[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

*To*: tesla-at-pupman-dot-com*Subject*: Re: [Fwd: Spark gap not firing]*From*: "Tesla list" <tesla-at-pupman-dot-com>*Date*: Sat, 10 Feb 2001 19:58:25 -0700*In-Reply-To*: <3A85DAEF.548B71F5-at-videotron.ca>*References*: <4.1.20010210153438.00a3d018-at-pop.dnvr.uswest-dot-net>*Resent-Date*: Sat, 10 Feb 2001 20:03:43 -0700*Resent-From*: tesla-at-pupman-dot-com*Resent-Message-ID*: <C8QDCB.A.R_E.LEgh6-at-poodle>*Resent-Sender*: tesla-request-at-pupman-dot-com

Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net> Hi Luc, That should be fine. It will really knock down the Fo and it will definitly knock out the really high frequncy burst when the gap starts to conduct. Fc is 50kHz in your case. Cheers, Terry At 07:21 PM 2/10/2001 -0500, you wrote: >Hi Ed, Terry, list > >Tx guy for your help. Just to verified if I understand well: If I want a >cutoff frequency of 50 >KHz and I use a resistance of 2 Kohms I need a cap of 1.59 nF. If I use less >resistance and >more capacitance for the same value in the equation is the curve: frequency >to db attenuation >will be stepper ? If my coil have a resonant F of 100 KHz is this filter >good or I'll need a >cutoff F lower . > >Luc Benard > >Tesla list wrote: > >> Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-uswest-dot-net>" ><evp-at-pacbell-dot-net> >> >> >> >> The expression for the half-power cutoff frequency of a low pass RC >> filter is simply >> >> Fc = 1/(2*pi*R*C) >> >> where Fc is in Hz at which the output voltage/input voltage ratio is >> 0.707 [1/sqrt(2)] , R is in ohms, and C is in farads. This applies to >> the simplified case of a filter between a zero-impedance source and an >> infinite impedance load. In the case of such a filter inserted between a >> TC primary circuit and a transformer, things may not be quite so simple. >> >> Ed >

**References**:**Re: [Fwd: Spark gap not firing]***From:*"Tesla list" <tesla-at-pupman-dot-com>

- Prev by Date:
**Re: Diluting Epoxy (for a secondary coat)** - Next by Date:
**Sync motor for sale/trade** - Prev by thread:
**Re: [Fwd: Spark gap not firing]** - Next by thread:
**Re: [Fwd: Spark gap not firing]** - Index(es):