e172ece
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« on: April 09, 2010, 08:58:58 PM » |
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bakit walang positive and negative ang a.c. sa d.c. may positive and negative ?
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« on: April 09, 2010, 08:58:58 PM » |
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Ugin
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« Reply #1 on: April 09, 2010, 09:23:14 PM » |
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bakit walang positive and negative ang a.c. sa d.c. may positive and negative ?
Actually meron, mabilis lang ang transistion from positive to negative (60 Hz and frequency) |
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ptolemy
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« Reply #2 on: April 09, 2010, 09:25:11 PM » |
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parang labo nung tanung.. o bka ang tanong dapat ay kung bakit walang ac component ang dc?
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rdpzycho
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« Reply #3 on: April 09, 2010, 09:32:51 PM » |
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simply because, it's alternating. on one cycle, one node is positive with respect to the other node, and reverses on the next cycle.
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e172ece
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« Reply #4 on: April 09, 2010, 09:48:00 PM » |
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parang labo nung tanung.. o bka ang tanong dapat ay kung bakit walang ac component ang dc?
sorry po bakt sa dc merong positive and negative sa ac wala?baliktad pagkagawa ko sorry |
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e172ece
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« Reply #5 on: April 09, 2010, 09:50:25 PM » |
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Actually meron, mabilis lang ang transistion from positive to negative (60 Hz and frequency)
simply because, it's alternating. on one cycle, one node is positive with respect to the other node, and reverses on the next cycle.
bakit po no bearing siya , i mean kung sa dc kung baliktad un mga poles mo di gagana yun circuit /gadget/appliance, bkt sa ac okay lang kahit baliktad? |
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rdpzycho
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« Reply #6 on: April 09, 2010, 09:51:56 PM » |
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kasi mag-isa siyang nagre-reverse.
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carlsfootprints
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« Reply #7 on: April 09, 2010, 10:24:22 PM » |
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bakit po no bearing siya , i mean kung sa dc kung baliktad un mga poles mo di gagana yun circuit /gadget/appliance, bkt sa ac okay lang kahit baliktad?
tanong ko rin ito dati nung medyo bata pa ako.. ung mga electronics devices kasi operates on DC.. so mostly, kelangan nten ng converter from DC --> AC.. liban na lang sa mga resistive appliance like incandescent bulb,flatiron, ricecooker, etc.. also, ung mga motors/inductive types, like electric fan, washing machine, etc.. dagdag na rin pala nten ung mga power factor corrector na capacitive.. direkta rin sa AC source sila.. ngaun kung bakit magkaiba ang effect kapag binaligtad ang pagsaksak mo sa AC at DC.. let's have an example.. kapag ang diode, pinadaan natin ng DC tapos binaliktad ang polarity, diba magswi2tch off.. ideally off.. kapag ang electric fan, pinadaan natin ng AC tapos binaliktad natin.. ganun pa rin.. kasi nagaalternate naman talaga un.. kahit anong line pa un mauna.. |
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carlsfootprints
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« Reply #8 on: April 09, 2010, 10:26:28 PM » |
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another question may rise  bakit AC ang ginamit natin for transmission.. bakit di na lang DC.. marami rin naman tayong gamit sa bahay na dc ang kelangan like tv, pc, playstation, basta electronic.. hehe.. eto ang sagot.. http://www.greatachievements.org/?id=2992napagdebatehan pala nila un.. at napagalaman na better for transmission ang AC.. |
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never saturate..
