The lc wobbulator circuit with varactor diode

Published:2012/8/21 21:27:00 Author:Ecco | Keyword: lc wobbulator , varactor diode | From:SeekIC

Figure (a) shows the circuit with center frequency being adjusted to 1MHz, center frequency can also be changed by the oscillation circuit L and the value of C1.Figure (b) shows the curve between the center frequency f and voltage UR, voltage UR can be adjusted by 2.5kΩ potentiometer.The circuit output terminal A1 has about 50mV RMS voltage, the center frequency will generate modulated signal in the he baseband pendulum frequency range of ± 10%. The output terminal A2 has the same frequency square wave voltage with 8V output amplitude.



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