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Re: LC circuit

 Subject: Re: LC circuit John Popelish Fri, 03 Mar 2006 22:42:02 -0500 sci.electronics.basics, sci.electronics.misc
 ```Ken wrote: ``````Here is an LC meter that uses a comparator to produce the negative resistance to keep an arbitrary LC tank oscillating. http://my.integritynet.com.au/purdic/lc-meter-project.htm#circuit-osc `````` Looks good, thanks here is a link with my circuit so far and my problem: ```http://www3.sympatico.ca/lerameur/ ``` ```As I understand your problem (correct my errors) you want to cause an LC tank to oscillate. But you don't want it to be driven into oscillation, continuously, but given a blast of energy only when the oscillation has damped down to some minimum amplitude. I don't understand if the blast is to be a single pulse, of a negative resistance that feeds energy in, slowly, till the amplitude gets to a second, larger amplitude. Then there is some other feature about operating only when the supply voltage is larger than some value. ``` ```
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