Assessment Task for Further Electronics
... Ben finds that there is an insufficient current in his toy for it to operate when he connects it across the output Voutput of the circuit shown in Figure 3. Monique suggest he use Toshiba 7815 IC voltage regulator whose output is 15 V provided the input voltage to the chip exceeds 15.5 V at all tim ...
... Ben finds that there is an insufficient current in his toy for it to operate when he connects it across the output Voutput of the circuit shown in Figure 3. Monique suggest he use Toshiba 7815 IC voltage regulator whose output is 15 V provided the input voltage to the chip exceeds 15.5 V at all tim ...
Class notes on capacitors
... Charging & Discharging a Capacitor If the circuit below is set up we can examine the charging and discharging characteristics of a capacitor when it is connected in series with a resistor across a 10 V D.C. supply. CHARGING The switch is initially open (down) at t = 0, so that the power supply is sh ...
... Charging & Discharging a Capacitor If the circuit below is set up we can examine the charging and discharging characteristics of a capacitor when it is connected in series with a resistor across a 10 V D.C. supply. CHARGING The switch is initially open (down) at t = 0, so that the power supply is sh ...
Electronic Ballasts - Lightline Electronics
... Square wave ballasts eliminate the flicker problem. They allow you to film at any frame rate, at changing frame rates and with a wild camera. A square wave ballast maintains a virtually constant output of light over the whole AC cycle by squaring off the curves of the AC sine wave (Figure 1 c). The ...
... Square wave ballasts eliminate the flicker problem. They allow you to film at any frame rate, at changing frame rates and with a wild camera. A square wave ballast maintains a virtually constant output of light over the whole AC cycle by squaring off the curves of the AC sine wave (Figure 1 c). The ...
RAPID CHARGER FOR HIGH REPETITION RATE PULSE GENERATOR
... generators often require operation at significant pulse repetition frequencies. For example, corona assisted pollution abatement [1,2,3], flame ignition for combustion enhancement [4] and for Pulse Detonation Engines (PDE) need pulse repetition rates from 1 to several kHz. Higher repetition rates pl ...
... generators often require operation at significant pulse repetition frequencies. For example, corona assisted pollution abatement [1,2,3], flame ignition for combustion enhancement [4] and for Pulse Detonation Engines (PDE) need pulse repetition rates from 1 to several kHz. Higher repetition rates pl ...
Theory
... 6) Now adjust the sweep speed on the oscilloscope (also the horizontal. magnification, if necessary) until only the first half of the trace shown in Figure 2 fills the screen. The horizontal adjustments, except for calibration, can be changed at will; however, do not change the vertical settings. 7 ...
... 6) Now adjust the sweep speed on the oscilloscope (also the horizontal. magnification, if necessary) until only the first half of the trace shown in Figure 2 fills the screen. The horizontal adjustments, except for calibration, can be changed at will; however, do not change the vertical settings. 7 ...
High voltage power supply (1 to 20 KV)
... transformers act as pure inductors during half a cycle, and then they act as a pure transformer in the other half. This behavior is made possible by an air gap in the ferrite core. This air gap increases the reluctance of the core, which thereby increases its ability to store magnetic energy. Flybac ...
... transformers act as pure inductors during half a cycle, and then they act as a pure transformer in the other half. This behavior is made possible by an air gap in the ferrite core. This air gap increases the reluctance of the core, which thereby increases its ability to store magnetic energy. Flybac ...
lm3909
... used indicating the front and back indicators. To turn left move the switch to left. This will turn on the front left LED (D1) and back left LED (D3). To turn right move the switch to right .This will turn on the front right LED (D2) and back right LED (D4). By using the timing capacitor for voltage ...
... used indicating the front and back indicators. To turn left move the switch to left. This will turn on the front left LED (D1) and back left LED (D3). To turn right move the switch to right .This will turn on the front right LED (D2) and back right LED (D4). By using the timing capacitor for voltage ...
The Series RLC Circuit: Group Worksheet Intro Part 1: Resistive
... Set up some other values for the components in the circuit and see how these values affect both the resonance frequencies, the phase shift, and the phasor diagrams. What situations would you design a circuit with a large capacitor? A small capacitor? A large inductor? A small inductor? ...
... Set up some other values for the components in the circuit and see how these values affect both the resonance frequencies, the phase shift, and the phasor diagrams. What situations would you design a circuit with a large capacitor? A small capacitor? A large inductor? A small inductor? ...
H2- PHYS102 - Honors Lab-2H-LRC_resonance
... In this experiment, the amplitude of the current through a series RLC circuit is measured as a function of frequency. The inductance L = 840 mH is provided by a large solenoidal coil of copper wire with an intrinsic electrical resistance Ro = 60-65 Ω. Connected in series with the coil is another res ...
