各种电子元件符号大全.doc

各种电子元件符号大全 各种电子元件符号 稳压二极管 变容二极管 普通的二极管 双向触发二极管 表示符号:ZD,D 表示符号:D 表示符号:D 表示符号:D 稳压二极管 注:单向型 TVS瞬态电压抑制二极 桥式整流二极管 管也是这个符号表示符肖特基二极管 隧道二极管 表示符号:D 号:ZD,D 光敏二极管或光电接发光二极管 双色发光二极管 隧道二极管 收二极管 表示符号:LED 表示符号:LED 光敏三极管或光电接收单结晶体管,双基极二NPN型三极管 复合三极管 三极管 极管, 表示符号:Q,VT 表示符号:Q,VT 表示符号:Q,VT 表示符号:Q,VT 带阻尼二极管NPN型 PNP型三极管 PNP型三极管 NPN型三极管 三极管 表示符号:Q,VT 表示符号:Q,VT 表示符号:Q,VT 表示符号:Q,VT lifting the plug, drainage should be discharged quickly. Close the mouth immediately after shutting the water flow, water seeping in around the faucet without; check the Flushing apparatus sensitivity and reliability. 2 water debug each of the pump motor in the pumping station through the emergency stop button to stop running tests each drain pump starts and automatically selected alternate. 3 devices in the drainage system drainage systems, pipes and accessories for drainage open, smooth gravity flow, siphon rainwater drainage system, meet the design specification. 5.4.2.2 test all drain water drain water test after installation according to the design requirements. Individual days or as piped irrigation Rainwater of the canopy height must each riser at the top of the rain pipe. Fee for concealed or buried drainage pipe irrigation experiment needs to be done before the hidden, the height shall be not less than the lower ground level of irrigation, water after 15 minutes, and then filled the last 5 minutes, if the liquid level does not drop that is qualified. 5.4.2.3 health apparatus water test all the health apparatus installed must be 24 hour water test. Hold water: toilet high tank filled as required; each kind of wash basin, lavatory, laboratory basin should be filled to overflow water pan, MOP, sink at least deep two-thirds; bath of one-third cylinder deep. Test results to sanitary appliances not leakage is qualified. Project quality management section engineering code for construction and acceptance of quality objectives to meet the national, both of the bidding documents and drawings with brilliant c