learning outcomes
... State what is meant by an optical fibre. State that optical fibres are used in some telecommunication systems. State that optical fibres transmit light signals. State that signal transmission along an optical fibre takes place at a speed of 200 million metres per second. Describe the transmission of ...
... State what is meant by an optical fibre. State that optical fibres are used in some telecommunication systems. State that optical fibres transmit light signals. State that signal transmission along an optical fibre takes place at a speed of 200 million metres per second. Describe the transmission of ...
fast pulser for high-altitude ignition research
... where μ0 is the permeability of free space, l is the average circumference of the core, and C0 is the capacitance per stage. In this equation, we assume that the load is a capacitor with a capacitance equal to the upstream capacitance; this gives an effective capacitance that is half that of a singl ...
... where μ0 is the permeability of free space, l is the average circumference of the core, and C0 is the capacitance per stage. In this equation, we assume that the load is a capacitor with a capacitance equal to the upstream capacitance; this gives an effective capacitance that is half that of a singl ...
EUP3412 1.5A/1.5MHz, Synchronous Step-Down Converter with Soft Start
... MOSFET) switches are internal. During normal operation, the EUP3412 regulates output voltage by switching at a constant frequency and then modulating the power transferred to the load each cycle using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of ...
... MOSFET) switches are internal. During normal operation, the EUP3412 regulates output voltage by switching at a constant frequency and then modulating the power transferred to the load each cycle using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of ...
Fault Current
... Issues with proposed 110.16 Too many ways to calculate Incident Energy from Fault Current. First Draft Language missing Arc Flash PPE Categories Most dangerous part of electrical system is line side of service disconnect and we are ignoring this. Most installers do not even use the label ...
... Issues with proposed 110.16 Too many ways to calculate Incident Energy from Fault Current. First Draft Language missing Arc Flash PPE Categories Most dangerous part of electrical system is line side of service disconnect and we are ignoring this. Most installers do not even use the label ...
TDA2050 - Hobbielektronika.hu
... - Set the voltage supply at the maximum operating value; - Apply a input signal in the form of a 1KHz tone burst of 1 sec duration: the repetition period of the signal pulses is 60 sec; - The output voltage is measured 1 sec from the start of the pulse; - Increase the input voltage until the output ...
... - Set the voltage supply at the maximum operating value; - Apply a input signal in the form of a 1KHz tone burst of 1 sec duration: the repetition period of the signal pulses is 60 sec; - The output voltage is measured 1 sec from the start of the pulse; - Increase the input voltage until the output ...
Ledex® Drive Electronics and Coil Suppressors
... between the contacts which is higher than the dielectric strength of air (which has a dielectric strength of approximately 40 volts/mil). If a spark plug is gapped at 0.025", a voltage of 25 x 40 = 1,000 volts would be necessary to create a dielectric breakdown (spark). How is more than 1,000 volts ...
... between the contacts which is higher than the dielectric strength of air (which has a dielectric strength of approximately 40 volts/mil). If a spark plug is gapped at 0.025", a voltage of 25 x 40 = 1,000 volts would be necessary to create a dielectric breakdown (spark). How is more than 1,000 volts ...
Review Question - Wellington High School
... A farad is a very large unit of capacitance. Calculate the length of one side of a square, air-filled capacitor that has a capacitance of 1 F and a plate separation of 1 m A pair of capacitors are connected in parallel while an identical pair are connected in series. Which pair would be more dan ...
... A farad is a very large unit of capacitance. Calculate the length of one side of a square, air-filled capacitor that has a capacitance of 1 F and a plate separation of 1 m A pair of capacitors are connected in parallel while an identical pair are connected in series. Which pair would be more dan ...
characteristics of passive circuit elements (r,l,c)
... Capacitors are classified according to the dielectric material used in their fabrication. The ranges of values available vary from type to type. Some of the commonly encountered types are: Electrolytic (above 1 F), Polyester (0.001-10 F), Paper (0.001-10 F), Mica (0.001-0.1 F) and Ceramic (less ...
... Capacitors are classified according to the dielectric material used in their fabrication. The ranges of values available vary from type to type. Some of the commonly encountered types are: Electrolytic (above 1 F), Polyester (0.001-10 F), Paper (0.001-10 F), Mica (0.001-0.1 F) and Ceramic (less ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676
... power diodes, push the switching frequency close to Mega Hz region. At this frequency range, lossless switching becomes challenging to maintain high efficiency [1]. Soft switched converters using power MOSFETs have been recognized as candidates for high density dc-dc power converter applications[2], ...
... power diodes, push the switching frequency close to Mega Hz region. At this frequency range, lossless switching becomes challenging to maintain high efficiency [1]. Soft switched converters using power MOSFETs have been recognized as candidates for high density dc-dc power converter applications[2], ...
EE_115AL_Experiment_7
... Set the frequency to 10kHz and increase the input voltage until the output voltage becomes distorted. Note the maximum. When the input is at 0.61 volts, the output is at 5.85 volts. Further increase of the input voltage distorts the output. Thus 5.85 volts is the max output swing. d) AC Voltage and ...
... Set the frequency to 10kHz and increase the input voltage until the output voltage becomes distorted. Note the maximum. When the input is at 0.61 volts, the output is at 5.85 volts. Further increase of the input voltage distorts the output. Thus 5.85 volts is the max output swing. d) AC Voltage and ...
EE 321 Exam 1
... (b) This is the form of a low-pass filter. To verify, note that at high frequencies, the capacitor acts as a short circuit, so vo = 0, and at low frequencies, the the capacitor acts as an open circuit, so vo = −βib (Ro ||RL ) = -270. (c) The break frequency is ωo in the above equation. Also, CL is i ...
... (b) This is the form of a low-pass filter. To verify, note that at high frequencies, the capacitor acts as a short circuit, so vo = 0, and at low frequencies, the the capacitor acts as an open circuit, so vo = −βib (Ro ||RL ) = -270. (c) The break frequency is ωo in the above equation. Also, CL is i ...
Manual - Quartzlock
... significant phase effects. (In comparison, ferrite rod aerials are very temperature sensitive and will contribute significantly to the phase noise in the system). The loop aerial and its associated active components are powered with DC via the BNC aerial connector, eliminating the need for a separat ...
... significant phase effects. (In comparison, ferrite rod aerials are very temperature sensitive and will contribute significantly to the phase noise in the system). The loop aerial and its associated active components are powered with DC via the BNC aerial connector, eliminating the need for a separat ...
Impedance and Ohm`s Law
... voltage and ac current for a resistor, capacitor, and inductor . Discuss the phase relationship between the ac voltage ...
... voltage and ac current for a resistor, capacitor, and inductor . Discuss the phase relationship between the ac voltage ...
Using Switchgear at Frequencies Other Than 60Hz
... Continuous Current: The ac resistant of a conductor, and thus the heat loss at a given current, increases with frequency. The ANSI standards require continuous current test to be made at a frequency no lower than the rated frequency. The standards actually allow the assigning of a higher continuous ...
... Continuous Current: The ac resistant of a conductor, and thus the heat loss at a given current, increases with frequency. The ANSI standards require continuous current test to be made at a frequency no lower than the rated frequency. The standards actually allow the assigning of a higher continuous ...
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.""