CHAPTER 4 RESULTS AND DISCUSSION 4.1 Introduction This
... before the modulation process the carrier frequency is followed the envelope of modulating signal. The amplitude of audio signal is impressed onto the amplitude of carrier signal, producing a modulated signal (RF). ...
... before the modulation process the carrier frequency is followed the envelope of modulating signal. The amplitude of audio signal is impressed onto the amplitude of carrier signal, producing a modulated signal (RF). ...
UFC SERIES PwrKartTM 400 Hz AND 270 VDC
... Since its beginning in 1960, Unitron has specialized in the design and development of reliable, solid-state power systems. Through an innovative design, Built-In Test Equipment (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time for the latest ...
... Since its beginning in 1960, Unitron has specialized in the design and development of reliable, solid-state power systems. Through an innovative design, Built-In Test Equipment (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time for the latest ...
ECP 11-0212 Electromagnetic Voltage Transformer Test Form
... Secondary winding 1 to earth Secondary winding 2 to earth Secondary winding 1 to secondary winding 2 VT HV Winding Continuity Continuity checked DC resistance at 20° to be checked against manufacturers figures when bushing is installed on site VT Secondary Links and Fuses Prove secondary winding ear ...
... Secondary winding 1 to earth Secondary winding 2 to earth Secondary winding 1 to secondary winding 2 VT HV Winding Continuity Continuity checked DC resistance at 20° to be checked against manufacturers figures when bushing is installed on site VT Secondary Links and Fuses Prove secondary winding ear ...
Comparison Between Vacuum Tube and Solid
... 2) Rectifies the boosted voltage, 12,500 Volts in this example, from alternate current (AC) to direct current (DC). The resulting DC voltage usually is above 13,000 Volts. Let us call this “Total Supply Voltage”. 3) Uses a type of design known as series regulation. In this design, the vaccum tube is ...
... 2) Rectifies the boosted voltage, 12,500 Volts in this example, from alternate current (AC) to direct current (DC). The resulting DC voltage usually is above 13,000 Volts. Let us call this “Total Supply Voltage”. 3) Uses a type of design known as series regulation. In this design, the vaccum tube is ...
Dr. K.P Ray SAMEEER, Mumbai
... Reactance provided by the tube capacitance Xc = j Zo tan (2/) L The length 'L' of the tuned co-axial line is given by: L = /2 tan-1 Xc / Zo Where = wavelength in cm Xc = reactance due to the inter-electrode capacitance Zo = characteristic impedance of the line (ohm) The 50 ohm matching point t ...
... Reactance provided by the tube capacitance Xc = j Zo tan (2/) L The length 'L' of the tuned co-axial line is given by: L = /2 tan-1 Xc / Zo Where = wavelength in cm Xc = reactance due to the inter-electrode capacitance Zo = characteristic impedance of the line (ohm) The 50 ohm matching point t ...
11 Electro-magnetic induction review answers
... State the direction of the induced electromotive force. The electrons will move up the wire so the bottom of the wire will become positive meaning the emf is up the wire. a. State the formula giving the size of this emf. Emf = Bvl = Magnetic flux density x velocity of wire x length of wire 2. In the ...
... State the direction of the induced electromotive force. The electrons will move up the wire so the bottom of the wire will become positive meaning the emf is up the wire. a. State the formula giving the size of this emf. Emf = Bvl = Magnetic flux density x velocity of wire x length of wire 2. In the ...
Investigation of LCR Resonance - Hong Kong University of Science
... The impedance of the circuit is Z R 2 ( wL Current of a LCR circuit is I rm s ...
... The impedance of the circuit is Z R 2 ( wL Current of a LCR circuit is I rm s ...
Project 1
... In this project, we build an AM crystal radio using a homemade capacitor and inductor. Crystal radios often use earphones, which is convenient since they don’t require a power source. Design The crystal radio can be illustrated as shown in Figure 1. The resonant circuit attenuates (makes smaller) al ...
... In this project, we build an AM crystal radio using a homemade capacitor and inductor. Crystal radios often use earphones, which is convenient since they don’t require a power source. Design The crystal radio can be illustrated as shown in Figure 1. The resonant circuit attenuates (makes smaller) al ...
