An electronic containment system for use with animals and/or humans. The system includes a transmitter for transmitting a radio signal, a receiver for receiving the radio signal from the transmitter and a deterrent circuit including a switched capacitor power supply for administering a deterent responsive...http://www.google.de/patents/US6201477?utm_source=gb-gplus-sharePatent US6201477 - Switched capacitor power supply for an electronic animal containment system
