resistance
... The direction of current is the direction in which positive charges flow, even the flow is often of electrons (negative) High V ...
... The direction of current is the direction in which positive charges flow, even the flow is often of electrons (negative) High V ...
Higher EE teacher notes (8.4MB Word)
... b) As the light level decreases the resistance of the LDR increases. Calculate the reading on the voltmeter when the resistance of the LDR is 1600Ω. ...
... b) As the light level decreases the resistance of the LDR increases. Calculate the reading on the voltmeter when the resistance of the LDR is 1600Ω. ...
Peak Current Mode and Continuous Current Mode
... He(s). Compensator Av(s) is designed to enlarge the crossover frequency, ensure a −20 dB slope near the crossover point, and to get more than a 45° phase margin. The compensator has two poles and one zero; one pole is used to compensate the open-loop gain capacitor ESR zero, the other pole functions ...
... He(s). Compensator Av(s) is designed to enlarge the crossover frequency, ensure a −20 dB slope near the crossover point, and to get more than a 45° phase margin. The compensator has two poles and one zero; one pole is used to compensate the open-loop gain capacitor ESR zero, the other pole functions ...
Application Note 4116 A Fairchild Power Switch (FPS) based on 1. Introduction
... Switch to stop its operation if the load draws a higher current then the predetermined maximum value. A problem associated with this type of protection circuit is that it can trigger erroneously on load transients. As a security measure, the Fairchild Power Switch triggers the protection circuit aft ...
... Switch to stop its operation if the load draws a higher current then the predetermined maximum value. A problem associated with this type of protection circuit is that it can trigger erroneously on load transients. As a security measure, the Fairchild Power Switch triggers the protection circuit aft ...
7. AC Current & Voltage
... A moving –coil ammeter, a thermal ammeter and a rectifier are connected in series with a resistor across a 110V sinusoidal a.c. supply. The circuit has a resistance of 50 W to current in one direction and , due to the rectifier, an infinity resistance to current in the reverse direction . Calculate ...
... A moving –coil ammeter, a thermal ammeter and a rectifier are connected in series with a resistor across a 110V sinusoidal a.c. supply. The circuit has a resistance of 50 W to current in one direction and , due to the rectifier, an infinity resistance to current in the reverse direction . Calculate ...
Bipolar Transistor Epilayer Design Using the MAIDS Mixed-Level Simulator
... previous solution as a starting guess. This approach is very robust for small voltage steps; when the voltage steps become too large, intermediate voltage steps are used. The circuit simulator will on occasion supply the device simulator-based element excessive voltage values during the Kirchoff cur ...
... previous solution as a starting guess. This approach is very robust for small voltage steps; when the voltage steps become too large, intermediate voltage steps are used. The circuit simulator will on occasion supply the device simulator-based element excessive voltage values during the Kirchoff cur ...
Lab 5 - Portal UniMAP
... oscilloscope using dual-trace comparison with the calibrated time base. Despite of giving better accuracy compared to the Lissajous pattern method, it also can compare two signals of different amplitudes and different shapes. The procedure essentially consists of displaying both traces on the screen ...
... oscilloscope using dual-trace comparison with the calibrated time base. Despite of giving better accuracy compared to the Lissajous pattern method, it also can compare two signals of different amplitudes and different shapes. The procedure essentially consists of displaying both traces on the screen ...
ACS712: Fully Integrated, Hall Effect
... The Allegro™ ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switchmode p ...
... The Allegro™ ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switchmode p ...
Logic gate circuits
... A multiplexer (or MUX) is a circuit with many inputs but only one output and acts like a very fast acting rotary switch. It selects one of many analog or digital input signals (2, 4, 8, 16 and so on) and forwards the selected input into a single line output. The selection of a particular input chann ...
... A multiplexer (or MUX) is a circuit with many inputs but only one output and acts like a very fast acting rotary switch. It selects one of many analog or digital input signals (2, 4, 8, 16 and so on) and forwards the selected input into a single line output. The selection of a particular input chann ...
lesson2-student-answers 2524KB Apr 09 2015 10:22:51 AM
... AMMETERS ACT JUST LIKE WIRES AND ALLOW CURRENT TO FLOW THROUGH VERY EASILY. THIS CAUSES A “SHORT CIRCUIT” AROUND THE SECOND BULB. AMMETERS HAVE VERY ...
