A method of operating a pulse generator circuit configured to apply a current pulse to a load, wherein said pulse generator circuit comprises: - a positive and a negative input terminal for receiving a supply voltage (Vcc); - two output terminals (204, 206) for providing said current pulse to said load; - an LC resonant circuit (Lr, Cr) comprising an inductance (Lr) and a capacitance (Cr) connected in series between a first node and said negative input terminal, wherein said LC resonant circuit (Lr, Cr) has a given resonant period ( Tr); - a charge circuit configured to charge said capacitance (Cr) via said supply voltage (Vcc); - a first electronic switch connected between said two output terminals (204, 206) and configured to selectively short-circuit said two output terminals (204, 206) as a function of a first drive signal; and - a second electronic switch configured to selectively connect said two output terminals (204, 206) in parallel with said LC resonant circuit (Lr, Cr) as a function of a second drive signal; wherein the method comprises generating said first and said second drive signals in order to repeat the following steps during each switching cycle of a sequence of switching cycles: - for a first time-interval ( T 1) close said first electronic switch and open said second electronic switch, wherein said two output terminals (204, 206) are disconnected from said LC resonant circuit (Lr, Cr) and said LC resonant circuit (Lr, Cr) is charged via said charge circuit; - for a following second time-interval (T 2) close said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said two output terminals (204, 206) are short-circuited, whereby said LC resonant circuit (Lr, Cr) oscillates with said given resonant period ( Tr); - for a following third time-interval (T 3, T ON) open said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said LC resonant circuit (Lr, Cr) provides a current ( i Cr) to said two output terminals (204, 206); and - for a following fourth time-interval ( T 4) close said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said two output terminals (204, 206) are short-circuited, whereby said LC resonant circuit (Lr, Cr) oscillates with said given resonant period ( Tr). - a positive and a negative input terminal for receiving a supply voltage (Vcc); - two output terminals (204, 206) for providing said current pulse to said load; - an LC resonant circuit (Lr, Cr) comprising an inductance (Lr) and a capacitance (Cr) connected in series between a first node and said negative input terminal, wherein said LC resonant circuit (Lr, Cr) has a given resonant period ( Tr); - a charge circuit configured to charge said capacitance (Cr) via said supply voltage (Vcc); - a first electronic switch connected between said two output terminals (204, 206) and configured to selectively short-circuit said two output terminals (204, 206) as a function of a first drive signal; and - a second electronic switch configured to selectively connect said two output terminals (204, 206) in parallel with said LC resonant circuit (Lr, Cr) as a function of a second drive signal; - for a first time-interval ( T 1) close said first electronic switch and open said second electronic switch, wherein said two output terminals (204, 206) are disconnected from said LC resonant circuit (Lr, Cr) and said LC resonant circuit (Lr, Cr) is charged via said charge circuit; - for a following second time-interval (T 2) close said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said two output terminals (204, 206) are short-circuited, whereby said LC resonant circuit (Lr, Cr) oscillates with said given resonant period ( Tr); - for a following third time-interval (T 3, T ON) open said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said LC resonant circuit (Lr, Cr) provides a current ( i Cr) to said two output terminals (204, 206); and - for a following fourth time-interval ( T 4) close said first electronic switch and close said second electronic switch, wherein said two output terminals (204, 206) are connected in parallel with said LC resonant circuit (Lr, Cr) and said two output terminals (204, 206) are short-circuited, whereby said LC resonant circuit (Lr, Cr) oscillates with said given resonant period ( Tr).