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Mhavskie
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« Reply #9 on: April 09, 2010, 11:31:52 PM » |
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Si nikola tesla din ang nagpalaganap ng AC,
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e172ece
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« Reply #10 on: April 10, 2010, 09:53:00 AM » |
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tanong ko rin ito dati nung medyo bata pa ako..
ung mga electronics devices kasi operates on DC.. so mostly, kelangan nten ng converter from DC --> AC.. liban na lang sa mga resistive appliance like incandescent bulb,flatiron, ricecooker, etc.. also, ung mga motors/inductive types, like electric fan, washing machine, etc.. dagdag na rin pala nten ung mga power factor corrector na capacitive.. direkta rin sa AC source sila..
ngaun kung bakit magkaiba ang effect kapag binaligtad ang pagsaksak mo sa AC at DC..
let's have an example..
kapag ang diode, pinadaan natin ng DC tapos binaliktad ang polarity, diba magswi2tch off.. ideally off..
kapag ang electric fan, pinadaan natin ng AC tapos binaliktad natin.. ganun pa rin.. kasi nagaalternate naman talaga un.. kahit anong line pa un mauna..
wow i got the answer na!thanks pogi/ganda point for you kapag ang diode, pinadaan natin ng DC tapos binaliktad ang polarity, diba magswi2tch off.. ideally off.. kapag ang electric fan, pinadaan natin ng AC tapos binaliktad natin.. ganun pa rin.. kasi nagaalternate naman talaga un.. kahit anong line pa un mauna.. |
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DigitalMind
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« Reply #11 on: April 10, 2010, 09:56:01 AM » |
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Pwede din yung AC na may DC offset.
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ptolemy
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« Reply #12 on: April 10, 2010, 10:12:48 AM » |
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wow i got the answer na!thanks pogi/ganda point for you
kapag ang diode, pinadaan natin ng DC tapos binaliktad ang polarity, diba magswi2tch off.. ideally off..
kapag ang electric fan, pinadaan natin ng AC tapos binaliktad natin.. ganun pa rin.. kasi nagaalternate naman talaga un.. kahit anong line pa un mauna..
di po ba dapat baligtad ang ikot ng electric fan kung magkaiba ng polarity dahil dun sa motor |
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Woots29
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« Reply #13 on: April 10, 2010, 11:37:10 AM » |
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di po ba dapat baligtad ang ikot ng electric fan kung magkaiba ng polarity dahil dun sa motor
kung dc motor pinaguusapan natin, magbabaligtad nga |
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e172ece
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« Reply #14 on: April 10, 2010, 11:46:32 AM » |
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kung dc motor pinaguusapan natin, magbabaligtad nga
di po ba dapat baligtad ang ikot ng electric fan kung magkaiba ng polarity dahil dun sa motor
uu nga nu di ko napansin...magbabaligtad siya po. Pwede din yung AC na may DC offset.
subscribing bigay naman po kayo ng example po.... |
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Woots29
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« Reply #15 on: April 10, 2010, 12:07:18 PM » |
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about AC na may DC offset is audio amplifiers
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rdpzycho
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« Reply #16 on: April 10, 2010, 12:11:01 PM » |
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madalas rin 'yan sa RF.
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carlsfootprints
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« Reply #17 on: April 10, 2010, 05:34:11 PM » |
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wow i got the answer na!thanks pogi/ganda point for you
kapag ang diode, pinadaan natin ng DC tapos binaliktad ang polarity, diba magswi2tch off.. ideally off..
kapag ang electric fan, pinadaan natin ng AC tapos binaliktad natin.. ganun pa rin.. kasi nagaalternate na
man talaga un.. kahit anong line pa un mauna..
tnx sa point.. |
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iyo karpo
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« Reply #18 on: April 13, 2010, 05:55:54 AM » |
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bakit walang positive and negative ang a.c. sa d.c. may positive and negative ?
Ang typong sagot ng electrician: (automotive electrician) Sa kotse may positive at negative ang DC, - red and black wires. (construction electrician) sa bahay naman may "hot", "ground" and "neutral" - black - green - white wires |
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e172ece
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« Reply #19 on: April 21, 2010, 07:12:52 PM » |
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Ang typong sagot ng electrician:
(automotive electrician) Sa kotse may positive at negative ang DC, - red and black wires.
(construction electrician) sa bahay naman may "hot", "ground" and "neutral" - black - green - white wires
regarding sa neutral,,,,hanging ground or kasama siya sa ground thanks. famous tlga ang red for positive and black sa ground.wiring scheme ko sa lahat ng project ko. standard kaya siya sa lahat? |
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