L7912CV-DG by STMicroelectronics Design and production,in GUI XIN Group (Hong Kong) Limited Spot sales,And can pass GUI XIN Group (Hong Kong) Limited Purchasing。L7912CV-DG Price reference $ 0.854000。L7912CV-DG - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L7912CV-DG Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial