electric circuit - Universiti Teknologi Malaysia
... 4. Calculate the total resistance of the series connection. Show your calculation in the answer sheet. 5. Complete the series circuit by adding a 15 volt DC source. Connect the ammeter in series with the resistors to measure the current in the circuit 6. Draw the circuit (in step 5) in the answer sh ...
... 4. Calculate the total resistance of the series connection. Show your calculation in the answer sheet. 5. Complete the series circuit by adding a 15 volt DC source. Connect the ammeter in series with the resistors to measure the current in the circuit 6. Draw the circuit (in step 5) in the answer sh ...
Output Devices
... When the door is closed the magnet is close to the reed relay and switch S is open. When the door is opened, the magnet moves away from the relay, causing switch S to close setting off the alarm. ...
... When the door is closed the magnet is close to the reed relay and switch S is open. When the door is opened, the magnet moves away from the relay, causing switch S to close setting off the alarm. ...
EUP3408 1.5MHz, 800mA Synchronous Step-Down Converter with Soft Start
... the power transferred to the load each cycle using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of error amplifier, the main switch sense voltage and the slope-compensation ramp. It modulates output power by adjusting the inductor-peak current durin ...
... the power transferred to the load each cycle using PWM comparator. The duty cycle is controlled by three weighted differential signals: the output of error amplifier, the main switch sense voltage and the slope-compensation ramp. It modulates output power by adjusting the inductor-peak current durin ...
Lecture 1 - EECS: www
... Current flow results from the ability of electrons to break away from atoms and move around in a solid. In some materials such as metals, mobile electrons exist and can move around where an electric field exists to drive them– in such materials the resistance for current flow is low, and these are c ...
... Current flow results from the ability of electrons to break away from atoms and move around in a solid. In some materials such as metals, mobile electrons exist and can move around where an electric field exists to drive them– in such materials the resistance for current flow is low, and these are c ...
Lab 4 – Intro to Digital Logic and Transistors
... implement addition of binary numbers more than one-bit wide. But you’ll notice we’re missing one crucial piece: how do we account for the carried bit? The circuit we’ve implemented is called a half-adder because it cannot handle the carry-in bit, thus making it impossible to cascade into a useful mu ...
... implement addition of binary numbers more than one-bit wide. But you’ll notice we’re missing one crucial piece: how do we account for the carried bit? The circuit we’ve implemented is called a half-adder because it cannot handle the carry-in bit, thus making it impossible to cascade into a useful mu ...
Low-Voltage Current Sink Controls High-Voltage
... charge-pump driver with automatic phototransistor control— changes current density according to ambient light conditions, eliminating the need for a processor and allowing significant power savings in mobile displays. As many as six LEDs can be independently driven at up to 30 mA; a seventh LED can ...
... charge-pump driver with automatic phototransistor control— changes current density according to ambient light conditions, eliminating the need for a processor and allowing significant power savings in mobile displays. As many as six LEDs can be independently driven at up to 30 mA; a seventh LED can ...
My Book of Electricity and Magnetism
... An electromagnet is a temporary magnet made by wrapping a current-carrying wire around an iron core. The center of an electromagnet is called the core, and it is often made of iron. As long as current is flowing, an electromagnet has a magnetic field. When current is turned off, there is no ...
... An electromagnet is a temporary magnet made by wrapping a current-carrying wire around an iron core. The center of an electromagnet is called the core, and it is often made of iron. As long as current is flowing, an electromagnet has a magnetic field. When current is turned off, there is no ...
Circuit Theory
... yellow, orange, and blue, the schematic symbol is the same for all colors. Since LED’s have clear cases, there is normally no label on the case to identify the leads. The leads are normally in one of three ways (1) The leads may have different lengths. (2) One of the leads may be flattened. The fl ...
... yellow, orange, and blue, the schematic symbol is the same for all colors. Since LED’s have clear cases, there is normally no label on the case to identify the leads. The leads are normally in one of three ways (1) The leads may have different lengths. (2) One of the leads may be flattened. The fl ...
Transistor Amplifier – Voltage Gain
... exceeded by the density of the holes in the valence band; whereas, for an Ntype, the density of the holes in the valence band exceeded the density of the electrons in the conduction band. ...
... exceeded by the density of the holes in the valence band; whereas, for an Ntype, the density of the holes in the valence band exceeded the density of the electrons in the conduction band. ...
Practice exam with answers
... (a) What is the current in the resistor R1 just after the switch is closed? (b) After leaving the switch closed for a very long time, it is opened again. Just after it is opened, what is the current in R1? Show work. After the switch is closed, all current goes through resistor R1. I=25V/12Ω=2.08A. ...
... (a) What is the current in the resistor R1 just after the switch is closed? (b) After leaving the switch closed for a very long time, it is opened again. Just after it is opened, what is the current in R1? Show work. After the switch is closed, all current goes through resistor R1. I=25V/12Ω=2.08A. ...
Class XII Physics 50 short questions
... 10. State Kirchhoff’s voltage and current law. 11. . A ray of light while traveling from a denser to a rarer medium undergoes total reflection.Derive the expression for the critical angle in terms of the speed of light in the respective media. 12. Why is the focal length of an objective in compound ...
... 10. State Kirchhoff’s voltage and current law. 11. . A ray of light while traveling from a denser to a rarer medium undergoes total reflection.Derive the expression for the critical angle in terms of the speed of light in the respective media. 12. Why is the focal length of an objective in compound ...
File
... speeds just due to their temperature. When a potential difference is applied, the electrons also acquire an average drift velocity, which is generally considerably smaller than the thermal velocity. ...
... speeds just due to their temperature. When a potential difference is applied, the electrons also acquire an average drift velocity, which is generally considerably smaller than the thermal velocity. ...
Chapter 17 Alternating Currents
... (ii) When this voltage is applied across L and C2 in series. L offers a much greater impedance to the a.c. component than C2. Hence most of the unwanted a.c. ripples appear across L. (iii) For the d.c. component, C2 has infinite resistance, and the whole of this component is developed across C2 exce ...
... (ii) When this voltage is applied across L and C2 in series. L offers a much greater impedance to the a.c. component than C2. Hence most of the unwanted a.c. ripples appear across L. (iii) For the d.c. component, C2 has infinite resistance, and the whole of this component is developed across C2 exce ...
KSD201 2 NPN Epitaxial Silicon Transistor Absolute Maximum Ratings
... This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. ...
... This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. ...
Resistors in Series and Parallel Circuits
... Calculate the total resistance through this segment of a circuit. 1/Rt = 1/12 Ω +1/4 Ω + 1/6 Ω ...
... Calculate the total resistance through this segment of a circuit. 1/Rt = 1/12 Ω +1/4 Ω + 1/6 Ω ...
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.