On 04/02/2018 23:48, Ed wrote:
I've looked at the various replies and it seems to me that no one has noticed your remark "the caps can now discharge back through my NST secondary via the tesla coil primary coil as all are in series".
Gary replied to it.
If I am interpreting this correctly this means that the spark gap is in series with the capacitor so there will be no closed path when the power is off and the capacitor[s] can remain charged to the spark gap breakdown voltage. If the capacitor is in parallel with the NST secondary and only the spark gap and coil primary are in series across the two then the primary will indeed discharge the capacitor in a few milliseconds.The standard circuit most coilers used is the one enclosed where the cap can discharge back through the NST,Ed
but as Gary mentioned if the NST is open circiuit then thjey will not.
On 2/4/2018 5:28 AM, Albert wrote:Hello all, my first posting .... I am building a standard tesla coil (NST, 15kv at 30 m/a etc)When working, if I switch off when the caps are charged but the spark gap hasn't yet fired,(say they are charged to 10kv), than the caps can now discharge back through my NST secondaryvia the tesla coil primary coil as all are in series. My NST secondary resistance measures 20k ohms. So 10kv is putacross this equating to 1/2 AMP !!. Can the NST fine secondary windings take this continually?Also as the caps discharge quickly via the NST anyway,do I need bleed resistors across the caps?(4 doorknobs in parallel) Thanks. _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla
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