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Author Topic: 220v AC to 12v DC.  (Read 1989 times)

Offline viel_dk

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220v AC to 12v DC.
« on: August 25, 2009, 05:14:02 PM »
guys pede po makahingi ng simpleng diagram nun^^
para po sa audio amp na 15w.

thanks
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220v AC to 12v DC.
« on: August 25, 2009, 05:14:02 PM »

Offline Roland

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Re: 220v AC to 12v DC.
« Reply #1 on: August 25, 2009, 05:54:39 PM »


ito bro
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Re: 220v AC to 12v DC.
« Reply #1 on: August 25, 2009, 05:54:39 PM »

Offline kalansing

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Re: 220v AC to 12v DC.
« Reply #2 on: August 25, 2009, 06:54:21 PM »
tama lang ung transformer na 1amp para sa project mo :)
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Re: 220v AC to 12v DC.
« Reply #2 on: August 25, 2009, 06:54:21 PM »

Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #3 on: August 26, 2009, 04:52:42 PM »
ano po value ng diode tsaka ng capacitor?

pwede ko bang gmitin jan ung transformer na 9volts,  200mA ung output, meron kasi d2 sa haus eh.

3 ampere daw po pero cge pwede n rin to.

thanks
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Re: 220v AC to 12v DC.
« Reply #3 on: August 26, 2009, 04:52:42 PM »

Offline Mhavskie

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Re: 220v AC to 12v DC.
« Reply #4 on: August 26, 2009, 05:09:58 PM »
Yung 3A nlng gamitin mo. Kailangan regulated na
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Re: 220v AC to 12v DC.
« Reply #4 on: August 26, 2009, 05:09:58 PM »

Offline marcelino

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Re: 220v AC to 12v DC.
« Reply #5 on: August 26, 2009, 05:28:48 PM »
Quote from: viel_dk on August 26, 2009, 04:52:42 PM
ano po value ng diode tsaka ng capacitor?

pwede ko bang gmitin jan ung transformer na 9volts,  200mA ung output, meron kasi d2 sa haus eh.

3 ampere daw po pero cge pwede n rin to.

thanks

no... di po pwede yang 9V mo.

buy ka nalang sa nearest electronics shop sainyo...

should you want to calculate for the proper capacitor, you may refer here: http://my.integritynet.com.au/purdic/power1.html

sa given na circuit above [posted by roland], at 3A, you need 1N5400 rectifier diode. 1n5400 is a 3A diode, kung gusto mong pasiguro, you may use the next diode rating. 6A na yun. however, i normal case di naman nakakarating sa 3A ang application mo.  3A x 12V = 36W. sabi mo 15W di ba? so OK na yung 1N5400.

sa capacitor naman, you can simple pick values starting from 1000uF - 25V.
kung strict ka, refer ka dun sa website. modify mo nalang sa full-wave configuration.
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Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #6 on: August 26, 2009, 06:37:49 PM »
eh kung yung 9v ang gagamitin ko tapos  yung rect. na pang 200mA?
pwede?

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Offline tiktak

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Re: 220v AC to 12v DC.
« Reply #7 on: August 26, 2009, 06:46:14 PM »
masyadong mababa ang 200mA para sa 15W na amp, 1A siguro puwede pa
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Offline ferdie444

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Re: 220v AC to 12v DC.
« Reply #8 on: August 26, 2009, 10:31:15 PM »
@viel_dk,hindi pwede ang 9v@200ma dahil masyadong mababa @ di kayang i-drive yong power amplifier mo.based on the spec of your ampl.is 15w/12vdc.in otherwords,P=IE: P=15w and E=12vdc I=?ampere(unknown)


therefore:I=15w divided by 12v=1.25A
             I=1.25ampere or 1250milliamps(minimum current rating of your transformer).


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Offline thorshz

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Re: 220v AC to 12v DC.
« Reply #9 on: August 26, 2009, 10:41:45 PM »
sa cap naman, mas malaking value mas maganda since mas mataas ang filtering/maliit ang ripple voltage and maliit ang noise mo.
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Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #10 on: August 27, 2009, 01:16:40 PM »
ah..thnks po sa mga info...masters!.. ;Dhehe
dami ko natutunan s inyo...

cge bli nlng ako ng transformer,..kaso yung mga transformer sa deeco alang mga label kung ilang output voltage and amperes,
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Offline ferdie444

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Re: 220v AC to 12v DC.
« Reply #11 on: August 27, 2009, 07:30:40 PM »
bro,kung tungkol doon sa label ng ng transformer ay madali lamng yon dahil sure na meron silang code doon sa kanilang listahan @ alam kung magkano ang rating ng x'fmr(current, primary/secondary voltage).otherwise,malulugi sila @ madaming magrereklamo sa benibenta nilang parts(deeco).thanks....
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Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #12 on: August 27, 2009, 07:51:40 PM »
cge bli lng ako ng 1amp, magkano kya yun, di ko alam eh.
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Offline Mhavskie

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Re: 220v AC to 12v DC.
« Reply #13 on: August 27, 2009, 08:13:48 PM »
Dito samin mga 250php yung 12v/1a
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Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #14 on: August 27, 2009, 08:27:21 PM »
nge mahal rin pla un,.... :o gano kalaki yun?
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Offline viel_dk

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Re: 220v AC to 12v DC.
« Reply #15 on: August 27, 2009, 08:46:46 PM »
bumili kasi ako ng 15w mono acoustic amplifier kit sa deeco eh,  dun ko gagamitin yun..
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Offline Mhavskie

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Re: 220v AC to 12v DC.
« Reply #16 on: August 27, 2009, 09:02:25 PM »
Ito yung sample ng xformer na 1A
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Offline tiktak

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Re: 220v AC to 12v DC.
« Reply #17 on: August 27, 2009, 09:37:39 PM »
Quote from: viel_dk on August 27, 2009, 01:16:40 PM
ah..thnks po sa mga info...masters!.. ;Dhehe
dami ko natutunan s inyo...

cge bli nlng ako ng transformer,..kaso yung mga transformer sa deeco alang mga label kung ilang output voltage and amperes,
galing lang ako sa deeco sa may sales, meron naman mga label ng voltage at current mga transformer dun ah mga usual na miyama ang tatak
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Philippine Electronics Forum

Re: 220v AC to 12v DC.
« Reply #17 on: August 27, 2009, 09:37:39 PM »
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