SECTION 260573 - ELECTRICAL SYSTEMS ANALYSIS
... Each curve sheet shall have appropriate identification and one-line diagram that applies to the specific portion of the system associated with time-current curves on that sheet. ...
... Each curve sheet shall have appropriate identification and one-line diagram that applies to the specific portion of the system associated with time-current curves on that sheet. ...
19.3 Resistance and resistivity
... 19.3 Resistance and resistivity 1. The label on a small heater specifies its electric performance as 115 V, 4.50 A. a. What is the resistance of the heating filament in this heater? b. How much current will it draw when connected to the following: (i) 120 V, (ii) 220 V (iii)60.0 V 2. Three resistor ...
... 19.3 Resistance and resistivity 1. The label on a small heater specifies its electric performance as 115 V, 4.50 A. a. What is the resistance of the heating filament in this heater? b. How much current will it draw when connected to the following: (i) 120 V, (ii) 220 V (iii)60.0 V 2. Three resistor ...
Current-Limited, Power-Distribution Switches
... to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to p ...
... to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to p ...
PRACTICAL ASSESSMENT
... (This task should be done before you commenced any work on the computer. From the nature of the fault try to establish what should be done in what steps.) List the tools, equipment and testing devices required to complete the task 1. Choose Two D.C power supplies source. 2. Digital multimeter to rea ...
... (This task should be done before you commenced any work on the computer. From the nature of the fault try to establish what should be done in what steps.) List the tools, equipment and testing devices required to complete the task 1. Choose Two D.C power supplies source. 2. Digital multimeter to rea ...
Ultra-Precision CML AnyGate with Internal Input and Output
... 4. The device is not guaranteed to function outside its operating ratings. 5. Due to the limited drive capability use for input of the same package only. 6. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. ΨJB uses 4-layer ...
... 4. The device is not guaranteed to function outside its operating ratings. 5. Due to the limited drive capability use for input of the same package only. 6. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. ΨJB uses 4-layer ...
DS4412 Dual-Channel, I C Adjustable Sink/Source Current DAC
... As a source for biasing instrumentation or other circuits, the DS4412 provides a simple and inexpensive current source with an I2C interface for control. The adjustable full-scale range allows the application to get the most out of its 4-bit sink or source resolution. When used in adjustable power-s ...
... As a source for biasing instrumentation or other circuits, the DS4412 provides a simple and inexpensive current source with an I2C interface for control. The adjustable full-scale range allows the application to get the most out of its 4-bit sink or source resolution. When used in adjustable power-s ...
Employ ammeter shunts and voltage multipliers
... Ammeter shunts are used internally to a meter to provide the usual switchselectable current ranges of the instrument. For measurement of even larger currents, low-resistance shunts can be connected externally on some instruments. Usually the shunt is separate if the current range is greater than 25 ...
... Ammeter shunts are used internally to a meter to provide the usual switchselectable current ranges of the instrument. For measurement of even larger currents, low-resistance shunts can be connected externally on some instruments. Usually the shunt is separate if the current range is greater than 25 ...
FOUR-WIRE RTD CURRENT-LOOP
... located remotely, wiring resistance adds to the RTD impedance and can cause significant error. The “three-wire” connection (shown in Figure 2) mitigates the problem, but depends on matching wiring resistance in RW1 and RW2 to achieve best accuracy. Applications where matching wiring resistance is n ...
... located remotely, wiring resistance adds to the RTD impedance and can cause significant error. The “three-wire” connection (shown in Figure 2) mitigates the problem, but depends on matching wiring resistance in RW1 and RW2 to achieve best accuracy. Applications where matching wiring resistance is n ...
SSM2250RM
... The SSM2250 features an audio amplifier capable of delivering 1.5 W of low distortion power into a mono 4 Ω bridge-tied load (BTL) or 2 × 90 mW into stereo 32 Ω single-ended load (SE) headphones. Both amplifiers provide rail-to-rail outputs for maximum dynamic range from a single supply. The balance ...
... The SSM2250 features an audio amplifier capable of delivering 1.5 W of low distortion power into a mono 4 Ω bridge-tied load (BTL) or 2 × 90 mW into stereo 32 Ω single-ended load (SE) headphones. Both amplifiers provide rail-to-rail outputs for maximum dynamic range from a single supply. The balance ...
Advantage of the use of an added driver source lead in discrete
... the output power levels are higher during both device turn-off and turn-on. The test results show that the MDmesh™ M5 technology device assembled with the driving source pin provides significant benefits when the switching current is higher than approximately 10 A at turn-off, but the advantages are ...
... the output power levels are higher during both device turn-off and turn-on. The test results show that the MDmesh™ M5 technology device assembled with the driving source pin provides significant benefits when the switching current is higher than approximately 10 A at turn-off, but the advantages are ...
MC1455 - Timers
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any partic ...
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any partic ...
Manual - James Miller`s Home Page
... The left-hand numeric push-button switch "Filter" should be set to value 1, and the LCD digital voltmeter reading will stabilise when preliminary system lock is achieved. This will take up to 15 minutes from cold, less if already warm. When stabilised, the Filter control can gradually be increased t ...
... The left-hand numeric push-button switch "Filter" should be set to value 1, and the LCD digital voltmeter reading will stabilise when preliminary system lock is achieved. This will take up to 15 minutes from cold, less if already warm. When stabilised, the Filter control can gradually be increased t ...
BDTIC www.BDTIC.com/infineon Power Management PX3516
... sink current efficiently and the bootstrap capacitor will be refreshed appropriately during each switching cycle. During the start up depending on several factors it can be that the power input for the conversion (12V) rise before the 5V input. In this case it could happen that the high side has an ...
... sink current efficiently and the bootstrap capacitor will be refreshed appropriately during each switching cycle. During the start up depending on several factors it can be that the power input for the conversion (12V) rise before the 5V input. In this case it could happen that the high side has an ...
LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
... current rating of the input capacitor should be selected to be at least 1⁄2 the DC load current. The capacitor manufacturer data sheet must be checked to assure that this current rating is not exceeded. The curves shown in Figure 14 show typical RMS current ratings for several different aluminum ele ...
... current rating of the input capacitor should be selected to be at least 1⁄2 the DC load current. The capacitor manufacturer data sheet must be checked to assure that this current rating is not exceeded. The curves shown in Figure 14 show typical RMS current ratings for several different aluminum ele ...
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.