US Patent 7111586 Intensity variation device for training animals

An apparatus for an animal training device including audible and electrical stimulation. A transmitting unit provides control signals to a receiving unit, which includes a receiver, a processor, and a switch connected to a transformer and electrodes. The processor provides signals that result in varying voltages that produce electrical pulses of varying voltage levels, which are applied at the electrodes and provide electrical stimulation of an animal for training.