S9018 is NPN canal, s8550 is PNP canal; The diagnostic frequency of S9018 is 600MHz, s8550 is 150MHz; The Vceo of S9018 is 18V, s8550 is 25V. Main distinction is above these.
PNPDynatronMake crural plan
Stick a PNP dynatron to make crural plan
It is to stick a PNP dynatron dimension above, pin order 1.base is base, 2.EMITTER is to blast off extremely, 3.COLLECTOR is collector.
All sorts of 2. diode picture
74LS04 is 6 blame door (inverter) his working voltage 5V, his interior contains 6 Coms inverter, the action of 74LS04 is turned over namely 1 become 0, at ordinary times in use notices the pin order that does not want chip makes a mistake please, the pin that chip is below pursues.
74ls04 makes crural plan
74LS04 is a number control switch chip is simple for inside it is a fewElectronSwitch circuit controls in-house switch state by exterior signal, the effect that control colored lantern shines by the order that set and destroys has in festal colored lantern.