Abstract: An animal is trained using a remote transmitter and a collar-mounted receiver carried by the animal by selecting one of a plurality of desired stimulus levels by a stimulus level control of the transmitter. Information representative of the selected desired stimulus level is transmitted to the receiver and demodulated to produce a digital signal representative of the selected stimulus level. A microprocessor in the receiver operates to generate as an output a first stream of pulses of constant duration at a frequency representative of the selected stimulus level. The first stream of output pulses is filtered to produce a second stream of pulses the widths of which are representative of the selected stimulus level.

Abstract: A leash training device includes a leash cord (3) and a stimulus collar (4,6) coupled to an end of the leash cord. The stimulus collar includes a strap (4) adapted to fit around the neck of an animal to be trained or controlled, and an electrical stimulus unit (6) supported by the strap. The electrical stimulus unit (6) includes a stimulus circuit (16). A transformer (17) coupled between the stimulus circuit (16) and a pair of electrodes (5) for contacting skin of the animal. A measurement device (101) is coupled to the leash cord to measure tension in the leash cord and produce a control signal (106) when the tension exceeds a predetermined threshold. The stimulus circuit (16) produces a drive signal in response to the control signal and applies the drive signal to a primary winding of the transformer (17).

Abstract: A device for uniformily distributing current and voltage comprises first and second terminals, a first electrical bus electrically connected to the first terminal, a second electrical bus electrically isolated from the first electrical bus and electrically connected to the second terminal, a plurality of electrical components connected between the first and second buses so as to form a plurality of circuit paths of equal length, each circuit path running between the first terminal, the first electrical bus, one of the circuit components, the second electrical bus, and the second terminal. The plurality of electrical components are connected to the first and second buses at locations which are equidistant from the first and second terminals, respectively.