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SN754410 Quadruple Half-H Driver (Rev. C)
SN754410 Quadruple Half-H Driver (Rev. C)

... Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network GND. For operation above 25°C free-air temperature, derate linearly at the rate of 16.6 mW/°C. To avoid exceeding the design maximum ...
LTC1957-1/LTC1957-2 - Single/Dual Band RF Power Controllers with 40dB Dynamic Range.
LTC1957-1/LTC1957-2 - Single/Dual Band RF Power Controllers with 40dB Dynamic Range.

... current to about 2.25A. The regulated current limit is temperature compensated. The 0.050Ω resistor and the current limit feature can be removed by connecting the PA directly to VIN. The RF power amplifier control voltage pins are overvoltage protected. The VPC overvoltage clamp regulates VPCA or VP ...
Current and Resistance
Current and Resistance

... We can see from this expression that the inverse of the equivalent resistance of two or more resistors connected in parallel is equal to the sum of the inverses of the individual resistances. Furthermore, the equivalent resistance is always less than the smallest resistance in the group. ...
Resistivity and Circuits
Resistivity and Circuits

...  Can cause gasoline explosions - why plane is always grounded to fuel pump before refueling  Partially responsible for process of bacteria sticking to surfaces or other cells ...
R 2
R 2

Lecture 37: CMOS Digital Logic Inverter.
Lecture 37: CMOS Digital Logic Inverter.

... W) in both states. The dynamic power dissipation is not zero as the gates are changing states. 3. Low output resistance in either state: low resistance to ground in the “low” output state, and low resistance to VDD in the “high” state. 4. Input resistance of the inverter is very large (ideally infi ...
Principles of Electronic Communication Systems
Principles of Electronic Communication Systems

Circuits - Lake Area Radio Klub
Circuits - Lake Area Radio Klub

The dB in Communications
The dB in Communications

... dBm 1 milliwatt (.001W), Typical measurement for audio input/output specifications. Also used in low power optical transmitter specifications. dBm(600) The standard audio reference power level defined by 1 milliwatt measured with respect to a 600 ohm load. This measurement is commonly used in broadc ...
EXPERIMENT 3 Resistors in Series and in Parallel
EXPERIMENT 3 Resistors in Series and in Parallel

an electric fence energizer design method
an electric fence energizer design method

SHPE Foundation Noche de Ciencias Hands
SHPE Foundation Noche de Ciencias Hands

shure uhf wireless system
shure uhf wireless system

... The wireless microphone system shall be a frequency–agile, signal combining diversity system which operates in the UHF band between 782.125 MHz and 809.875 MHz (up to 805.875 MHz in the U.S.A.). Hand–held transmitters shall include an integral dynamic or condenser microphone. Body–pack systems shall ...
MAX680/MAX681 +5V to ±10V Voltage Converters ________________General Description ____________________________Features
MAX680/MAX681 +5V to ±10V Voltage Converters ________________General Description ____________________________Features

... The MAX680/MAX681 are not voltage regulators: the output source resistance of either charge pump is approximately 150Ω at room temperature with VCC at 5V. Under light load with an input VCC of 5V, V+ will approach +10V and V- will be at -10V. However both, V+ and V- will droop toward GND as the curr ...
Unit 16* Alternating Current (AC)
Unit 16* Alternating Current (AC)

... 10. The current and voltage in a pure resistive circuit are in phase with each other. ...
HMC866LC3C - seek datasheet
HMC866LC3C - seek datasheet

... The amplifier supports up to 43 Gbps operation and provides 29 dB of differential gain. The output voltage swing is adjustable up to 800 mVp-p differential by using the VAC analog control input and the additive RMS jitter is less than 300 fs for 32 Gbps operation. The amplifier allows external offse ...
KSH45H11 PNP Epitaxial Silicon Transistor Absolute Maximum Ratings
KSH45H11 PNP Epitaxial Silicon Transistor Absolute Maximum Ratings

... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when p ...
Order Specifications for Off-Circuit Tap Changer Shanghai Huaming
Order Specifications for Off-Circuit Tap Changer Shanghai Huaming

... Note: CMA7 motor drive unit is specified by Huaming for big current WSL/WDL Motor driving at top of OCTC Cable between OCTC & controller ( )m (standard offer 30m ) Only for maximum current 600A, highest voltage 40.5kV, linear regulation and single bridging ...
Steady-State and Dynamic Performance Characterization of a
Steady-State and Dynamic Performance Characterization of a

Effect of Lead Wire Lengths on Protector Clamping Voltages
Effect of Lead Wire Lengths on Protector Clamping Voltages

... calculated to be 70 mJ, sufficient energy to destroy most types of MOS and some TTL devices. By reducing the lead length to zero and repeating the pulsing, the overshoot voltage is reduced to about 200 V. The energy under this curve is less than 1 mJ, below the destruct threshold of MOS and TTL devi ...
The 555 Timer IC
The 555 Timer IC

... The voltage range that can safely be applied to the trigger pin is between V+ and ground. A dc current, termed the trigger current, must also flow from this terminal into the external circuit. This current is typically 500nA (nano-amp) and will define the upper limit of resistance allowable from pin ...
PSC18
PSC18

SPECIFICATION FOR 75 KV,75 mA, DC HV TEST KIT
SPECIFICATION FOR 75 KV,75 mA, DC HV TEST KIT

... The utility of this will be for the testing of wound stators and rotors of hydro-generator/motors at various stages of manufacturing and/or erection at different applied voltages. The equipment must be complete with HVDC Source, Full Wave Rectifier, capacitor Bank, timer, metering & protective devic ...
Micro Sensing Device Data Book
Micro Sensing Device Data Book

... for 100 ms after the power supply is turned ON. Also be careful if the power supply is turned OFF in the application to save energy when the Photomicrosensor is not used. When using a Photomicrosensor with a phototransistor output outside of the saturation region, stabilization time is required to a ...
Photologic® Slotted Optical Switch
Photologic® Slotted Optical Switch

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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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