Keywords: Negative resistance oscillator circuit CCNR.svg Negative resistance oscillator circuit used with current controlled negative differential resistance CCNR devices CCNRs require high impedance DC bias and are stable for load impedances greater than their differential resistance r so they are called open-circuit stable devices Therefore they are often used in circuits like this with a current source I<sub>bias</sub> which could be a voltage source in series with a resistor to bias the device and a series resonant circuit LC as a load The series resonant circuit has a low impedance at its resonant frequency but a high impedance at all other frequencies so the circuit will be unstable and oscillate only at the resonant frequency 2012-12-26 16 52 22 own Chetvorno cc-zero Uploaded with UploadWizard Negative resistance Resistor schemas |