Why it`s smart to buy Energy Star
... bulbs. The screw in CFLs can be used in conventional lamp sockets. CFLs fit most lighting fixtures and come in a variety of shapes and sizes. Although CFLs have a higher initial cost, the cost to use them is lower than an incandescent bulb. Maintenance requirements are significantly fewer for CFLs b ...
... bulbs. The screw in CFLs can be used in conventional lamp sockets. CFLs fit most lighting fixtures and come in a variety of shapes and sizes. Although CFLs have a higher initial cost, the cost to use them is lower than an incandescent bulb. Maintenance requirements are significantly fewer for CFLs b ...
Low Voltage Boost Driver PR4404
... With two LEDs in series, a stable output current of 200mA, or an output power of 1.2W, can be achieved in the voltage range between 3.5V and 5V, which is interesting for three battery cell applications. Operation with a 2.2µH yields optimum results with best margins. High input currents that occur a ...
... With two LEDs in series, a stable output current of 200mA, or an output power of 1.2W, can be achieved in the voltage range between 3.5V and 5V, which is interesting for three battery cell applications. Operation with a 2.2µH yields optimum results with best margins. High input currents that occur a ...
Anna University (Syllabus) V Semester (EEE) LINEAR
... sine wave with which op-amp can have undistorted output. 20. Define input resistance. Input resistance is defined as the difference input resistance as seen at either of the input terminals with the other terminal connected to ground. For 741 IC, the input resistance value is 2MΩ. 21. Define input c ...
... sine wave with which op-amp can have undistorted output. 20. Define input resistance. Input resistance is defined as the difference input resistance as seen at either of the input terminals with the other terminal connected to ground. For 741 IC, the input resistance value is 2MΩ. 21. Define input c ...
Chapter 18: Electric Current and Circuits
... resistors is the same. It is not “used up” as it flows around the circuit! These resistors are in series. Apply Kirchhoff’s loop rule: ε − IR1 − IR2 = 0 ...
... resistors is the same. It is not “used up” as it flows around the circuit! These resistors are in series. Apply Kirchhoff’s loop rule: ε − IR1 − IR2 = 0 ...
1 - dept.aoe.vt.edu
... regulate the battery charging properly. Once this signal has been activated the coulomb counter takes over from the analog circuitry. The signal is released when the counter indicates full charge. If for some reason the analog control system suffered only a temporary glitch (i.e. a bit error in the ...
... regulate the battery charging properly. Once this signal has been activated the coulomb counter takes over from the analog circuitry. The signal is released when the counter indicates full charge. If for some reason the analog control system suffered only a temporary glitch (i.e. a bit error in the ...
Chapter 11: Capacitive Transients, Pulse and
... switch is closed, the current jumps to E/R, then decays to zero. • At the instant of switching, the circuit looks like a short circuit. • The voltage across the capacitor begins at zero and gradually climbs to E volts. • The capacitor voltage cannot change ...
... switch is closed, the current jumps to E/R, then decays to zero. • At the instant of switching, the circuit looks like a short circuit. • The voltage across the capacitor begins at zero and gradually climbs to E volts. • The capacitor voltage cannot change ...
chapter 1 - UniMAP Portal
... • Composed of a coil or wire wound around a nonmagnetic core/magnetic core. • Its behavior based on phenomenon associated with magnetic fields, which the source is current. • A time-varying magnetic fields induce voltage in any conductor linked by the fields. • Inductance is the circuit parameter wh ...
... • Composed of a coil or wire wound around a nonmagnetic core/magnetic core. • Its behavior based on phenomenon associated with magnetic fields, which the source is current. • A time-varying magnetic fields induce voltage in any conductor linked by the fields. • Inductance is the circuit parameter wh ...
FSS-SMT Series Low Profile Force Sensors
... 1. All force-related specifications are established using dead weight or compliant force. 2. The range of voltage excitation which can be supplied to the product to produce an output which is proportional to force but due to ratiometricity errors may not remain within the specified performance limit ...
... 1. All force-related specifications are established using dead weight or compliant force. 2. The range of voltage excitation which can be supplied to the product to produce an output which is proportional to force but due to ratiometricity errors may not remain within the specified performance limit ...
Chapter 3: From lumped to distributed elements
... Quality factor Q = omega0*av. Energy stored/av. Energy dissipated Q = f0/3dB BW (relatively low due to losses in coil) High tolerance on resonant frequency At resonance: currents trough C and L cancel out and equal Q times the resistor current Piezo-acoustic resonators Quartz (SiO2) crystal High Q, ...
... Quality factor Q = omega0*av. Energy stored/av. Energy dissipated Q = f0/3dB BW (relatively low due to losses in coil) High tolerance on resonant frequency At resonance: currents trough C and L cancel out and equal Q times the resistor current Piezo-acoustic resonators Quartz (SiO2) crystal High Q, ...
Electronic-Fault-Finding-Support
... Fault Finding Techniques In electronic systems there are two major methods for tracing faults within a system, they are called: ...
... Fault Finding Techniques In electronic systems there are two major methods for tracing faults within a system, they are called: ...
Fundamentals of Electricity - Franklin County Amateur Radio Club
... a 3 dB gain in an amplifier means that the output power is 2 x the input power a 10 dB gain in an amplifier means that the output power is 10 x the input power ...
... a 3 dB gain in an amplifier means that the output power is 2 x the input power a 10 dB gain in an amplifier means that the output power is 10 x the input power ...
Understanding of IC555 Timer and IC 555 Timer Tester
... The IC was designed in 1971 by Hans Camenzind under contract to Signetics, which was later acquired by Philips (now NXP). Depending on the manufacturer, the standard 555 package includes 25 transistors, 2 diodes and 15 resistors on a silicon chip installed in an 8-pin mini dualin-line package (DIP-8 ...
... The IC was designed in 1971 by Hans Camenzind under contract to Signetics, which was later acquired by Philips (now NXP). Depending on the manufacturer, the standard 555 package includes 25 transistors, 2 diodes and 15 resistors on a silicon chip installed in an 8-pin mini dualin-line package (DIP-8 ...
RF2480
... Power Down control. When this pin is "low", all circuits are shut off. A "low" is typically 1.2V or less at room temperature.When this pin is "high" (VCC), all circuits are operating normally. If PD is below VCC, output power and performance will be degraded. Operating in this region is not recommen ...
... Power Down control. When this pin is "low", all circuits are shut off. A "low" is typically 1.2V or less at room temperature.When this pin is "high" (VCC), all circuits are operating normally. If PD is below VCC, output power and performance will be degraded. Operating in this region is not recommen ...
RT8420 –45° to 0–200 Turns • 0..20mA • 4..20mA 0
... Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein might be trademarks of their respective owners. The information given herein, including drawings, illustrations and schematic ...
... Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein might be trademarks of their respective owners. The information given herein, including drawings, illustrations and schematic ...
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.