... AMMETERS ACT JUST LIKE WIRES AND ALLOW CURRENT TO FLOW THROUGH VERY EASILY. THIS CAUSES A “SHORT CIRCUIT” AROUND THE SECOND BULB. AMMETERS HAVE VERY ...
capacitor
... • Where is the permittivity of the dielectric material between the plates, A is the surface area of each plate, d is the distance between the plates. F (10–6) • Unit: F, pF (10–12), nF (10–9), and ...
... • Where is the permittivity of the dielectric material between the plates, A is the surface area of each plate, d is the distance between the plates. F (10–6) • Unit: F, pF (10–12), nF (10–9), and ...
Low-cost universal Motor Drive using Kinetis L MCUs
... current IGT. The MAC4DC needs at least 25 mA typically in case of negative IGT. For an operational mode with positive IGT, the gate trigger current is much higher. Our choice is to use a negative IGT. Three pins, PTC 1,2,3 , are connected together and are powerful enough to cover the amount of curre ...
... current IGT. The MAC4DC needs at least 25 mA typically in case of negative IGT. For an operational mode with positive IGT, the gate trigger current is much higher. Our choice is to use a negative IGT. Three pins, PTC 1,2,3 , are connected together and are powerful enough to cover the amount of curre ...
MAX8727 TFT-LCD Step-Up DC-DC Converter General Description Features
... Soft-Start Control Pin. Connect a soft-start capacitor (CSS) to this pin. Leave open for no soft-start. The softstart capacitor is charged with a constant current of 4.5µA. Full current limit is reached after t = 2.5 × 105 CSS. The soft-start capacitor is discharged to ground when SHDN is low. When ...
... Soft-Start Control Pin. Connect a soft-start capacitor (CSS) to this pin. Leave open for no soft-start. The softstart capacitor is charged with a constant current of 4.5µA. Full current limit is reached after t = 2.5 × 105 CSS. The soft-start capacitor is discharged to ground when SHDN is low. When ...
Integrated Wireless Power Li-Ion Charger Receiver, Qi (WPC
... Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absol ...
... Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absol ...
4.5V 至18V 输入、5.5A 同步降压转换器(Rev. A)
... The main control loop of the TPS54525 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
... The main control loop of the TPS54525 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
ADR510 数据手册DataSheet 下载
... Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without no ...
... Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without no ...
Development of Differential Amplifier Based the Second Generation Current Conveyors Wanlop Surakampontorn
... signal current iX is small. Fig. 5(d) shows the CCII using two diff-amp stages was proposed by Ismail and Soliman, where the feedback path is similar to the circuit of Fig. 5(b) [39]. Fig. 5(e) shows a high precision CCII that proposed by Yodprasit [40], where two feedback paths to port X, through M5 ...
... signal current iX is small. Fig. 5(d) shows the CCII using two diff-amp stages was proposed by Ismail and Soliman, where the feedback path is similar to the circuit of Fig. 5(b) [39]. Fig. 5(e) shows a high precision CCII that proposed by Yodprasit [40], where two feedback paths to port X, through M5 ...
TRIAC
TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.TRIACs are a subset of thyristors and are closely related to silicon controlled rectifiers (SCR). However, unlike SCRs, which are unidirectional devices (that is, they can conduct current only in one direction), TRIACs are bidirectional and so allow current in either direction. Another difference from SCRs is that TRIAC current can be enabled by either a positive or negative current applied to its gate electrode, whereas SCRs can be triggered only by positive current into the gate. To create a triggering current, a positive or negative voltage has to be applied to the gate with respect to the MT1 terminal (otherwise known as A1).Once triggered, the device continues to conduct until the current drops below a certain threshold called the holding current.The bidirectionality makes TRIACs very convenient switches for alternating-current (AC) circuits, also allowing them to control very large power flows with milliampere-scale gate currents. In addition, applying a trigger pulse at a controlled phase angle in an AC cycle allows control of the percentage of current that flows through the TRIAC to the load (phase control), which is commonly used, for example, in controlling the speed of low-power induction motors, in dimming lamps, and in controlling AC heating resistors.