Re: pairing OBITs

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

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

What is a good size coil and cap to go with a single 10kv OBIT.
jim heagy

> Subj:  Re: pairing OBITs
>  Date:    2/7/02 9:08:35 PM Pacific Standard Time
>  From:    tesla-at-pupman-dot-com (Tesla list)
>  To:  tesla-at-pupman-dot-com
>  
>  Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-
> qwest-dot-net>" <weazle-at-hurontel.on.ca>
>  
>  
>  Hello Coilers,
>  
>  To quote a post from earlier today:
>  
>  >
>  >It's a small, cubish (about 6x6") 120VAC to 10kV/23mA transformer. The 
name 
> 
>  >"Obit" (actually O.B.I.T.) comes from Oil Burner Ignition Transformer, as 
>  >this is what they are designed for. They are commonly found on old 
furnaces 
> 
>  >that burn oil (and I've seen them on large gas-fired boilers a few times 
as 
> 
>  >well). They are freakishly delicate and don't last long, furtunately they'
> re 
>  >cheap and abundant if you know where to look. They are the only step down 
>  >from a standard NST, and not nearly as rugged (NSTs are fairly delicate 
as 
>  >it is), they do have the benefit of being internally current limited.
>  >
>  
>  I beg to differ about them being delicate!  I've run them on my number
>  one and two coils for many years with only ever having blown one, even
>  when abused by having a resonant cap!!  Mind you, I ALWAYS use a Terry
>  filter and properly set safety gaps which likely is responsible for my
>  set of OBITs having a long life.  I have run as many as 6 in parallel
>  with no problems whatsoever.
>  
>  73, Weazle, VE3EAR/VE3WZL
>  
>  Listening: 147.030+ and 442.075+
>  E-mail:    weazle-at-hurontel.on.ca
>             or ve3ear-at-rac.ca
>  Web site:  http://www.hurontel.on.ca/~weazle