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Home Transistor Oscillators NegativeResistance Oscillators Stabilizing Circuitry  
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Stabilizing CircuitryAuthor: Leonard Krugman
Fig. 612. (A) Stabilized basecontrolled highfrequency oscillator. (B) Alternate method of providing common bias supply. Except for the inductance and capacitance elements of the resonant network, the values of the external components in negativeresistance oscillators are not critical The values of R_{E} and R_{c} should be large enough to limit their respective currents to safe values, but not so large that they cause excessive degeneration. The value of the base resistance R_{B} must be large enough to provide sufficient regeneration for sustained oscillation. Typical values for these parameters are: R_{E} = 50 to 2,000 ohms; R_{c} = 2,000 to 10,000 ohms; R_{B} = 10,000 to 20,000 ohms.


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