Tunah chuan touch screen mobile phone tam zawk chu .Capacitive touch screen a awm bawk.. Mobile phone charger hian ke pahnih a nei a, chu chu ground wire tak tak a awm lo tihna a ni a, chu chu lei nen hian a inang lo hle! Hei hian charger-a common mode noise a siam a (noise chu positive leh negative chu a lam khatah a awm a, a danglamna chu a inang vek a ni), chu chuan capacitance value hmuhchhuahna a nghawng a ni. A control chip chu a .Touch screen a ni a .Noise nge human operation. . tih hi a thliar hrang thei lo tih i zawhna chu:
1. Leilung nen hian common ground awm lo mah se, electrical appliances hnathawh chu differential mode voltage chu a normal theih nan chauh a ngai a ni. Common mode voltage hian common mode voltage chu volt sang tam takah a drift a nih pawhin a nghawng lo ang (a nihna takah chuan a drift nasa thei hle mai!), circuit thenkhatah chuan tihsual tenau leh common common common tha lo tak tak mamawh, capacitive touch ang chi te hian nghawng a nei ang a, resistive te pawh a tha zawk ang.
2. Charger tha tak hmang la, chu bakah chuan anti-noise ability of the .Capacitive touch screen a awm bawk.. Tunah hian company thenkhat pawhin heng harsatnate hi chinfel tumin hma an la mek bawk.
3. Phone chhunga chip zawng zawng ground chu a awm dun a .
