Patent ID: 8633676
Filing Date: 2014-01-21
Classification: H02H,H02J

Abstract:
1. A charging status display circuit used in an electronic device, the electronic device comprising a power supply circuit, a rechargeable battery, and an interface circuit capable of electrically connecting with the rechargeable battery, the electronic device powered by either the power supply circuit or the rechargeable battery, the rechargeable battery charged by the power supply circuit via the interface circuit, the charging status display circuit connected between the power supply circuit and the interface circuit comprising: a light emitting diode for indicating whether the rechargeable battery is being charged, the light emitting diode connected between the power supply circuit and the interface circuit; and a surface-contact diode for clamping a voltage between the light emitting diode and the interface unit at a predetermined value when the rechargeable battery connects with the interface circuit, the surface-contact diode and the light emitting diode connected in parallel between the power supply circuit and the interface circuit.