Equivalent Circuits for Negative Resistance Devices
Abstract
The report examines certain phases of the dynamic behavior of an open-circuit stable, two-terminal negative-resistance device with its specific equivalent circuit, as well as the dynamic behavior of a short-circuit stable, two-terminal negative-resistance device with its specific equivalent circuit. The equivalent circuits for these two devices are duals of each other. The static current/voltage characteristic curves for the two types of negative- resistance devices affect their dynamic equivalent circuits. It is shown that the static current/voltage characteristic curve for the negative-resistance device has a limited negative-slope region since the device possesses particular physical restrictions. The complete equivalent circuit for the current- controlled and voltage-controlled negative-resistance devices is derived by recognizing specific information about the device. The basic equivalent circuit for the negative-resistance device is obtained by assuming a cause-effect relationship between the current and voltage of the device and then by using the Taylor Series expansion on the cause. The basic equivalent circuit for the negative-resistance device is related to the static current/voltage characteristic curve when the device is operated as a trigger circuit. Expressions for the input admittance of the current-controlled negative- resistance device and the input impedance of the voltage-controlled negative- resistance device are derived from the equivalent circuit of the device.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- AD0846083
Entities
People
- Ross M. Kaplan
Organizations
- Rome Laboratory