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IFD:Analog Circuits and Interfaces/introduction to electronics (view source)
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* The foundation of understanding electric circuits is Ohm's law. | * The foundation of understanding electric circuits is Ohm's law. | ||
[http://tinyurl.com/y579oadd Ohm's Law] | [http://tinyurl.com/y579oadd Ohm's Law] | ||
* We can calculate series and parallel resistances with Ohm's law: | |||
[http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+45.7144713268909+50+5+43%0Ax+-483+108+-368+111+4+16+R_tot%5Cs%5Cq%5CsR1%5Cs%5Cp%5CsR2%0Ax+-469+-262+-224+-259+4+18+Series%5Csand%5CsParallel%5CsResistance%0Ax+-483+57+-330+60+4+12+Series%5CsResistances%5Csadd%5Csup!%0Ax+-501+-140+-485+-137+4+12+R1%0Ax+-500+-53+-484+-50+4+12+R2%0Ar+-464+-96+-464+16+0+1000%0Ar+-464+-192+-464+-96+0+1000%0A216+-400+16+-400+-192+0+0.01%0Aw+-400+-192+-464+-192+0%0Aw+-464+16+-400+16+0%0Aw+-96+16+-16+16+0%0Aw+-16+-192+-96+-192+0%0A216+64+16+64+-192+0+0.01%0Ar+-176+-192+-176+16+0+1000%0Ar+-96+-192+-96+16+0+1000%0Ax+-134+-84+-118+-81+4+12+R2%0Ax+-216+-86+-200+-83+4+12+R1%0Ax+-181+55+48+58+4+12+Parallel%5CsResistances%5Cshave%5Csan%5Csinverse%5Cslaw:%0Ax+-177+104+132+107+4+16+1%5Cs/%5CsR_tot%5Cs%5Cq%5Cs1/R1%5Cs%5Cp%5Cs1/R2%5Cs%5Cp%5Cs1/R3%5Cs%5Cp%5Cs...%5Cs%5Cp%5Cs1/R_n%0Aw+-176+-192+-96+-192+0%0Aw+-176+16+-96+16+0%0Ar+-16+-192+-16+16+0+1000%0Aw+-16+-192+64+-192+0%0Aw+-16+16+64+16+0%0Ax+-50+-84+-34+-81+4+12+R2%0A series and parallel resistances] | |||
* A very powerful concept is the voltage divider, it allows us to attenuate (but not amplify!) any voltage in any circuit | * A very powerful concept is the voltage divider, it allows us to attenuate (but not amplify!) any voltage in any circuit | ||
[http://tinyurl.com/yxhsk8sc voltage divider with even resistors] | [http://tinyurl.com/yxhsk8sc voltage divider with even resistors] | ||