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Re: Fw: frequency (fwd)
to: Bob
Tesla first started using HF generators because the idea of a "LC tank"
circuit was not yet developed. It was the only way he knew to generate HF
currents -- the properties of which he wanted to study. He applied the HF
currents to standard lab induction coils. Later, he added capacitors to his
induction coils and started noting the HF currents could be generated in
frequencies much higher than his HF generators. His idea of using L and C
to generate HF currents was central to his TC and radio patents. Lord
Kelvin had earlier noted the oscillatory nature of a cap discharge but did
not add the necessary inductor to form the LC tank circuit. Also, remember,
back in those days communication from Europe to the states was rather
poor --- especially without Tesla's radio!!
Regards,
Dr.Resonance-at-next-wave-dot-net
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Tuesday, April 20, 1999 2:48 AM
Subject: Re: Fw: frequency (fwd)
>Original Poster: Robert Volk <smrtmny2-at-earthlink-dot-net>
>
>But why then did Tesla use high frequency generators?
>
>Bob
>
>
>> Bob,
>>
>> The frequency of the secondary (and primary) is for all practical
purposes
>> dependent only upon their inductance, self-capacitance, and added
>capacitance -
>> in the case of the primary, your main capacitor and in the secondary,
>your top
>> load. Altering the mains frequency (and the capacitor size accordingly)
and
>> retuning the coil will only change the break rate of the spark gap -
>instead of
>> 120bps you will get 800bps (If you were using a sync rotary you would
need to
>> power the motor off the same 400Hz too). The power supply frequenccy
should
>> never
>> havve any effect on, and certainly not reach the secondary - this is a
>> potentially lethal situation if a streamer with 60Hz or even 400Hz
>superimposed
>> in it hits you!
>>
>> Alex Crow
>