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BCX54 /55 /56 Features Mechanical Data
BCX54 /55 /56 Features Mechanical Data

... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
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A Cross-Coupled CMOS Negative Capacitor for Wideband Metamaterial Applications

Reed Relays Capable of Switching Low Micro-Volts Signals
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... successfully turned on and the contacts are closed. (generally less than 1 ms). Depending upon the characteristics of a 5 volt relay, one may reduce the voltage by one to two volts. Since the power is reduced as the square of the voltage (V2), the heat is reduced at that same rate. This approach wil ...
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... The MAX1179 accepts a bipolar input voltage range of ±5V. The MAX1187 accepts an analog input voltage range from 0 to +10V, while the MAX1189 accepts a bipolar analog input voltage range of ±10V. All devices consume only 23mW at a sampling rate of 135ksps when using an external reference and 29mW wh ...
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Proceedings of the 15th IEEE International Symposium

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Performance of Digital Discrete-Time Implementations of Non-Foster Circuit Elements

... or V (z)(1 z 1 ). Voltage controlled current source SRC2 with transconductance 0.005 S generates the current Iin of Fig. 3 as seen at the input terminals and monitored by current probe I probe in Fig. 2. Source SRC1 is the system clock and sets the sample period at T = 5 ns. Thus, the overall transf ...
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RF-and Noise-Modeling of Semiconductor devices based on InP

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... From a solid-state circuit (proximity sensor, photoelectric sensor, or the like) with rated power supply voltage ranging from 6 to 30 VDC, input signals can also be applied by other than an open collector type transistor as shown in the following diagram. The input signal from a solid-state circuit ...
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LTC1983-3/LTC1983-5

... Aluminum electrolytic are not recommended because of their high equivalent series resistance (ESR). If the source impedance is very low, CIN may not be needed. Increasing the size of COUT to 10µF or greater will reduce output voltage ripple. The flying capacitor and COUT should also have low equival ...
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... monitoring their voltage, which is much easier and more effective than measuring their resistance. You can check the thermistor voltage "live" with the car running. When you check these sensors the way that the service manual recommends, you have to stop the car, unplug the sensor, and measure the r ...
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... Power is applied to the points labeled J4 for V−, J6 for V+, and J7 for GND. If a single supply is used, then V− should be connected to GND. A virtual ground, halfway between the positive supply voltage and ground, is the reference point for the input and output voltages. The output voltage swings a ...
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Modeling and design of a current mode control boost converter

... Figure 4.2 Unstable waveform of Vsw, IL and Vout at Vin=3.5V, L=3.3uH .............. 40 Figure 4.3 Open loop bode plot for Vin=5.5V, L=3.3uH ............................................. 40 Figure 4.4 Waveform of Vsw, IL and Vout for Vin=5.5V, L=3.3uH ........................... 41 Figure 4.5 Open l ...
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AZV321 Description Pin Assignments

... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
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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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