ï¼1ï¼éçæ³æ¨¡åæ¶ï¼è®¾äºæ管æ£å管åé为0.7Vã
ï¼2ï¼å¾ï¼bï¼ä¸å·²ç»ç»åºæ¥äºï¼ä¸å¨è§£çã
æ¤æ¶ï¼å½ui<3Væ¶ï¼äºæ管æªæ¢ï¼u0å³ä¸ºuiç波形ï¼å½ui>3Vï¼äºæ管导éï¼è¾åºu0被éå¹ å¨UREF=3Vççµåè¾åºã