Re: VTTC Horizonal coil

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

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

James:The vertical and horizontal coils are made to operate at different
frequencies on a picture TUBE. The vertical coil uses a 60 Hz sweep
frequency and the horizontal coil sweeps at 18750 Hz. The higher frequency
coil is smaller in size. This high frequency is also used to generate high
voltage to supply the aquadag coating inside the TUBE. The red wire with the
rubber cap. This is 10 Kv or more as requirerd by the picture TUBE. The
flyback circuit also has diodes to rectify and multiply the DC voltage. The
old flyback coils used a single diode and many turns of wire to produce the
neaded high voltage. Modern flyback coils have a series of diodes and
capacitors to multiply the voltage. This makes the coil smaller and less
costly to make. Since ths coil is a lower voltage the insulation required is
less. The current required is very low to produce a field charge so the wire
is very small. The vertical circuit is much less complex as it has no high
voltage components, just sweep current at a lower frequency.
     In a TC coil the primary coil is very high current because it has all
ite current stored in the capacitor at the time of discharge. The secondary
coil has high voltage at very low current. In a VTTC circuit the primary
current is much lower but the frequency is higher to compensate.
  Robert  H   

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Sun, 23 Jun 2002 22:24:13 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: VTTC Horizonal coil
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Sun, 23 Jun 2002 22:26:22 -0600
> 
> Original poster: "James by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <mustang3-at-cox-dot-net>
> 
> Hi Ralph, all,
> I have been wondering about the field on the horizontal coil. My theory
> is that since the horiz coil is effectively shorted(the discharge rods
> couple the energy back together as a spark). The field extends well out on
> the vertical toob coil. The horiz coil has a very limited field. Its easy to
> see the field with a florescent lamp. The vertical coil has the bottom end
> of the secondary grounded and the top end is radiating. I guess this is the
> main reason.
> 
> later,
> 
> James
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Sunday, June 23, 2002 2:00 PM
> Subject: Re: VTTC Horizonal coil
> 
> 
>> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Parpp807-at-aol-dot-com>
>> 
>> In a message dated 6/22/02 9:59:31 PM Central Daylight Time,
> tesla-at-pupman-dot-com
>> writes:
>> 
>>> The field on the horizontal coil
>>> is not as strong as the vertical coil.
>> 
>> Hi James,
>> 
>> Why is there a difference in field strength from the vertical to the
>> horizontal?
>> Perhaps the difference is due to the mounting and support of the coil.
>> 
>> Cheers,
>> Ralph Zekelman
>> 
>