File:Varicap Ccts.jpg

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Summary

Description
English: This image depicts three methods of placing varicap diodes

in a circuit. 

 The simplest method involves placing the varicap in series

with the oscillator resonator inductive element with a D.C. blocking capacitor in between, then applying the D.C. bias to the varicap via a high value resistor (47-100K) to vary its capacitance and thus the resonant frequency of the circuit. 

   The second method involves using two varicaps in series, back-to-back. In this case no D.C. blocking capacitor is required, but the capacitance is halved.
   The third circuit is similar but has two seperate A.C. and D.C. "earths" coupled by a blocking capacitor.
The blocking capacitors are in the range of 10-100nF.
Русский: Некоторые схемы включения варикапа
Date
Source Own work
Author Globe Collector
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Captions

This image depicts three methods of placing varicap diodes

Items portrayed in this file

depicts

inception

13 January 2012

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image/jpeg

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current02:39, 14 January 2012Thumbnail for version as of 02:39, 14 January 20121,848 × 744 (71 KB)Globe Collector{{Information |Description ={{en|1= This image depicts three methods of placing varicap diodes in a circuit. The simplest method involves placing the varicap in series with the oscillator resonator inductive element with a D.C. blocking capacitor in
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