Usually charging resistance Rs is chosen to limit the charging current to about 50 to 100 mA while the generatorcapacitance C is chosen such that the product CRs is about to 10s to 1 minute. The discharge time constant CR1/n (for nstages) will be too small (microseconds), compared to the charging time constant CRs which will be few seconds.Impulse generators are nominally rated by the total voltage (nominal), the number of stages and the gross energy stored.The nominal output voltage is the number of stages multiplied by the charging voltage [5]. The nominal energy stored isgiven by: