Pulsed charging of a capacitance C_l from an LC circuit with a fast exploding-wire current interruptor is investigated by physical modeling and magnetohydrodynamic calculations. It is shown that the efficiency of energy transfer to the load is highest in the matched-explosion mode h_e/h₀=1. The energy density injected into the conductor by the time C_l is connected should be equal to the sublimation energy of the metal. With these and other defining conditions, the voltage U_l across the load is given naturally by the capacitance ratio, U_l/U₀=K=0.73(C/C_l). An overvoltage K=4–6.6 was actually obtained at an energy-transfer efficiency of ≅0.5.