Patent ID: 8711544

Claim:
A remote-receiving circuit ( 1 ) for providing and controlling an electric stimulus applied to an animal, the circuit ( 1 ) comprising: an isolated DC/DC converter ( 4 ) having a low voltage input powered by an energy source ( 3 ) and a high voltage output connected to a storage capacitor ( 8 ) suitable to be charged with stimulus energy by said converter ( 4 ); a first electrode ( 5 ) and a second electrode ( 6 ) configured to be in contact with the animal for delivering to it high voltage stimulus current and connected to the respective ends of said storage capacitor ( 8 ); a high-voltage current-limiting circuit ( 9 ) connected in series with the storage capacitor ( 8 ) to control the stimulus current delivered to the animal through the electrodes ( 5 , 6 ), said high-voltage current-limiting circuit ( 9 ) comprising at least a resistor ( 9 B) in series with a switching transistor ( 9 A), so that in a first phase, the isolated DC/DC converter ( 4 ) charges the storage capacitor ( 8 ) to a high voltage, while the current-limiting circuit ( 9 ) limits to zero the stimulus current delivered to the animal through the first and second electrodes ( 5 , 6 ); and in a second phase, while the storage capacitor ( 8 ) is discharging, the current-limiting circuit ( 9 ) generates a low-frequency pulsed stimulus current delivered to the animal through the first and second electrodes ( 5 , 6 ), said current being controlled in duration, peak amplitude and shape.