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MR850, MR851, MR852, MR854, MR856 Axial Lead Fast Recovery
MR850, MR851, MR852, MR854, MR856 Axial Lead Fast Recovery

High current MOSFET driver
High current MOSFET driver

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... protection pin to pin (serial-port connection pins, including GND). This device provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. This ...
a Low Noise, 90 MHz Variable-Gain Amplifier AD603*
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... The differential gain-control interface allows the use of either differential or single-ended positive or negative control voltages. Several of these amplifiers may be cascaded and their gain-control gains offset to optimize the system S/N ratio. The AD603 can drive a load impedance as low as 100 Ω ...
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... A feature of a HCMOS circuit is its speed - in general, comparable to that of its LSTTL equivalent. Owing to the different (more informative) way of specifying data for HCMOS devices, it will be useful to indicate how to compare the published data for HCMOS and LSTTL. For example, in an LSTTL specif ...
Title Limit Cycle Behavior in a Class-AB Second
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... for innovative approaches to meet today’s tight system requirements for large signal-to-noise ratios, low distortion levels, low power consumption, and high speed. However, after the application of a standard linear IC design technique, one form of companding filters, where analog processing occurs ...
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... A thermistor is connected to a resistor R and a 6 V power supply as shown in Figure 8. The resistance of R is 470 . A voltmeter of high resistance is connected across R. Figure 9 shows the variation of resistance of the thermistor with temperature. ...
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... - © NXP N.V. (year). All rights reserved or © Koninklijke Philips Electronics N.V. (year). All rights reserved Should be replaced with: - © Nexperia B.V. (year). All rights reserved. If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or telephone ...
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... However, all available Analogue pins in PORTA have been allocated. It is important to note in this special case that two circuits are connected to one Analogue pin on the PIC chip. This is possible because the LCD pins can be enabled and disabled so that the LCD signal is not affected by the Analogu ...
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MAX4063 Differential Microphone Preamplifier with Internal Bias and Complete Shutdown General Description

... Auxiliary Input The auxiliary input is a single-ended input intended to be used with a jack-socket type microphone input (Figure 1). Internal DC-bias components (as on the main inputs) allow the input signal to be AC-coupled. Mechanically switched jack sockets can be used in conjunction with the INT ...
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... yourself, are invaluable. The fact that laser range finders are now commercially available for relatively low prices does not change the complexity of building one yourself. Time-of-flight based rangefinders are extremely complex and require the designers to be extremely precise in their actions. T ...
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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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