NDR oscillator

Selvom komponenten er ulinear og har negativ differentiel modstand, er den som regel i mindre strøm- og spændings-intervaller linear, hvilket betyder at den differentielle modstand i intervallet er konstant.

I netop et nogenlunde lineart interval med negativ differentiel modstand, kan komponenten forstærke signaler nogenlunde lineart. En af de simpleste eksempler er at sætte komponenten i serie med en svingningskreds.

Når svingningskredsens samlede tab (incl. evt. ekstern belastningsmodstand) mere end ophæves, så vil kredsløbet fungere som en oscillator.

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Eksterne henvisninger

• Matematisk orienteret: Jim Lesurf: Negative Resistance Oscillators
• God: Negative Resistance Revived. by Lloyd Butler VK5BR. (Condensed version of article originally published in Amateur Radio, November 1995)
• Tysk - gode diagrameksempler: Claude Jacobs: Oszillator mit NEGISTOR "NDR Oscillator", "Negative Differential Resistance Oscillator", "NEGISTOR Oscillator"
• A Dip Meter Using the Lambda Negative Resistance Circuit. by Lloyd Butler VK5BR. (Originally published in Amateur Radio, January 1997)
• JLN labs: A Negative Differential Resistance Oscillator with a Negistor
  • The Negistor & Negative Resistance - 04/07/00 courtesy Marcelo Puhl
• By Nyle Steiner K7NS 2001. Hjemmelavede dimser med negativ modstandskarakteristikker anvendt i oscillatorer:
  • Negative Resistance Oscillator with Homemade Tunnel Diode
  • Other Homemade Semiconductor Materials Make Negative Resistance Oscillator
  • Iron Pyrites Negative Resistance Oscillator
  • Zinc Negative Resistance Oscillator
  • Code Practice Oscillator made from Homemade Active Semiconductor
• The Wireless World and Radio Review. October 1, 1924 and October 8, 1924: "The Crystal As A Generator And Amplifier" by Victor Gabel.
• Radio News, September, 1924, pages 294-295, 431: The Crystodyne Principle
• Radio News, September, 1924, page 291: A Sensational Radio Invention By HUGO GERNSBACK
• 2003, FU Berlin Digitale Dissertation: ...
  • 6 The impact of a negative global coupling on pattern formation during periodate reduction on Au(111) film electrodes Citat: "...As discussed in chapter 2, there are two main types of ‘NDR’ systems which give rise to instabilities in electrochemical systems: ‘N-NDR’ and ‘S-NDR’ systems..."
• GaN-based NDR Devices for THz Generation
• J T Lü and J C Cao 2004 Semicond. Sci. Technol. 19 451-456. Terahertz generation and chaotic dynamics in GaN NDR diode
• US PATENT SUBCLASS 331 / 132: Negative resistance or negative transconductance oscillator

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