File
... IR IC receiver (Siemens SFH-506-38 or equivalent) that can detect 38kHz burst frequency generated by a TV remote. Transistor T1 is configured as an open-collector output device to drive the buzzer ...
... IR IC receiver (Siemens SFH-506-38 or equivalent) that can detect 38kHz burst frequency generated by a TV remote. Transistor T1 is configured as an open-collector output device to drive the buzzer ...
Lessons in AC Circuits
... vapors, the practical problems of spark-producing brush contacts are even greater. An AC generator (alternator) does not require brushes and commutators to work, and so is immune to these problems experienced by DC generators. The benefits of AC over DC with regard to generator design is also reflec ...
... vapors, the practical problems of spark-producing brush contacts are even greater. An AC generator (alternator) does not require brushes and commutators to work, and so is immune to these problems experienced by DC generators. The benefits of AC over DC with regard to generator design is also reflec ...
notes
... Remember that Y3k is the element in position row 3, column k, of the Y bus. It is NOT the admittance of the circuit connecting buses 3 and k, and therefore G3k and B3k are NOT the conductance and susceptance, respectively, of the circuit connecting buses 3 and k (contrary to what the book says on pa ...
... Remember that Y3k is the element in position row 3, column k, of the Y bus. It is NOT the admittance of the circuit connecting buses 3 and k, and therefore G3k and B3k are NOT the conductance and susceptance, respectively, of the circuit connecting buses 3 and k (contrary to what the book says on pa ...
Residual current devices in LV
... dangerous for voltages in excess of UL. The main protection precautions to be taken are distance and insulation. The RCD can detect a fault current flowing through a person and, as such, is specified, regardless of the earthing system, in final distribution as an additional protection. Its operating ...
... dangerous for voltages in excess of UL. The main protection precautions to be taken are distance and insulation. The RCD can detect a fault current flowing through a person and, as such, is specified, regardless of the earthing system, in final distribution as an additional protection. Its operating ...
Solid-state Power OFF-delay Timer H3DR-H
... to the operating circuit. The timer remains in the OFF state until the re-application of the voltage to the operating circuit. This timer is also available in two types; one with a power supply also serving as an operating circuit, and the other with separate power supply and operating circuit. With ...
... to the operating circuit. The timer remains in the OFF state until the re-application of the voltage to the operating circuit. This timer is also available in two types; one with a power supply also serving as an operating circuit, and the other with separate power supply and operating circuit. With ...
Can you dim 100x 5W LED`s with a 500W dimmer?
... Can you dim 100x 5W LED's with a 500W dimmer? LED lighting technology provides numerous advantages for the end user compared to the older incandescent and halogen technologies. But to the installer or specifier, this new technology often creates headaches when it comes to the practical implementatio ...
... Can you dim 100x 5W LED's with a 500W dimmer? LED lighting technology provides numerous advantages for the end user compared to the older incandescent and halogen technologies. But to the installer or specifier, this new technology often creates headaches when it comes to the practical implementatio ...
Greenslade Coils
... during sparking. It was soon discovered that there was an optimum value of the capacitance that produced a maximum output voltage. Although Henry Noad wrote in 1879 that the “functions of the capacitor are not clearly understood” (ref. 2), it became apparent by the end of the 19th century that the c ...
... during sparking. It was soon discovered that there was an optimum value of the capacitance that produced a maximum output voltage. Although Henry Noad wrote in 1879 that the “functions of the capacitor are not clearly understood” (ref. 2), it became apparent by the end of the 19th century that the c ...
Party Bonus Casino Game
... the dipole arms couple energy of equal magnitude and opposite phase onto the feed line, thus canceling induced current flow on the outside of the feed line (Ref 81). What is disturbing is the discovery that there are three paths for current flow in a coaxial feed line, instead of only two. How can t ...
... the dipole arms couple energy of equal magnitude and opposite phase onto the feed line, thus canceling induced current flow on the outside of the feed line (Ref 81). What is disturbing is the discovery that there are three paths for current flow in a coaxial feed line, instead of only two. How can t ...
SA615 High performance low power mixer FM IF system
... indicator, there must be a 12 dBV insertion loss between the first and second IF stages. If the IF filter or inter-stage network does not cause 12 dBV insertion loss, a fixed or variable resistor can be added between the first IF output (pin 16, IF_AMP_OUT) and the inter-stage network. The signal fr ...
... indicator, there must be a 12 dBV insertion loss between the first and second IF stages. If the IF filter or inter-stage network does not cause 12 dBV insertion loss, a fixed or variable resistor can be added between the first IF output (pin 16, IF_AMP_OUT) and the inter-stage network. The signal fr ...
