In the matrix display drive circuit with an energy recovery inductor (L1),
a switch circuit (S3, D3, S6, d9) is connected in parallel
with the inductor (L1) to keep the inductor current (TL1) in a loop
which is as small as possible, and to keep the voltage (VL1) across the
inductor (L1) as low as possible. Consequently, the energy stored in the
inductor is lower, and the EM1 caused by the parasitic resonance of the
inductor (L1) with parasitic capacitances Cj will be significantly lower.
