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TRANSPAK T752 ™ Potentiometer Input Isolating, Field
TRANSPAK T752 ™ Potentiometer Input Isolating, Field

... 2. Select the output range using switch 1. The CLOSED position selects a 10-50mA output. The OPEN position selects a 4-20mA output. (Switches 2-6 are not used.) 3. Connect the input to a potentiometer. Connect the output loop to a voltage supply and monitor the output current (refer to the terminal ...
N-type (ex. Silicon doped with Phosphorus) has extra electron
N-type (ex. Silicon doped with Phosphorus) has extra electron

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P-N Junction P-type (ex. Silicon doped with Boron) has “holes” N

High Voltage and Load Current Monitors
High Voltage and Load Current Monitors

using the tl7726 hex clamping circuit
using the tl7726 hex clamping circuit

... injected into either the input or output pins of the device, the thyristor triggers and a short circuit results between the supply rails (latch-up). This usually results in catastrophic device failure. Through careful semiconductor design and by using the device within the manufacturers’ absolute ma ...
APA 4314 Laboratory No. 8 Electromyography: Isometric Contractions
APA 4314 Laboratory No. 8 Electromyography: Isometric Contractions

Lab 1 - Rose
Lab 1 - Rose

... them (i.e. compute percentage difference) with the ones you read using the DMM. (Clue: Remember 2 for sinusoids?) 5.7 Observe the fact that the voltage across the capacitor is not in phase with the input voltage. Measure by how much time the capacitor voltage is delayed from the input voltage. To d ...
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tic226 series silicon triacs

Non-RF Applications for the Surface Mount Schottky Diode Pairs
Non-RF Applications for the Surface Mount Schottky Diode Pairs

... 50 Ω. When an output gate is connected to an input gate using a microstrip transmission line, the line is terminated by the high input resistance of the input gate; thus, it can be considered “open.” Due to the open transmission line, a rising or falling signal overshoots and can exceed the maximum ...
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Wien-Bridge and Phase-Shift Oscillators

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...  However, introducing integral mode has a negative effect on speed of the ...
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SGA6589Z 数据资料DataSheet下载

... The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or ot ...
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LM2662 Switch cap inverter-doubler.pdf

MAX660 CMOS Monolithic Voltage Converter _______________General Description ___________________________ Features
MAX660 CMOS Monolithic Voltage Converter _______________General Description ___________________________ Features

... during charge-pump operation. The voltage drop due to C1 is therefore about four times C1’s ESR multiplied by the load current. Consequently, a low (or high) ESR capacitor has a much greater impact on performance for C1 than for C2. Generally, as the pump frequency of the MAX660 increases, the capac ...
RHD5903 - Aeroflex Microelectronic Solutions
RHD5903 - Aeroflex Microelectronic Solutions

DS2129 - Maxim Integrated
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... decreases, then the output signal level will tend to decrease. This in turn means that the feedback signal level will decrease proportionately. The reduced feedback signal level is then subtracted in the summing unit from the constant input signal level to give an increased error signal. This increa ...
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Bip Transistor 160V 1.5A VCE(sat);500mV max. PNP Single TO-126ML
Bip Transistor 160V 1.5A VCE(sat);500mV max. PNP Single TO-126ML

... Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpos ...
General
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... 9. To draw the I-V characteristics of the bridge rectifier (i) without using any filter and (ii) using a capacitance input filter. (The bridge rectifier should be fabricated by the student using four diodes. % voltage regulations has to be calculated from each graph at a specified load current.) 10. ...
LCD Displays
LCD Displays

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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.
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