A voltage monitoring circuit (4) detects when the output battery of a power source (e.g., battery) falls below a predetermined reference voltage. A controller (3), in response to the monitoring circuit, performs a load operation. In the load operation, a switch (8-1) in a pseudo-load circuit 8 is operated...http://www.google.ca/patents/US5969529?utm_source=gb-gplus-sharePatent US5969529 - Electronic apparatus having battery power source
