I have built an LM555 timer which produces 5V output pulses at output with time period in millisec range. This 5V pulse i will be connecting to my amplifier to obtain voltage pulses of 250V as well as current pulses of 40mA. I realize that the due to millisec time period, di/dt or dv/dt will be high which might cause problems. A high di/dt might induce a back emf and damage my amplifier. Are my thoughts correct? If so, how to protect my expensive amplifier from a high di/dt or dv/dt?