Resistance
... Ohm's law is not perfect and can only be applied for certain temperature ranges A conductor is called ohmic or linear if the resistivity in a certain temperature range does not depend on the value of the electric field ...
... Ohm's law is not perfect and can only be applied for certain temperature ranges A conductor is called ohmic or linear if the resistivity in a certain temperature range does not depend on the value of the electric field ...
Physics 30 Circuits
... - Made of a solid piece of semiconductor material with three terminals: an emmiter, a base, and a collector. This is known is a bipolar junction transistor. • Can control it's output in proportion to the input signal (amplifier) • Can also be used to turn current on or off in a circuit (electrically ...
... - Made of a solid piece of semiconductor material with three terminals: an emmiter, a base, and a collector. This is known is a bipolar junction transistor. • Can control it's output in proportion to the input signal (amplifier) • Can also be used to turn current on or off in a circuit (electrically ...
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... THEORY:-Thermocouple transducer is widely used in industrial applications for temperature measurement. Thermocouples active transducer because there is no need of voltage source and transducer bridge circuitry. The working principle of the thermocouple is explained below: When two dissimilar metals ...
... THEORY:-Thermocouple transducer is widely used in industrial applications for temperature measurement. Thermocouples active transducer because there is no need of voltage source and transducer bridge circuitry. The working principle of the thermocouple is explained below: When two dissimilar metals ...
LM34 Precision Fahrenheit Temperature Sensors
... +32˚F ≤ Tj ≤ + 212˚F for the LM34D. VS = +5 Vdc and ILOAD = 50 µA in the circuit of Figure 2; +6 Vdc for LM34 and LM34A for 230˚F ≤ Tj ≤ 300˚F. These specifications also apply from +5˚F to TMAX in the circuit of Figure 1. Note 3: Thermal resistance of the TO-46 package is 720˚F/W junction to ambient ...
... +32˚F ≤ Tj ≤ + 212˚F for the LM34D. VS = +5 Vdc and ILOAD = 50 µA in the circuit of Figure 2; +6 Vdc for LM34 and LM34A for 230˚F ≤ Tj ≤ 300˚F. These specifications also apply from +5˚F to TMAX in the circuit of Figure 1. Note 3: Thermal resistance of the TO-46 package is 720˚F/W junction to ambient ...
ZLNB2016
... The inputs Vpol1 and Vpol2 are designed to be wired to the power inputs of the LNB via ESD protection resistors (20k). These inputs control the HOR1/2, BHOR1/2 and ENA1/2 logic outputs. The HOR outputs will be low when their corresponding Vpol input is at or below 14V and high when Vpol is at or abo ...
... The inputs Vpol1 and Vpol2 are designed to be wired to the power inputs of the LNB via ESD protection resistors (20k). These inputs control the HOR1/2, BHOR1/2 and ENA1/2 logic outputs. The HOR outputs will be low when their corresponding Vpol input is at or below 14V and high when Vpol is at or abo ...
AN9800: Total Power Conversion Solutions for Computer
... OFF and ON resets the protection circuitry. The linear regulator outputs employ a different method of over-current detection. Given the relatively large rDS(ON) of the pass devices, a short-circuit condition usually translates into a dip in the output voltage. If the output voltage (as sensed at the ...
... OFF and ON resets the protection circuitry. The linear regulator outputs employ a different method of over-current detection. Given the relatively large rDS(ON) of the pass devices, a short-circuit condition usually translates into a dip in the output voltage. If the output voltage (as sensed at the ...
IEEE Jackson PES Meeting
... To verify that the sound generated by the transformer does not exceed the guaranteed maximum decibel level during operation. To verify that the transformer had no combustible gas generation during various types of tests To verify that all current transformers are connected and polarity is correct To ...
... To verify that the sound generated by the transformer does not exceed the guaranteed maximum decibel level during operation. To verify that the transformer had no combustible gas generation during various types of tests To verify that all current transformers are connected and polarity is correct To ...
BC640 PNP Epitaxial Silicon Transistor
... EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. 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, and (c) whose failure to perform when properly used in accordance with ...
... EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. 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, and (c) whose failure to perform when properly used in accordance with ...
The Tube CAD Journal, August 1999
... stages tie together at a power supply connection with relatively high series output impedance. So when the 12AX7 tries to pull its plate voltage down, the 12AU7's cathode will follow, but as the 15k resistor is ten times smaller in value than the 150k resistor, the change in current it produces in r ...
... stages tie together at a power supply connection with relatively high series output impedance. So when the 12AX7 tries to pull its plate voltage down, the 12AU7's cathode will follow, but as the 15k resistor is ten times smaller in value than the 150k resistor, the change in current it produces in r ...
NBB-300 CASCADABLE BROADBAND GaAs MMIC AMPLIFIER DC TO 12GHz Features
... Carrier tape basic dimensions are based on EIA 481. The pocket is designed to hold the part for shipping and loading onto SMT manufacturing equipment, while protecting the body and the solder terminals from damaging stresses. The individual pocket design can vary from vendor to vendor, but width and ...
... Carrier tape basic dimensions are based on EIA 481. The pocket is designed to hold the part for shipping and loading onto SMT manufacturing equipment, while protecting the body and the solder terminals from damaging stresses. The individual pocket design can vary from vendor to vendor, but width and ...
AP7335 300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR
... without limit. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires m ...
... without limit. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires m ...
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.