Definition of "astable" []

• Not stable. (adjective)
• Having multiple states, none of which is stable. (adjective)

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• "Keep in mind, by 1990 we had already real­ized that green­house gas levels were too high to main­tain astable climate."
• "The transient spikes from the MOSFET operating in runaway "astable oscillation mode", help to both magnify in amplitude and increase in number (Frequency), the inductive spikes that come from the"
• "The Ainslie circuit has highly complex waveforms, and by all reports is somewhat difficult and sensitive to properly adjust to force the "MOSFET", a type of transistor/semiconductor, into the needed astable oscillation condition ... and it defies any easy explanations."