Kirchhoff`s laws and drift velocity File
... The German physicist Gustav Kirchhoff established two laws which help us to understand the function of electric circuits. Kirchhoff’s first law states that: The sum of the currents leaving any junction is always equal to the sum of the currents that entered it. ...
... The German physicist Gustav Kirchhoff established two laws which help us to understand the function of electric circuits. Kirchhoff’s first law states that: The sum of the currents leaving any junction is always equal to the sum of the currents that entered it. ...
EUP3408 1.5MHz, 800mA Synchronous Step-Down Converter with Soft Start
... The EUP3408 is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.5V to 5.5V input voltage range makes the EUP3408 ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) ...
... The EUP3408 is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.5V to 5.5V input voltage range makes the EUP3408 ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) ...
High Efficiency, 4A Output, Synchronous Step Down
... of loads with an accurate ±1% Voltage Reference (VREF) over temperature. Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2µA by entering a shutdown mode. ...
... of loads with an accurate ±1% Voltage Reference (VREF) over temperature. Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2µA by entering a shutdown mode. ...
experiment 2 - Portal UniMAP
... Ohm’s law defines that voltage is proportional to the current and vice versa. The circuit current is inversely proportional to the resistance R. Both current and voltage have a linear relationship with resistance remain constant. The three forms of Ohm’s Law are, V IR , I ...
... Ohm’s law defines that voltage is proportional to the current and vice versa. The circuit current is inversely proportional to the resistance R. Both current and voltage have a linear relationship with resistance remain constant. The three forms of Ohm’s Law are, V IR , I ...
1700_current_2012Aug06
... cross section area of 1 mm2. The unit system has been changed slightly since that time, such that the column of mercury would only be 0.96 ohms. ...
... cross section area of 1 mm2. The unit system has been changed slightly since that time, such that the column of mercury would only be 0.96 ohms. ...
Ohm*s Law and Electrical Power
... Ohm’s Law • “Provided the physical conditions, such as temperature, are kept constant, the resistance is constant over a wide range of applied potential differences, and therefore the potential difference [across the resistor] is directly proportional to the current flowing [through the resistor].” ...
... Ohm’s Law • “Provided the physical conditions, such as temperature, are kept constant, the resistance is constant over a wide range of applied potential differences, and therefore the potential difference [across the resistor] is directly proportional to the current flowing [through the resistor].” ...
A LED Exercise
... You will have found this difficult to answer unless you realised that it is closely related to the last question – if you didn’t, look at the two situations again and see if you can find the answer to this one before you read on. Hopefully you saw that the answer to this question is still 40 mA beca ...
... You will have found this difficult to answer unless you realised that it is closely related to the last question – if you didn’t, look at the two situations again and see if you can find the answer to this one before you read on. Hopefully you saw that the answer to this question is still 40 mA beca ...
... designed for high-end loudspeaker and amplifier applications. These resistors utilize high quality resistance wire wound on a ceramic core, terminated, and finished with our flameproof Centohm® coating. Ohmite’s Audio Gold resistors have been carefully engineered with non-magnetic materials to elimi ...
Lab #10 Transducers - Northern Arizona University
... pH, light intensity, strain, and many others. The change in electrical characteristics can be used as a measure of the physical condition that caused it; this electrical signal can then be processed, recorded, digitized and displayed. 2. The thermistor is a semiconductor device that changes its resi ...
... pH, light intensity, strain, and many others. The change in electrical characteristics can be used as a measure of the physical condition that caused it; this electrical signal can then be processed, recorded, digitized and displayed. 2. The thermistor is a semiconductor device that changes its resi ...
HANDOUK SG RELAY Features Input: DC control Double SCR AC
... 240VAC, 380VAC, 480VAC versions. Input Voltage specifications have 3 to 15VDC, 15 to 32VDC and 3 to 32VDC. ...
... 240VAC, 380VAC, 480VAC versions. Input Voltage specifications have 3 to 15VDC, 15 to 32VDC and 3 to 32VDC. ...
SG RELAY Features Input: DC control Double SCR AC output or
... 240VAC, 380VAC, 480VAC versions. Input Voltage specifications have 3 to 15VDC, 15 to 32VDC and 3 to 32VDC. ...
... 240VAC, 380VAC, 480VAC versions. Input Voltage specifications have 3 to 15VDC, 15 to 32VDC and 3 to 32VDC. ...
LM7905/LM7912/LM7915 Series 3-Terminal Negative Regulators
... Low ground pin current of the LM79XX series allows output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current drain of ...
... Low ground pin current of the LM79XX series allows output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current drain of ...
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.