CHARGING SYSTEM HAVING POWER SUPPLY DELAY CIRCUIT

PROBLEM TO BE SOLVED: To obtain a charging system having a power supply delay circuit.SOLUTION: A charging system is provided, on the power supply device side, with a power supply delay circuit for preventing spark that may be generated when connecting the power supply device for supplying power to an electronic apparatus requiring a relatively large current supply. When a GND ground power terminal and a D signal terminal are not in an electrical short circuit state, the power supply delay circuit interrupts power supply to a Vcc power terminal, and when the GND ground power terminal and the D signal terminal are in an electrical short circuit state, operation of a transistor is changed, and interruption of power supply to the Vcc power terminal is released when the charged state of a capacitor is changed. 【課題】本発明は、電力供給遅延回路を有する充電システムに関する。【解決手段】比較的大きい電流の供給が必要な電子機器に電力を供給するために電力供給装置を接続させる際に発生し得るスパークを防止する電力供給遅延回路が電力供給装置側に設けられる充電システムを提供する。前記電力供給遅延回路は、ＧＮＤ接地電力端子とＤ信号端子が電気的に短絡状態ではないとき、Ｖｃｃ電力端子への電力供給を遮断し、ＧＮＤ接地電力端子とＤ信号端子が電気的に短絡状態になったとき、前記トランジスタの動作が変更されて前記キャパシタの充電状態が変更されるとＶｃｃ電力端子への電力供給の遮断が解除される。【選択図】図３