| 摘要 |
A battery charging circuit includes a thermostat sensing the temperature of the battery as it is charged, a silicon controlled rectifier which when conductive enables charging of the battery and when non-conductive prevents charging of the battery, and a transistor which renders the silicon controlled rectifier non-conductive when the temperature of the battery reaches a predetermined level corresponding to complete charging and is adapted to render the silicon controlled rectifier conductive responsive to a temperature of the battery below the predetermined temperature. When the temperature of the battery is lowered below the predetermined level after the battery has been completely charged, the transistor is rendered non-conductive to ensure that the silicon controlled rectifier is not brought again to the conductive state.
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