D-Day Circuit: Understanding Leif's Analog Dialogue

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Discussion Overview

The discussion revolves around the D-Day circuit, specifically focusing on its design and functionality as an oscillator. Participants explore its components, potential applications, and the interpretation of schematic symbols, indicating a blend of theoretical understanding and practical application.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant describes the circuit as a clean start-up oscillator that utilizes two cross-coupled voltage controlled current source-capacitor pairs.
  • Another participant expresses interest in the circuit as a future project but finds the schematic challenging to understand.
  • A question is raised about the meaning of the infinity signs in the schematic, with one participant suggesting it indicates that the enabling voltage is obtained capacitively.
  • There is a proposal to create a circuit that uses an inductor to pick up the Earth's magnetic field as a source of starting voltage or noise.
  • One participant cautions that using noise as a driving source might undermine the intended purpose of the oscillator.

Areas of Agreement / Disagreement

The discussion contains multiple viewpoints regarding the interpretation of the circuit's functionality and the implications of using noise as a driving source. No consensus is reached on these points.

Contextual Notes

Participants express uncertainty about the implications of the infinity signs and the feasibility of using noise-driven methods in the context of the oscillator's design.

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Apparently its a clean start-up oscillator utilizing two crosscoupled voltage controlled current source-capacitor pairs as well as a source or great amusement at an Analog Devices presentation. But I suspect you are asking something else.
 
no that was what I was asking, I think this will be a future project, it seems simple enough it's just hard to wrap my head around this schematic.

btw what do the infinity signs mean?

I was thinking maybe I could make an Oscar type circuit with an inductor picking up the Earth's magnetic field as the starting voltage/noise?
 
I think the infinity sign indicates that the enabling voltage is capactively obtained (no resistive elements).

I guess this could be noise driven. But it defeats the reason to use this oscillator in the first place.
 

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