DIODO VARICAP. Los diodos varactores o varicap han sido diseñados de manera que su funcionamiento sea similar al de un capacitor y. Diodo Varicap. JC. Johan Cordoba Hoyos. Updated 9 March Transcript. Referencias de imagenes en orden de aparicion y Bibliografia. All following user names refer to dia. Kormoran 87× × ( bytes) Simbolo circuitale di un diodo varicap.

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File:Varicap – Wikimedia Commons

This work has been released into the public domain by its author, Example dioco the [[:: Popular makeshift varicaps include LEDs, [5] 1NX series rectifier diodes, [6] Schottky variccap and various transistors used with their collector-base junctions reverse biased, [7] particularly the 2N and BC Capacitor types Ceramic resonator Crystal oscillator Inductor Parametron Relay reed relay mercury switch. In electronicsa varicap diodevaractor diodevariable capacitance diodevariable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased p—n junction.

Dr Tuttle’s Home Page. When in the high capacitance state, usually with low or no bias, they present a low impedance path to RF, whereas when reverse biased their capacitance abruptly decreases and varicxp RF impedance increases. This licensing tag was added to this file as part of the GFDL licensing update.

These types were — and still are — extensively used in television tuners, whose high carrier frequencies require only small changes in capacitance. The three leaded devices depicted at the top of the page are generally two common cathode connected varicaps in a single package.


In case this is not legally possible: This is a retouched picturewhich means that it has been digitally altered from its original version.

They are often used in pairs to dioso between two different RF sources such as the VHF and UHF bands in a television tuner by supplying them with complementary bias voltages. Diodo varicap em diferentes encapsulamentos. The DC bias voltage must be blocked from entering the tuned circuit. The original description page was here. Adobe Photoshop CS Windows. By using this site, you agree to the Terms of Use and Privacy Policy.

Although they are still slightly conductive to the RF path, the attenuation they introduce decreases the unwanted signal to an acceptably low level. Vzricap file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it.

Microelectronic circuits 6th ed.

Wikipedia articles needing clarification from May Articles needing additional references from September All articles needing additional references Wikipedia articles needing clarification from January Commons category link is on Wikidata Wikipedia articles with GND identifiers. Retrieved from ” https: This page was last edited on 28 Augustat If the file has been modified from its variap state, some details such as the timestamp may not fully reflect those of the original file.

By using this site, you agree to the Terms of Use and Privacy Policy. This reduces the overall capacitance and the capacitance range by half, but has the advantage of reducing the AC component of voltage across each device and has symmetrical distortion should the AC component possess enough amplitude to bias the varicaps into forward conduction. All following user names refer to it.


1SV Varicap Diode pF

Varucap original uploader was Kormoran at Italian Wikipedia. Date and time of digitizing lun 5 lug Special types of varicap diode exhibiting an abrupt change in capacitance can often be found in consumer equipment such as television tuners, which are used to switch radio frequency signal paths.

Views View Edit History. This depletion layer can also be made of a MOS or a Schottky diode.

1SV149 Varicap Diode 25-500pF

I, the copyright holder of this work, hereby publish it under the following license:. See lower left circuit in diagram. This section does not cite any sources.

Retrieved from ” https: Phase-locked loops are used for the frequency synthesizers that tune many radios, television setsand cellular telephones. Original uploader was Adiasmesquita at pt. Potentiometer digital Variable capacitor Varicap. From Wikimedia Commons, the free media repository.

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