721
edits
No edit summary |
No edit summary |
||
(One intermediate revision by the same user not shown) | |||
Line 12: | Line 12: | ||
[http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Av+-112+16+-112+-64+0+2+10+5+0+0+0.5%0Ax+-208+68+64+71+4+12+Capacitors%5Csstore%5Cscharge%5Csover%5Csa%5Cscertain%5Cstime%5Csspan.%5Cs%0Ax+-95+-157+0+-154+4+20+Capacitors%0Aw+-208+16+-112+16+0%0Aw+-112+16+32+16+0%0Ar+32+16+32+-64+0+1000%0Ac+-112+-64+32+-64+0+0.000002+-4.9914229719235905%0Ap+96+-64+96+16+1+0%0Aw+32+-64+96+-64+0%0Aw+32+16+96+16+0%0Ap+-208+-64+-208+16+1+0%0Aw+-208+-64+-112+-64+0%0Ax+-208+142+189+145+4+12+In%5Csa%5Csreal-world%5Csscenario%5Csthey%5Cswill%5Csalways%5Csdischarge%5Csbecause%5Csof%5Csleackage.%5Cs%0Ax+-209+93+221+96+4+12+The%5Csamount%5Csof%5Cscharge,%5Csthey%5Cscan%5Cshold,%5Csdepends%5Cson%5Cstheir%5Cssize%5Csgiven%5Csin%5CsFarads%5Cs(F).%0Ax+-209+116+188+119+4+12+The%5Csbigger%5Cstheir%5Cscapacity%5Cs(F),%5Csthe%5Cslonger%5Csthey%5Csneed%5Csto%5Cscharge%5Csor%5Csdischarge.%0Ax+-208+171+287+174+4+12+In%5Csa%5Cscircuit%5Cstheir%5Cscharge%5Csand%5Csdischarge%5Cstimes%5Csare%5Cscontrolled%5Cswith%5Csa%5Csseries%5Csor%5Csparallel%5Csresistor.%0Ao+10+8+0+4098+5+0.1+0+1%0Ao+6+8+0+4098+5+0.1+1+2+6+3%0Ao+7+8+0+4098+10+0.1+2+1%0A Capacitors] | [http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Av+-112+16+-112+-64+0+2+10+5+0+0+0.5%0Ax+-208+68+64+71+4+12+Capacitors%5Csstore%5Cscharge%5Csover%5Csa%5Cscertain%5Cstime%5Csspan.%5Cs%0Ax+-95+-157+0+-154+4+20+Capacitors%0Aw+-208+16+-112+16+0%0Aw+-112+16+32+16+0%0Ar+32+16+32+-64+0+1000%0Ac+-112+-64+32+-64+0+0.000002+-4.9914229719235905%0Ap+96+-64+96+16+1+0%0Aw+32+-64+96+-64+0%0Aw+32+16+96+16+0%0Ap+-208+-64+-208+16+1+0%0Aw+-208+-64+-112+-64+0%0Ax+-208+142+189+145+4+12+In%5Csa%5Csreal-world%5Csscenario%5Csthey%5Cswill%5Csalways%5Csdischarge%5Csbecause%5Csof%5Csleackage.%5Cs%0Ax+-209+93+221+96+4+12+The%5Csamount%5Csof%5Cscharge,%5Csthey%5Cscan%5Cshold,%5Csdepends%5Cson%5Cstheir%5Cssize%5Csgiven%5Csin%5CsFarads%5Cs(F).%0Ax+-209+116+188+119+4+12+The%5Csbigger%5Cstheir%5Cscapacity%5Cs(F),%5Csthe%5Cslonger%5Csthey%5Csneed%5Csto%5Cscharge%5Csor%5Csdischarge.%0Ax+-208+171+287+174+4+12+In%5Csa%5Cscircuit%5Cstheir%5Cscharge%5Csand%5Csdischarge%5Cstimes%5Csare%5Cscontrolled%5Cswith%5Csa%5Csseries%5Csor%5Csparallel%5Csresistor.%0Ao+10+8+0+4098+5+0.1+0+1%0Ao+6+8+0+4098+5+0.1+1+2+6+3%0Ao+7+8+0+4098+10+0.1+2+1%0A Capacitors] | ||
