Original poster: Steve Ward <steve.ward@xxxxxxxxx>
I hope i dont step on any toes, but i will give a go at setting some
basic definitions for terms used to describe the operation of DRSSTCs.
The possible modes of operation just confuse everyone when people try
to talk about them, hopefully this will help clear it up. If anyone
opposes anything i define here, please make your suggestions, im
The real problem comes in when we operate a DRSSTC in "burst" mode,
hopefully these few defined terms below will clear it up ;-).
*Bang: 1 complete exitation period where the primary and secondary
voltages ring up to the desired levels. A bang typically lasts
30-300uS, usually 5-50 RF cycles. This period of time is typically
derived by the "impedance" of the primary circuit which defines the
steepness of the primary ring-up (and thus the RF cycles required to
reach desirable results). A slower ring-up typically requires more RF
*Burst: A group of bangs followed by a longer rest period. Example,
the controller may fire off 10 bangs at 1mS between each bang, but
then 30mS before the next train of bangs are sent out. The resulting
sound output from the coil is: "beeep!".. "beeep!".. "beeep!" like an
alarm clock from hell.
Note: Normal DRSSTC operation produces just a solid tone defined by
the BPS, exactly like a rotary spark gap TC.
*BPS: BANGs per second.
*Burst Rate: the rate at which bursts are generated, given in per seconds.
BPS and Burst Rate are independent. Example: a DRSSTC could run with
a BPS of 600, but a burst rate of 30.
Comments and questions are welcome.