| US 7,482,712 B2 | ||
| DC power supply with input voltage polarity indication | ||
| Timothy Ford, Beaconsfield (Canada); and Stephane Gascon, Mascouche (Canada) | ||
| Assigned to The Flewelling Ford Family Trust, Beaconsfield (Canada) | ||
| Filed on Sep. 15, 2005, as Appl. No. 11/227,388. | ||
| Application 11/227388 is a division of application No. 10/692294, filed on Oct. 23, 2003, granted, now 7,023,004. | ||
| Prior Publication US 2006/0061347 A1, Mar. 23, 2006 | ||
| Int. Cl. H02B 1/24 (2006.01) | ||
| U.S. Cl. 307—127 [363/142] | 7 Claims |
| 1. A power supply for supplying DC power to an electronic circuit comprising at least one microcontroller, the supply comprising:
a battery comprising a positive terminal and a negative terminal;
a battery receiving compartment; and
a power conversion circuit comprising first and second terminals and a power output for supplying power to the electronic
circuit;
wherein when said battery is placed within said compartment in a first orientation said positive terminal is in contact with
said first terminal and said negative terminal is in contact with said second terminal and a positive power from said battery
is supplied to the electronic circuit together with an indication to the microcontroller of the positive polarity of the voltage
between said first and second terminals and wherein when said battery is placed within said compartment in a second orientation
said positive terminal is in contact with said second terminal and said negative terminal is in contact with said first terminal
and a positive power from said battery is supplied to the electronic circuit together with an indication to the microcontroller
of the negative polarity of the voltage between said first and second terminals.
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