* In printed electronics, we use capacitors to detect the presence of fingers by a change in capacitance | * In printed electronics, we use capacitors to detect the presence of fingers by a change in capacitance | ||
[http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Av+-112+16+-112+-64+0+2+400+5+0+0+0.5%0Ax+-208+68+-1+71+4+12+Fast%5Cssignals%5Cspass%5Csthrough%5Cscapacitors!%0Ax+-206+-135+-34+-132+4+20+Capacitive%5CsSensors%0Aw+-112+16+32+16+0%0Ar+32+16+32+-64+0+1000%0Ac+-112+-64+32+-64+0+1e-9+-5%0Ax+-211+145+340+148+4+12+When%5Cswe%5Csapproach%5Csthis%5Csplate%5Cswith%5Csour%5Csfingers,%5Csit%5Csforms%5Csa%5Cssecond%5Csplate%5Csand%5Csincreases%5Csthe%5Cscapacitance,%0Ax+-209+93+213+96+4+12+The%5Csamplitude%5Csof%5Csthe%5Cssignal%5Csthat%5Cspasses,%5Csdepends%5Cson%5Csthe%5Cssize%5Csof%5Csthe%5Cscapacitor.%0Ax+-209+116+141+119+4+12+With%5Cscapacitove%5Cssensors,%5Cswe%5Csprint%5Csonly%5Csone%5Csplate%5Csof%5Csthe%5Cscapacitor.%0Ax+-208+171+95+174+4+12+which%5Csin%5Csturns%5Csamplifies%5Csthe%5Cssignal%5Csthat%5Cspasses%5Csthrough.%0Ax+-208+197+71+200+4+12+We%5Cscan%5Csmeasure%5Csthis%5Cssignal%5Cswith%5Csa%5Csmicro%5Cscontroller!%0Ao+0+8+0+4098+5+0.1+0+2+0+3%0Ao+4+8+0+4098+5+0.1+1+2+4+3%0A Capacitive Sensors] | |||
* Here is a circuit for driving an LED: | |||
[http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Ar+-240+-48+-144+-48+0+100%0Av+-240+32+-240+-48+0+0+40+5+0+0+0.5%0A370+-64+-48+-64+32+1+0%0Ax+-315+101+405+104+4+12+For%5Csdriving%5Csan%5CsLED%5Cswithout%5Csdestroying%5Csit,%5Csyou%5Csneed%5Csto%5Csadd%5Csa%5Csseries%5Csreistor%5Cs(R).%5CsTo%5Cscalculate%5Csthe%5Cscorrect%5Csresistance,%5Csuse%5Csthe%5Csformula%5Csabove!%0Ax+41+-55+160+-52+4+18+R%5Cs%5Cq%5Cs(Vs%5Cs-%5CsVf)%5Cs/%5CsI%0Aw+-240+32+-240+48+0%0Aw+-240+48+-64+48+0%0Aw+-64+48+-64+32+0%0Ap+-304+-48+-304+48+1+0%0Aw+-304+48+-240+48+0%0Aw+-304+-48+-240+-48+0%0Ax+-88+-159+33+-156+4+18+Driving%5Csan%5CsLED%0Ad+-144+-48+-64+-48+2+old-default-led%0Ap+-144+-96+-64+-96+1+0%0Aw+-144+-96+-144+-48+0%0Aw+-64+-96+-64+-48+0%0Aw+-240+-48+-240+-96+0%0Ap+-240+-96+-144+-96+1+0%0Ax+43+-23+185+-20+4+12+Vs%5Cs...%5Csvoltage%5Csof%5Csthe%5Cssource%0Ax+44+6+332+9+4+12+Vf%5Cs...%5Csforward%5Csvoltage%5Csdrop%5Csof%5Csthe%5CsLED%5Cs(from%5Csdatasheet)%0Ax+45+32+434+35+4+12+I...%5Csdesired%5Cscurrent%5Csthrough%5CsLED%5Cs(below%5Csmaximum%5Cscurrent%5Csfrom%5Csdatasheet)%0Ao+2+64+0+4099+0.0000762939453125+0.1+0+2+2+3%0A LED circuit] |