Modern Physics Laboratory
... voltage. This voltmeter reading should be between 3 and 4 volts. If it is not in that range, adjust the power supply voltage to bring the reading into that range. A4. Align the tube with the light from the mercury source. The system should be ready to record data. A5. Insert the 435.8 m(i.e. 435.8 ...
... voltage. This voltmeter reading should be between 3 and 4 volts. If it is not in that range, adjust the power supply voltage to bring the reading into that range. A4. Align the tube with the light from the mercury source. The system should be ready to record data. A5. Insert the 435.8 m(i.e. 435.8 ...
Measuring Temperature Using Thermistors
... Thermistors are widely used because of their sensitivity, small size, ruggedness and low cost. Thermistors have an electrical resistance that varies non-linearly with temperature. The R-T characteristics of most thermistors can be described by the Steinhart-Hart equation: 1/T = A + B*(Ln R) + C*(Ln ...
... Thermistors are widely used because of their sensitivity, small size, ruggedness and low cost. Thermistors have an electrical resistance that varies non-linearly with temperature. The R-T characteristics of most thermistors can be described by the Steinhart-Hart equation: 1/T = A + B*(Ln R) + C*(Ln ...
Lab-12 Stephan-Boltzmann Law
... 1) Connect a variable power supply in series to the terminals of a the small utility light bulb as in Figure 1. 2) Attach a digital multimeter meter (DVM) in parallel across the light bulb + and – terminals to measure the voltage drop V across the filament. 3) A second DVM is place in series with th ...
... 1) Connect a variable power supply in series to the terminals of a the small utility light bulb as in Figure 1. 2) Attach a digital multimeter meter (DVM) in parallel across the light bulb + and – terminals to measure the voltage drop V across the filament. 3) A second DVM is place in series with th ...
DM74LS09 Quad 2-Input AND Gates with Open
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support de ...
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support de ...
09 force measurement
... 1. What is the principle of a resistance based strain-gage? What is the definition of the deformation sensitivity coefficient k? 2. What are the advantages of using full-bridge circuit (with 4 active elements)? 3. Make a simple chart showing a flexible support in a bended position with a four active ...
... 1. What is the principle of a resistance based strain-gage? What is the definition of the deformation sensitivity coefficient k? 2. What are the advantages of using full-bridge circuit (with 4 active elements)? 3. Make a simple chart showing a flexible support in a bended position with a four active ...
How is current electricity different from static electricity
... 13. How much current runs through the wires of household circuits? 14. What safety devices are put in place in homes so the current in circuits are not overloaded and start fires? 15. A battery only makes current flow in one direction. What kind of current is this? 16. In the United States, our hous ...
... 13. How much current runs through the wires of household circuits? 14. What safety devices are put in place in homes so the current in circuits are not overloaded and start fires? 15. A battery only makes current flow in one direction. What kind of current is this? 16. In the United States, our hous ...
Experiment 15: Ohm`s Law
... Resistors are labeled with color-coded bands that indicate resistance and tolerance. The first two color bands give the first two digits of the value (Fig. 15.3). The third band gives the multiplier for the first two, in powers of 10. The last band is the tolerance (Fig. 15.3), meaning the true valu ...
... Resistors are labeled with color-coded bands that indicate resistance and tolerance. The first two color bands give the first two digits of the value (Fig. 15.3). The third band gives the multiplier for the first two, in powers of 10. The last band is the tolerance (Fig. 15.3), meaning the true valu ...
KPT 11 KD KPT 31 KD - Schleicher Electronic
... Different OFF and ON times can be selected in decimal increments on the relay front by means of selector switches. The OFF and ON time within a range is set using the selector wheel. The different supply voltages have to be connected to their respective assigned terminal. ...
... Different OFF and ON times can be selected in decimal increments on the relay front by means of selector switches. The OFF and ON time within a range is set using the selector wheel. The different supply voltages have to be connected to their respective assigned terminal. ...
UFC FlatPakTM SERIES 400 Hz GROUND POWER UNIT 20
... development of reliable, solid-state power systems. Through an innovative design, advanced self-diagnostic systems (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time. The FlatPakTM Series includes 400 Hz converters specifically designed for in ...
... development of reliable, solid-state power systems. Through an innovative design, advanced self-diagnostic systems (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time. The FlatPakTM Series includes 400 Hz converters specifically designed for in ...
Series and Parallel
... • Resistors – resists the flow of electrical current • Increased resistance will reduce the rate at which charge flows (aka current) • Total resistance goes UP with each resistor since the current has must go through each resistor. • Total Resistance = Sum of all resistors in the series Req = R1+R2+ ...
... • Resistors – resists the flow of electrical current • Increased resistance will reduce the rate at which charge flows (aka current) • Total resistance goes UP with each resistor since the current has must go through each resistor. • Total Resistance = Sum of all resistors in the series Req = R1+R2+ ...
MS Word - Sonoma State University
... (W/L) = 100 and nCOX = 0.25 mA/V2. Find the differential voltage gain Ad, the common-mode voltage gain |Acm| and the common-mode rejection ratio CMMR (defined as the ratio |Ad|/| Acm |) and express it in decibels (dB). [Note: For simplicity you may calculate the differential voltage gain Ad assumin ...
... (W/L) = 100 and nCOX = 0.25 mA/V2. Find the differential voltage gain Ad, the common-mode voltage gain |Acm| and the common-mode rejection ratio CMMR (defined as the ratio |Ad|/| Acm |) and express it in decibels (dB). [Note: For simplicity you may calculate the differential voltage gain Ad assumin ...
PoE Power Plus IEEE 802.3at Extended Classification Using Ping
... • If .atPSE sees 1-2, 1-3, etc, (none of which are 0), it knows PD is an .atPD. .afPSE with .atPD: • If .afPSE sees .atPD, it will use first class. Therefore, new 2W .atPD should use class 1-x, so that .afPSE allocates 4W. Similarly, new 11W .atPD should use 3-x so that .afPSE allocates 15.4W. Comme ...
... • If .atPSE sees 1-2, 1-3, etc, (none of which are 0), it knows PD is an .atPD. .afPSE with .atPD: • If .afPSE sees .atPD, it will use first class. Therefore, new 2W .atPD should use class 1-x, so that .afPSE allocates 4W. Similarly, new 11W .atPD should use 3-x so that .afPSE allocates 15.4W. Comme ...
PHY160-4
... all when the switch is “down”. This is because when the switch is “down”, the batteries are arranged such that the positive ends are both adjacent. Reversing the direction of either of the two batteries in E would result in a circuit in which the motor runs faster when the switch is “down” than when ...
... all when the switch is “down”. This is because when the switch is “down”, the batteries are arranged such that the positive ends are both adjacent. Reversing the direction of either of the two batteries in E would result in a circuit in which the motor runs faster when the switch is “down” than when ...
Alternating Current
... 1. An alternating current I is represented by the following equation: I = (2.0 A)sin(100t) Where time t is measured in second. Determine, a) The maximum current. b) The frequency of oscillation of the current. c) The current at time i) t = 2.5 ms ii) t = 12.5 ms Ans : a) 2.0 A ...
... 1. An alternating current I is represented by the following equation: I = (2.0 A)sin(100t) Where time t is measured in second. Determine, a) The maximum current. b) The frequency of oscillation of the current. c) The current at time i) t = 2.5 ms ii) t = 12.5 ms Ans : a) 2.0 A ...
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.