Remote Emergency Notification System (RENS)
... Current sensor limitations – Require large operating voltages – High resistance in the electrodes – Require elevated sensor temperatures ...
... Current sensor limitations – Require large operating voltages – High resistance in the electrodes – Require elevated sensor temperatures ...
Lab 2 Applications of the 555 Timer
... was indistinguishable from by the human eye. The potentiometers were then adjusted to find the range of frequencyes that circuit could produce with the lowest frequency being 450Hz and the highest frequency around 13.5kHz which was close to the MultiSim ...
... was indistinguishable from by the human eye. The potentiometers were then adjusted to find the range of frequencyes that circuit could produce with the lowest frequency being 450Hz and the highest frequency around 13.5kHz which was close to the MultiSim ...
model vd-305a capacitive voltage divider
... connected to the center conductor of the output connector via a 50Ω resistor. The low-voltage capacitor connects the pickup ring to the outer conductor of the connector. The output voltage is thus a fraction of the input voltage determined by the ratio of the capacitances. The maximum pulse voltage ...
... connected to the center conductor of the output connector via a 50Ω resistor. The low-voltage capacitor connects the pickup ring to the outer conductor of the connector. The output voltage is thus a fraction of the input voltage determined by the ratio of the capacitances. The maximum pulse voltage ...
A Low-Power Wideband Polar Transmitter for 3G
... bandwidths. We show that our approach which strikes a balance between analog and digital calibration is simpler, more robust, and consumes less power. First we consider VCO linearization. A model-based pre-distortion [5] does not assure the well-controlled, stable, and linear VCO characteristic that ...
... bandwidths. We show that our approach which strikes a balance between analog and digital calibration is simpler, more robust, and consumes less power. First we consider VCO linearization. A model-based pre-distortion [5] does not assure the well-controlled, stable, and linear VCO characteristic that ...
10. RLC Circuit
... 2. Connect the function generator in series with a variable resistor, a solenoid, and a variable capacitor. Connect also the CH1 input of the oscilloscope to measure the voltage from the generator. The circuit is shown in the figure. Note that the black end of the cable from the function generator i ...
... 2. Connect the function generator in series with a variable resistor, a solenoid, and a variable capacitor. Connect also the CH1 input of the oscilloscope to measure the voltage from the generator. The circuit is shown in the figure. Note that the black end of the cable from the function generator i ...
Capacitor Charger Worksheet - Schulz
... RESERVOIR CHARGING SYSTEMS: Instead of a PFN capacitor, energy is stored in a large bank of electrolytic capacitors and discharged into the flashlamp through a high power transistor. The current into the flashlamp in this case is more like a square-wave. Customers have more flexibility with this sys ...
... RESERVOIR CHARGING SYSTEMS: Instead of a PFN capacitor, energy is stored in a large bank of electrolytic capacitors and discharged into the flashlamp through a high power transistor. The current into the flashlamp in this case is more like a square-wave. Customers have more flexibility with this sys ...
lab4a - inst.eecs.berkeley.edu
... In a BJT, shorting the collector and base forms a two-terminal device that behaves just like a diode. In a MOSFET, shorting the drain and gate gives a two-terminal device with behavior that is qualitatively diode-like, but has a (roughly) quadratic current-voltage relationship. Even though it’s deci ...
... In a BJT, shorting the collector and base forms a two-terminal device that behaves just like a diode. In a MOSFET, shorting the drain and gate gives a two-terminal device with behavior that is qualitatively diode-like, but has a (roughly) quadratic current-voltage relationship. Even though it’s deci ...
Rectifier filter capacitors
... Equivalent Series Resistance (ESR) of the capacitor in series. Unless the Idc is many amps, we can err on the safe (high) side and assume the ESR is zero, otherwise it adds in quadrature (root-sum of squares) to the capacitive reactance. But the sawtooth waveform contains the fundamental frequency a ...
... Equivalent Series Resistance (ESR) of the capacitor in series. Unless the Idc is many amps, we can err on the safe (high) side and assume the ESR is zero, otherwise it adds in quadrature (root-sum of squares) to the capacitive reactance. But the sawtooth waveform contains the fundamental frequency a ...
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.""