Re: Early oscillatory circuits

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "D.C. Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<resonance-at-jvlnet-dot-com>
> 
> Joseph Henry, in 1842, first noticed that induction coils can become
> oscillatory in nature when a capacitor (condensor in those days) was added
> to the circuit.
> 
> In 1847 Helmholtz also noticed the oscillatory nature of the Leyden jar.
> 
> Felix Savary, in 1827, actually was the first experimenter to note
> oscillatory discharges from capacitors.  Savary did not attach an inductor
> and did not discover the LC circuit combination.
> 
> Prof. Oliver Lodge, in Liverpool, in 1888, independently discovered the
> oscillatory nature of electric current while studying lightning discharges.
> 
> Tesla probably beat everyone, but, since he didn't publish much in the
> scientific journals of that era, missed early credit for the discovery of
> tuned circuits.

	Tuned circuits were thoroughly understood before Tesla's time, but he
certainly appears to have pioneered their use as "resonance
transformers" for production of high voltages at high frequencies.

Ed