Exemplar Report P4 and P7 Electronics
... Firstly though, we need to calculate the gain of the system. When the output is given in decibels the actual gain needs to be converted. This can be done using the following equation. Gain(dB) = 20log (Vout/Vin) The gain for this system is 27.78 dB. Therefore the equation can be manipulated: (27.78) ...
... Firstly though, we need to calculate the gain of the system. When the output is given in decibels the actual gain needs to be converted. This can be done using the following equation. Gain(dB) = 20log (Vout/Vin) The gain for this system is 27.78 dB. Therefore the equation can be manipulated: (27.78) ...
V Series Rectifier 102407
... rectifier conditions as well as full control of output voltage and alarming set-points. SCL and SDA are common data signals and can be wired directly to a system controller or on a common shared bus between the rectifiers in a system and the main system controller. LOC0, LOC1, and LOC2 are location ...
... rectifier conditions as well as full control of output voltage and alarming set-points. SCL and SDA are common data signals and can be wired directly to a system controller or on a common shared bus between the rectifiers in a system and the main system controller. LOC0, LOC1, and LOC2 are location ...
Extend standard I2C-bus devices without worrying about offset
... The NXP P82B715 extends the reach of the I2C-bus. It increases the drive capability of the data (SDA) and the clock (SCL) lines to 30 mA, the same level as Fast-mode Plus (Fm+). Using one P82B715 at each end of a long cable (connecting Lx/Ly to Lx/Ly) reduces the cable’s loading capacitance on the I ...
... The NXP P82B715 extends the reach of the I2C-bus. It increases the drive capability of the data (SDA) and the clock (SCL) lines to 30 mA, the same level as Fast-mode Plus (Fm+). Using one P82B715 at each end of a long cable (connecting Lx/Ly to Lx/Ly) reduces the cable’s loading capacitance on the I ...
What do resistors do?
... • When a Forward voltage is applied to the SCR, – The SCR's cathode-to-anode voltage is designated as VF at this time. VF increases from zero, the SCR conducts only a small forward current (IF ) which is due to leakage. As VF continues to increase, IF remains very low and almost constant but eventua ...
... • When a Forward voltage is applied to the SCR, – The SCR's cathode-to-anode voltage is designated as VF at this time. VF increases from zero, the SCR conducts only a small forward current (IF ) which is due to leakage. As VF continues to increase, IF remains very low and almost constant but eventua ...
Chapter 28 Direct Current Circuits
... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
Parallel Wiring
... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
Wednesday, Mar. 8, 2006
... – What does this tell you about the charge on the capacitor? • It decreases exponentially w/ time and w/ time constant RC • Just like the case of charging What is this? – The current is: I dQ Q0 et RC I t I 0 e t RC dt RC • The current also decreases exponentially w/ time w/ constant R ...
... – What does this tell you about the charge on the capacitor? • It decreases exponentially w/ time and w/ time constant RC • Just like the case of charging What is this? – The current is: I dQ Q0 et RC I t I 0 e t RC dt RC • The current also decreases exponentially w/ time w/ constant R ...
RESiSTORS 101
... Reliability is the probability that a resistor (or any other device) will perform its desired function. There are two ways of defining reliability. One is Mean Time Between Failures (MTBF) and the other is Failure Rate per 1,000 hours of operation. Both of these means of evaluating reliability must ...
... Reliability is the probability that a resistor (or any other device) will perform its desired function. There are two ways of defining reliability. One is Mean Time Between Failures (MTBF) and the other is Failure Rate per 1,000 hours of operation. Both of these means of evaluating reliability must ...
DN451 - Current Sense Amp Inputs Work from –0.3V to 44V Independent of Supply
... and diagnosis, and raise efficiency. A current monitoring circuit usually involves placing a sense resistor in series with the monitored conductor and determining the voltage across the sense resistor. To minimize power loss in the sense resistor it is kept as small as possible, resulting in a small ...
... and diagnosis, and raise efficiency. A current monitoring circuit usually involves placing a sense resistor in series with the monitored conductor and determining the voltage across the sense resistor. To minimize power loss in the sense resistor it is kept as small as possible, resulting in a small ...
KSC329 6 NPN Epitaxial Silicon Transistor Absolute Maximum Ratings
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when ...
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when ...
a two stage isolated bidirectional dc/dc convertor for pv
... iLrp starts to flow through the body diode of M2, and the ON state of the body diode of M3 is maintained to provide the current path of iLrs. When M2 and M4 are turned on at t4, ZVS of M2 is accomplished, and iLrs flows through the channel ofM4 and Cr. After t5, iLrp changes its direction, flowing t ...
... iLrp starts to flow through the body diode of M2, and the ON state of the body diode of M3 is maintained to provide the current path of iLrs. When M2 and M4 are turned on at t4, ZVS of M2 is accomplished, and iLrs flows through the channel ofM4 and Cr. After t5, iLrp changes its direction, flowing t ...
CATV Power
... FR-1000 is not limited to single-frequency operation, but accepts a wide range of input frequencies and voltages. Consequently, generator compatibility is maximized. Bi-directional Power Sharing (BPS) allows continuous power flow from utility or the battery string to smoothly support load requiremen ...
... FR-1000 is not limited to single-frequency operation, but accepts a wide range of input frequencies and voltages. Consequently, generator compatibility is maximized. Bi-directional Power Sharing (BPS) allows continuous power flow from utility or the battery string to smoothly support load requiremen ...
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.