CIRCUITS LABORATORY EXPERIMENT 3 AC Circuit Analysis
... blocks dc voltages. At very high frequencies, the capacitor's impedance approaches ...
... blocks dc voltages. At very high frequencies, the capacitor's impedance approaches ...
Experiment FT2: Measurement of Inductance and Mutual Inductance
... Imagine a coil of wire, similar to the one shown in Figure 1, connected to an ac supply. It is found that whenever an effort is made to increase current through it, it is always opposed by the instantaneous production of counter e.m.f of self-induction. Energy required to overcome this opposition is ...
... Imagine a coil of wire, similar to the one shown in Figure 1, connected to an ac supply. It is found that whenever an effort is made to increase current through it, it is always opposed by the instantaneous production of counter e.m.f of self-induction. Energy required to overcome this opposition is ...
MEASUREMENTS of RF Voltage
... picofarad, whose frequency response is to be determined, or a thermal transfer standard having an impedance of 200 ohm/volt. In these circumstances of higher frequencies and instruments that are not matched to the coaxial transmission line system, impedance transformations are necessary if it is req ...
... picofarad, whose frequency response is to be determined, or a thermal transfer standard having an impedance of 200 ohm/volt. In these circumstances of higher frequencies and instruments that are not matched to the coaxial transmission line system, impedance transformations are necessary if it is req ...
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... The ALC650 has a 20-bit stereo DAC and 18-bit stereo ADC, full duplex AC'97 2.2 compatible audio CODEC designed for PC multimedia systems, including host/soft audio and AMR/CNR based designs. The ALC650 incorporates proprietary converter technology to achieve a high SNR, greater than 90 dB. The ALC6 ...
... The ALC650 has a 20-bit stereo DAC and 18-bit stereo ADC, full duplex AC'97 2.2 compatible audio CODEC designed for PC multimedia systems, including host/soft audio and AMR/CNR based designs. The ALC650 incorporates proprietary converter technology to achieve a high SNR, greater than 90 dB. The ALC6 ...
Electrical
... A small electric torch is powered by a single cell which supplies 1.6 J of energy per coulomb of charge passing through the cell. When the torch is switched on, the cell supplies a constant current of 0.50 A to the bulb X. The potential difference across the bulb is 1.2 V. (a) What is meant by “1.6 ...
... A small electric torch is powered by a single cell which supplies 1.6 J of energy per coulomb of charge passing through the cell. When the torch is switched on, the cell supplies a constant current of 0.50 A to the bulb X. The potential difference across the bulb is 1.2 V. (a) What is meant by “1.6 ...
Trigonometry Notes on the Applications of Sine and Cosine Functions.
... root-mean-square”. This is a type of average voltage. The actual maximum voltage is actually 2 times this. Therefore, ...
... root-mean-square”. This is a type of average voltage. The actual maximum voltage is actually 2 times this. Therefore, ...
Circuit analysis - Foundation Coalition
... regardless of current flowing in these terminals An ideal current source is a circuit element that maintains a prescribed current across its terminals regardless of voltage across the terminals ...
... regardless of current flowing in these terminals An ideal current source is a circuit element that maintains a prescribed current across its terminals regardless of voltage across the terminals ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... Basically, any change to the potentiometer will have an effect to the voltage drop of the LDR, as they are both members of the voltage divider described above. The 1N4001 diode is used to eliminate any back voltage when the relay is disarmed. It is very important to have this diode because without i ...
... Basically, any change to the potentiometer will have an effect to the voltage drop of the LDR, as they are both members of the voltage divider described above. The 1N4001 diode is used to eliminate any back voltage when the relay is disarmed. It is very important to have this diode because without i ...
A Low Noise Amplifier for Phase Noise Measurements
... The phase noise of low noise oscillators and signal sources is usually determined by measuring the audio noise voltage at the output of the phase comparator in a phase-locked loop. The phase comparator is typically a low noise doubly-balanced mixer with a phase slope from a few tenths of a volt per ...
... The phase noise of low noise oscillators and signal sources is usually determined by measuring the audio noise voltage at the output of the phase comparator in a phase-locked loop. The phase comparator is typically a low noise doubly-balanced mixer with a phase slope from a few tenths of a volt per ...
10% THD Electronic TT5 Fluorescent Ballast
... output or lamp life. The added energy savings also provides for a quicker payback. SYSTEM DL40 is available in a two lamp and a three lamp model. Both are Universal Voltage (120-277V) models. SYSTEM DL40 provides over 30% more lumen output than 34T12 systems at nearly the same power input. Also, the ...
... output or lamp life. The added energy savings also provides for a quicker payback. SYSTEM DL40 is available in a two lamp and a three lamp model. Both are Universal Voltage (120-277V) models. SYSTEM DL40 provides over 30% more lumen output than 34T12 systems at nearly the same power input. Also, the ...
AAT1164/AAT1164B/AAT1164C
... TFT LCD display. The PWM controller consists of an on-chip voltage reference, oscillator, error amplifier, current sense circuit, comparator, ...
... TFT LCD display. The PWM controller consists of an on-chip voltage reference, oscillator, error amplifier, current sense circuit, comparator, ...
an enhanced voltage sag compensation scheme for dynamic
... voltage while improving the overall sag compensation time. An analytical study shows that the proposed method significantly increases the DVR sag support time (more than 50%) compared with the existing phase jump compensation methods. This enhancement can also be seen as a considerable reduction in ...
... voltage while improving the overall sag compensation time. An analytical study shows that the proposed method significantly increases the DVR sag support time (more than 50%) compared with the existing phase jump compensation methods. This enhancement can also be seen as a considerable reduction in ...
ICL8038
... The frequency of the waveform generator is a direct function of the DC voltage at Terminal 8 (measured from V+). By altering this voltage, frequency modulation is performed. For small deviations (e.g. ±10%) the modulating signal can be applied directly to pin 8, merely providing DC decoupling with a ...
... The frequency of the waveform generator is a direct function of the DC voltage at Terminal 8 (measured from V+). By altering this voltage, frequency modulation is performed. For small deviations (e.g. ±10%) the modulating signal can be applied directly to pin 8, merely providing DC decoupling with a ...
File
... An electric iron is rated at 2100W and is designed to be operated in the UK using mains voltage. Calculate the current drawn by the iron. Suggest which size of fuse should be used in the plug. ...
... An electric iron is rated at 2100W and is designed to be operated in the UK using mains voltage. Calculate the current drawn by the iron. Suggest which size of fuse should be used in the plug. ...
LT1880 - SOT-23, Rail-to-Rail Output, Picoamp Input Current Precision Op Amp
... accuracy to be maintained with high impedance sources and feedback networks. The LT1880’s low input bias currents are obtained by using a cancellation circuit on-chip. This causes the resulting IBIAS+ and IBIAS– to be uncorrelated, as implied by the lOS specification being comparable to IBIAS. The us ...
... accuracy to be maintained with high impedance sources and feedback networks. The LT1880’s low input bias currents are obtained by using a cancellation circuit on-chip. This causes the resulting IBIAS+ and IBIAS– to be uncorrelated, as implied by the lOS specification being comparable to IBIAS. The us ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.