ...
... divider operating from a 400V DC bus is used to achieve a high step-down conversion ratio with a moderate duty ratio. Based on the capacitive voltage division, the proposed converter achieves two major objectives, i.e., increased voltage conversion ratio, due to energy storage in the blocking capaci ...
ARCCOM String Combiner
... Yaskawa - Solectria Solar’s ARCCOM offers customers the best quality, ease of installation, mounting flexibility, safety and protection features. It is compliant with NEC 2014 arc-fault and rapid shutdown requirements and contains a contactor disconnect, lockable switch and string level arc-fault pr ...
... Yaskawa - Solectria Solar’s ARCCOM offers customers the best quality, ease of installation, mounting flexibility, safety and protection features. It is compliant with NEC 2014 arc-fault and rapid shutdown requirements and contains a contactor disconnect, lockable switch and string level arc-fault pr ...
Poster
... produced and sensed by a different actuator-sensor pair or more than one actuator-sensor pair. A transducer can act as an actuator or a sensor. An actuator makes waves and a sensor senses them. Eventually an identical film with a cut in it will be used. The purpose of this research is to see if a pa ...
... produced and sensed by a different actuator-sensor pair or more than one actuator-sensor pair. A transducer can act as an actuator or a sensor. An actuator makes waves and a sensor senses them. Eventually an identical film with a cut in it will be used. The purpose of this research is to see if a pa ...
Paper Title (use style: paper title)
... important “Mixed-Signal” device used in transceivers, communication systems etc. The PLL recovers clock from digital data signals, recovers the carrier from satellite transmission signals, performs frequency and phase modulation and demodulation and synthesize exact frequencies for receiver tuning. ...
... important “Mixed-Signal” device used in transceivers, communication systems etc. The PLL recovers clock from digital data signals, recovers the carrier from satellite transmission signals, performs frequency and phase modulation and demodulation and synthesize exact frequencies for receiver tuning. ...
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.