An electric circuit arrangement and a method for generating electric current pulses to a load, the electric circuit arrangement including a switch and a current source in series connection with the load; wherein the switch is arranged to operate in at least an on state and an off state, thereby selectively connecting or disconnecting the current source to or from the load so as to generate the electric current pulses. With such architecture, the circuit performs with a better efficiency than a cascaded architecture.

An electric circuit arrangement and a method for generating electric current pulses to a load, the electric circuit arrangement including a switch and a current source in series connection with the load; wherein the switch is arranged to operate in at least an on state and an off state, thereby selectively connecting or disconnecting the current source to or from the load so as to generate the electric current pulses. With such architecture, the circuit performs with a better efficiency than a cascaded architecture.