Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download VARACTOR DIODE
Document related concepts
Electronic engineering wikipedia , lookup
Index of electronics articles wikipedia , lookup
Valve RF amplifier wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Negative resistance wikipedia , lookup
Rectiverter wikipedia , lookup
Josephson voltage standard wikipedia , lookup
Crystal radio wikipedia , lookup
Surge protector wikipedia , lookup
Nanofluidic circuitry wikipedia , lookup
Power MOSFET wikipedia , lookup
Transcript
VARACTOR DIODE A Junction diode which acts as a variable capacitor under changing reverse bias is known as VARACTOR DIODE A varactor diode is specially constructed to have high resistance under reverse bias. Capacitance for varactor diode are Pico farad. (10-12 ) range CT = ЄA / Wd CT =Total Capacitance of the junction Є = Permittivity of the semiconductor material A = Cross sectional area of the junction WD= Width of the depletion layer Curve between Reverse bias voltage Vr across varactor diode and total junction capacitance Ct and Ct can be changed by changing Vr. Application for Varactor diode Use of varactor diode in a tuned circuit. Capacitance of the varactor in parallel with the inductor.(LC circuit)