ACTIVE CUBE
... the case of a linear drive). Mains voltage is still present. The function STO can be used, for example, for safe stopping in the case of a dangerous situation or for maintenance work on the machine. If an error occurs, the machine can still be (or remain) switched off safely. Unlike shut-down via ma ...
... the case of a linear drive). Mains voltage is still present. The function STO can be used, for example, for safe stopping in the case of a dangerous situation or for maintenance work on the machine. If an error occurs, the machine can still be (or remain) switched off safely. Unlike shut-down via ma ...
PRC CATALOG ISSUE NO 42 (PPre-Flight)
... 5ppm resistor is multiplied by 0.000005Ω or 0.005Ω change/°C Temperature - is the measure of heat or cold of an object or substance and directly related to the TCR and tolerance. Since the TCR char. is the variation in resistance above or below room ambient (23°C or 25°C) or a span that includes bot ...
... 5ppm resistor is multiplied by 0.000005Ω or 0.005Ω change/°C Temperature - is the measure of heat or cold of an object or substance and directly related to the TCR and tolerance. Since the TCR char. is the variation in resistance above or below room ambient (23°C or 25°C) or a span that includes bot ...
Classical Communication Systems
... A typical digital receiver system block diagram is shown in Fig. 12.2(a); associated waveforms are shown in Fig. 12.2(b). For now, assume a non-return-to-zero (NRZ) signal format; if a bit is a “one,” the signal is high during the entire bit interval; if a bit is zero, the signal is low during the e ...
... A typical digital receiver system block diagram is shown in Fig. 12.2(a); associated waveforms are shown in Fig. 12.2(b). For now, assume a non-return-to-zero (NRZ) signal format; if a bit is a “one,” the signal is high during the entire bit interval; if a bit is zero, the signal is low during the e ...
STHVDAC-303
... The HVDAC outputs are directly controlled by programming the 8-bit DAC (DAC A, DAC B and DAC C) through the 3-wire serial interface. The DAC stages are driven from a reference voltage, generating an analog output voltage driving a high voltage amplifier supplied from the boost converter (see HVDAC b ...
... The HVDAC outputs are directly controlled by programming the 8-bit DAC (DAC A, DAC B and DAC C) through the 3-wire serial interface. The DAC stages are driven from a reference voltage, generating an analog output voltage driving a high voltage amplifier supplied from the boost converter (see HVDAC b ...
a Low Voltage, Low Power, Factory-Calibrated 16-/24-Bit Dual AD7719
... The main ADC is factory-calibrated with AV DD = DVDD = 4 V, TA = 25°C, REFIN1(+) – REFIN1(–) = 2.5 V. If the user power supplies or temperature conditions are significantly different from these, internal full-scale calibration will restore this error to the published specification. System calibratio ...
... The main ADC is factory-calibrated with AV DD = DVDD = 4 V, TA = 25°C, REFIN1(+) – REFIN1(–) = 2.5 V. If the user power supplies or temperature conditions are significantly different from these, internal full-scale calibration will restore this error to the published specification. System calibratio ...
Liebert® FS Flywheel Energy Storage System™
... A. Off Mode - When the DC Flywheel is initially powered on, it shall enter the OFF Mode and magnetically levitate its rotating group. A manual user command will make the system transition from OFF Mode to STARTUP Mode if all startup conditions are met. The DC Flywheel shall also enter OFF Mode at th ...
... A. Off Mode - When the DC Flywheel is initially powered on, it shall enter the OFF Mode and magnetically levitate its rotating group. A manual user command will make the system transition from OFF Mode to STARTUP Mode if all startup conditions are met. The DC Flywheel shall also enter OFF Mode at th ...
Effects of Smoke on Functional Circuits NUREG/CR-6543 SAND97-2544
... smoke. Its hugh impedance (50 Mfl) was shorted by smoke during the exposure, but recovered after the smoke was vented. This shorting occurred for small concentrations of smoke produced by burning 3 g of fuel per cubic meter of air At medium and high fuel levels, the resistance of the HVLC circuit ty ...
... smoke. Its hugh impedance (50 Mfl) was shorted by smoke during the exposure, but recovered after the smoke was vented. This shorting occurred for small concentrations of smoke produced by burning 3 g of fuel per cubic meter of air At medium and high fuel levels, the resistance of the HVLC circuit ty ...
Technology Training that works
... • Electrical machines (either a motor or a generator) can be broadly classified as DC Machines and AC Machines – depending on the nature of supply given to them • An electrical machine can be interchangeably associated with either a motor or a generator • Fundamentals for a particular category (like ...
... • Electrical machines (either a motor or a generator) can be broadly classified as DC Machines and AC Machines – depending on the nature of supply given to them • An electrical machine can be interchangeably associated with either a motor or a generator • Fundamentals for a particular category (like ...
Switched-mode power supply
A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.