My Dear Friends, Its a simple circuit (but its beyond my head!!! hehe!) Please see the diagram: Here through AB supply is given. C is a capacitor for charging and then discharging at the load end. e-S/W is an electronic switch (I need the circuit for this switch) which when pressed, discharge the energy from the capacitor (just like a triggering action), but the electronic switch MUST NOT consume any power from the circuit, so that the amount of chraged energy equals the amount of discharging energy! Requirement: (for this whole circuit) 1) about 10-20J energy; 2) Voltage ~ 200V; 3) Current ~ 5A. ACTUALLY WHAT NEED IS: I need to know the exact amount of energy charged to the capacitor and the exact amount of energy discharged at the load end. I need your HELP, friends ! Can you suggest any electronic switch circuit for the above? If u need any data may post here OR pm me.