... In this experiment, the amplitude of the current through a series RLC circuit is measured as a function of frequency. The inductance L = 840 mH is provided by a large solenoidal coil of copper wire with an intrinsic electrical resistance Ro = 60-65 Ω. Connected in series with the coil is another res ...
Ham Radio Glossary Alternating current (AC) -
... Ionizing radiation -- Electromagnetic radiation that has sufficient energy to knock electrons free from their atoms, producing positive and negative ions. X-rays, gamma rays and ultraviolet radiation are examples of ionizing radiation Ionosphere -- A region of electrically charged (ionized) gases hi ...
... Ionizing radiation -- Electromagnetic radiation that has sufficient energy to knock electrons free from their atoms, producing positive and negative ions. X-rays, gamma rays and ultraviolet radiation are examples of ionizing radiation Ionosphere -- A region of electrically charged (ionized) gases hi ...
Sometimes It`s as Simple as Using Ohm`s Law
... Rearranging the equation to solve for R2 results in R2 = 0.92 Ω. At this point, I purchased two 0.9 Ω rib-wound resistors for a total of $32. After inserting one of them into the circuit path, the problem was solved at an expense of less than 70W of heat loss due to the resistor. The second backup r ...
... Rearranging the equation to solve for R2 results in R2 = 0.92 Ω. At this point, I purchased two 0.9 Ω rib-wound resistors for a total of $32. After inserting one of them into the circuit path, the problem was solved at an expense of less than 70W of heat loss due to the resistor. The second backup r ...
LAB 2 Circuit Tools
... reading will be positive. If the meter were hooked up in the reverse manner, a negative reading would result. The voltmeter is therefore an excellent instrument not only for measuring the voltage level but also for determining the polarity. Since the meter is always placed in parallel with the eleme ...
... reading will be positive. If the meter were hooked up in the reverse manner, a negative reading would result. The voltmeter is therefore an excellent instrument not only for measuring the voltage level but also for determining the polarity. Since the meter is always placed in parallel with the eleme ...
1)______ types of Induction Motor are widely used. A. SlipringIM B
... 9) For a 3φ transmission line transmission efficiency of a line decreases with A. increase in load p.f. B. Does not vary with power factor C. increase in load current. D. decrease in load p.f. 10) Which combination is true for any transmission line A. A⃗ = 52, B⃗ = 0.8, C⃗ = 25, D⃗ = 0.385 B. . A⃗ = ...
... 9) For a 3φ transmission line transmission efficiency of a line decreases with A. increase in load p.f. B. Does not vary with power factor C. increase in load current. D. decrease in load p.f. 10) Which combination is true for any transmission line A. A⃗ = 52, B⃗ = 0.8, C⃗ = 25, D⃗ = 0.385 B. . A⃗ = ...
Electrical Engineering
... 87. In a 25-KVA 3300/230 V, single phase transformer the iron and full load copper losses are 350 W and 400 W respectively. The load at which the efficiency will be maximum is : (A) 25 KW (B) 21.875 KW (C) 25 KVA (D) 21.875 KVA 88. A 3-φ, 6 pole induction motor operates on 440 V, 50Cls supply. If th ...
... 87. In a 25-KVA 3300/230 V, single phase transformer the iron and full load copper losses are 350 W and 400 W respectively. The load at which the efficiency will be maximum is : (A) 25 KW (B) 21.875 KW (C) 25 KVA (D) 21.875 KVA 88. A 3-φ, 6 pole induction motor operates on 440 V, 50Cls supply. If th ...
Video Transcript - Rose
... This is a bandreject filter with a center frequency of 1 radian per second. We want to scale the circuit to make the center frequency shift to 100,000 radians per second. We assume that there is a one-nanofarad capacitor available for the new circuit. Let’s try to analyze the circuit in s domain. Th ...
... This is a bandreject filter with a center frequency of 1 radian per second. We want to scale the circuit to make the center frequency shift to 100,000 radians per second. We assume that there is a one-nanofarad capacitor available for the new circuit. Let’s try to analyze the circuit in s domain. Th ...
Capacitor Self
... softkey. Vectors On essentially "connects the dots", giving a better display of the trace for Channel 2. Notable is the large amplitude of the first current pulse, due to the filter capacitor being uncharged initially. The first current pulse must bring the capacitor up from 0 V to very near full vo ...
... softkey. Vectors On essentially "connects the dots", giving a better display of the trace for Channel 2. Notable is the large amplitude of the first current pulse, due to the filter capacitor being uncharged initially. The first current pulse must bring the capacitor up from 0 V to very near full vo ...
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.""