UC2841数据资料 dataSheet 下载
... CR is normally selected ≤ CT and its value will have some effect upon valley voltage. Limiting the minimum value for ISENSE will establish a maximum duty cycle clamp. CR terminal can be used as an input port for current mode control. Conventional operational amplifier for closed-loop gain and phase ...
... CR is normally selected ≤ CT and its value will have some effect upon valley voltage. Limiting the minimum value for ISENSE will establish a maximum duty cycle clamp. CR terminal can be used as an input port for current mode control. Conventional operational amplifier for closed-loop gain and phase ...
15-A, 48-V INPUT, 5-V OUTPUT, ISOLATED, 1/8th BRICK DC/DC
... 1. The Remote On/Off control uses –VI (pin 3) as its ground reference. All voltages are with respect to –VI. 2. An open-collector device (preferably a discrete transistor) is recommended. A pull-up resistor is not required. If one is added the pull-up voltage should not exceed 20 V. Caution: Do not ...
... 1. The Remote On/Off control uses –VI (pin 3) as its ground reference. All voltages are with respect to –VI. 2. An open-collector device (preferably a discrete transistor) is recommended. A pull-up resistor is not required. If one is added the pull-up voltage should not exceed 20 V. Caution: Do not ...
FNB40560 Motion SPM 45 Series FNB40560 Motio
... Figure 13. Short-Circuit Protection (Low-Side Operation Only) ...
... Figure 13. Short-Circuit Protection (Low-Side Operation Only) ...
Dual Interleaved Active-Clamp Forward With Automatic Charge
... problems when the input voltage or output range is wide. For example, synchronous rectifiers with higher voltage rating are needed at the penalty of degrading the efficiency. Another disadvantage is the higher duty ratio variation, which makes the topology unsuitable for wide range application. Also ...
... problems when the input voltage or output range is wide. For example, synchronous rectifiers with higher voltage rating are needed at the penalty of degrading the efficiency. Another disadvantage is the higher duty ratio variation, which makes the topology unsuitable for wide range application. Also ...
1030.Multi-phase stackable controllers for Non
... rising voltage across the capacitor serves as a reference for the error amplifier • When TRK pin voltage reaches the level of the reference voltage 0.7V, the converter’s output reaches the regulation point •When TRK pin voltage reaches 1.4 V, the PGOOD pin goes high at this time. •TRK pin voltage co ...
... rising voltage across the capacitor serves as a reference for the error amplifier • When TRK pin voltage reaches the level of the reference voltage 0.7V, the converter’s output reaches the regulation point •When TRK pin voltage reaches 1.4 V, the PGOOD pin goes high at this time. •TRK pin voltage co ...
Alternating Current - Sakshieducation.com
... An ideal choke draws a current of 8A when connected to an AC supply of 100V, 50Hz. A pure resistor draws a current of 10A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the AC source of 150V, 40Hz. The current in the circuit becomes ...
... An ideal choke draws a current of 8A when connected to an AC supply of 100V, 50Hz. A pure resistor draws a current of 10A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the AC source of 150V, 40Hz. The current in the circuit becomes ...
Basic Audio Electronics Document
... 100W into 8-ohm speakers 28.3V 3.54A 1000W into 8-ohm speakers 89.4V 11.2A 1000W into 4-ohm speakers 63.2V 15.8A 1000W into 2-ohm speakers 44.7V 22.4A 1000W into 1-ohm speakers 31.6V 31.6A ...
... 100W into 8-ohm speakers 28.3V 3.54A 1000W into 8-ohm speakers 89.4V 11.2A 1000W into 4-ohm speakers 63.2V 15.8A 1000W into 2-ohm speakers 44.7V 22.4A 1000W into 1-ohm speakers 31.6V 31.6A ...
E 71 SERIES Monitoring relays 10 A
... LED red flashing: delay time is running, see the function diagram. LED red steady light: output relay is off, contact 11-14 (6-2) is open. Phase asymmtery is outside of the predefined range. LED steady light: output relay is turned off, contact 11-14 (6-2) is open. ...
... LED red flashing: delay time is running, see the function diagram. LED red steady light: output relay is off, contact 11-14 (6-2) is open. Phase asymmtery is outside of the predefined range. LED steady light: output relay is turned off, contact 11-14 (6-2) is open. ...
AN-162 LM2907 Tachometer/Speed Switch Building Block
... AN-162 LM2907 Tachometer/Speed Switch Building Block Applications ...
... AN-162 LM2907 Tachometer/Speed Switch Building Block Applications ...
A 25 kV, 75 kHz, KICKER FOR MEASUREMENT OF MUON
... “MuLan” experiment will take place at the Paul Scherrer Institut (PSI) in Northern Switzerland. The MuLan method requires a fast beam line kicker, which can turn the beam on and off, to invoke an artificial time structure on the continuous beam which has a 50.6 MHz time microstructure The kicker nee ...
... “MuLan” experiment will take place at the Paul Scherrer Institut (PSI) in Northern Switzerland. The MuLan method requires a fast beam line kicker, which can turn the beam on and off, to invoke an artificial time structure on the continuous beam which has a 50.6 MHz time microstructure The kicker nee ...
AL9910-5 - Diodes Incorporated
... The LED brightness can be dimmed either linearly (using the LD pin) or via pulse width modulation (using the PWM-D pin); or a combination of both - depending on the application. Pulling the PWM_D pin to ground will turn off the AL9910. When disabled, the AL9910’s quiescent current is typically 0.5mA ...
... The LED brightness can be dimmed either linearly (using the LD pin) or via pulse width modulation (using the PWM-D pin); or a combination of both - depending on the application. Pulling the PWM_D pin to ground will turn off the AL9910. When disabled, the AL9910’s quiescent current is typically 0.5mA ...
Lesson 1 Fundamental..
... Circuit Elements: Comments about ideal model The ideal independent voltage and current sources are models. As such, they are subject to limitations. For example, an independent voltage source, that one commonly works with, cannot put-out 1x10320 volts. Neither can an ordinary independent current sou ...
... Circuit Elements: Comments about ideal model The ideal independent voltage and current sources are models. As such, they are subject to limitations. For example, an independent voltage source, that one commonly works with, cannot put-out 1x10320 volts. Neither can an ordinary independent current sou ...
Tests of STO IF Components S. Weinreb April 15, 2009
... • Two 1-2 GHz IF amplifier plates and one 5 GHz converter plate for the Texas test flight have been assembled and tested. • Components for six more IF amplifier strings are on hand for the Antarctic flight. ...
... • Two 1-2 GHz IF amplifier plates and one 5 GHz converter plate for the Texas test flight have been assembled and tested. • Components for six more IF amplifier strings are on hand for the Antarctic flight. ...
Circuits II Tut
... The following questions all involve circuits you’ve seen before, so the “answer” (which bulbs are brighter than which other bulbs) isn’t the point. The point is to think about the reasoning you could use to predict and explain the relative brightness of the bulbs. A. Three students give predictions ...
... The following questions all involve circuits you’ve seen before, so the “answer” (which bulbs are brighter than which other bulbs) isn’t the point. The point is to think about the reasoning you could use to predict and explain the relative brightness of the bulbs. A. Three students give predictions ...
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.