dj_mooo
CR2032 Battery
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« on: February 18, 2008, 03:58:08 PM » |
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The Philippine Electronics and Technology Forum
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« on: February 18, 2008, 03:58:08 PM » |
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Ate Shey
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« Reply #1 on: February 18, 2008, 04:25:26 PM » |
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1. Yung wattage ng transformer makukuha mo by:
Power = Voltage X Current
Example: Lets design a transformer na 220 Volts primary tapos 12 Volts secondary at 1 Ampere. Ang total wattage niya ay 12 Watts ( assuming 100% efficiency )
2. Yung core dimension at turns per volt depende yan sa wattage mo:
Example: Ang 12 watts na core ay may specification na 7/8 inch na center leg at 7/8 to 1 inch na thickness. Ang turns per volt niya according sa table ay 8 turns per volts. ( kailangan mo yung table na galing sa electronics enthusiasts or projects and circuits na magazine )
3. Para makuha mo yung number of turns sa primary at secondary do the following:
220 Volts X 8 turns per volt = 1,760 turns for Primary winding
12 Volts X 8 turns per volt = 96 turns for Secondary winding
4. Yung wire size naman consult mo yung AWG table.
Ang secondary current natin ay 1 Ampere ----->AWG #21 or #22
Ang primary current ay 12 watts divided by 220 volts equals 0.0545 ampere ----> AWG #34
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- Oh Lordy, troubles so hard. Don't nobody know my troubles but God
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dj_mooo
CR2032 Battery
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« Reply #2 on: February 18, 2008, 04:32:07 PM » |
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1. Yung wattage ng transformer makukuha mo by:
Power = Voltage X Current
Example: Lets design a transformer na 220 Volts primary tapos 12 Volts secondary at 1 Ampere. Ang total wattage niya ay 12 Watts ( assuming 100% efficiency )
2. Yung core dimension at turns per volt depende yan sa wattage mo:
Example: Ang 12 watts na core ay may specification na 7/8 inch na center leg at 7/8 to 1 inch na thickness. Ang turns per volt niya according sa table ay 8 turns per volts. ( kailangan mo yung table na galing sa electronics enthusiasts or projects and circuits na magazine )
3. Para makuha mo yung number of turns sa primary at secondary do the following:
220 Volts X 8 turns per volt = 1,760 turns for Primary winding
12 Volts X 8 turns per volt = 96 turns for Secondary winding
4. Yung wire size naman consult mo yung AWG table.
Ang secondary current natin ay 1 Ampere ----->AWG #21 or #22
Ang primary current ay 12 watts divided by 220 volts equals 0.0545 ampere ----> AWG #34
sir pwd po bng pacalculate nlng ako? i2 po gagawin kung transformer! primary:220v secondary:54-0-54v ampere: 10A maraming salamat po ulit! |
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ferds
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« Reply #3 on: February 18, 2008, 04:37:52 PM » |
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Hi Meron ako dito transformer Calculator, tables para sa wire conversion etc.. Lagi ko sya gamit every time gumagawa ako transformer.. Let me know kung gusto nyo copy.. upload ko sya..   |
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Ate Shey
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« Reply #4 on: February 18, 2008, 04:42:48 PM » |
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Salamat Ferds  Hanggang 375 Watts maximum lang ang nasa table ko  .. yung design ni djmoo kailangan 540 Watts.. Paki-upload naman very useful yan software mo .. |
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- Oh Lordy, troubles so hard. Don't nobody know my troubles but God
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ferds
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« Reply #5 on: February 18, 2008, 04:56:08 PM » |
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sir pwd po bng pacalculate nlng ako?
i2 po gagawin kung transformer!
primary:220v
secondary:54-0-54v
ampere: 10A
maraming salamat po ulit!
heto
Center Leg : 1 1/2"
Thickness : 3"
Primary Wire : AWG 17 | Total No of Turns : 1815
Seconday wire : AWG 14 | Total No of Turns : 98 + 98 = 196 |
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dj_mooo
CR2032 Battery
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« Reply #6 on: February 18, 2008, 05:01:39 PM » |
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Hi Meron ako dito transformer Calculator, tables para sa wire conversion etc.. Lagi ko sya gamit every time gumagawa ako transformer.. Let me know kung gusto nyo copy.. upload ko sya.. sir bka po pwding upload mo nlng para hnd lng sakin makaka2long yan kundi sa lahat! maraming salamat po! |
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dj_mooo
CR2032 Battery
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« Reply #7 on: February 18, 2008, 05:03:03 PM » |
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heto
Center Leg : 1 1/2"
Thickness : 3"
Primary Wire : AWG 17 | Total No of Turns : 1815
Seconday wire : AWG 14 | Total No of Turns : 98 + 98 = 196sir salamat po sa pagcalcutale! |
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ferds
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« Reply #9 on: February 18, 2008, 05:13:29 PM » |
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sir salamat po sa pagcalcutale!
no problem bro... |
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kinyo
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« Reply #10 on: February 19, 2008, 10:05:23 PM » |
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yung design ni djmoo kailangan 540 Watts.. Hindi ba dapat 1080 watts yung transformer? |
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Ate Shey
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"E tangi ana koe Hine e hine, E hine e Hoki maira"
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« Reply #11 on: February 19, 2008, 10:24:46 PM » |
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Hindi ba dapat 1080 watts yung transformer?
Full wave center tapped transformer kasi yung design niya kaya ang ibig sabihin ng 54-0-54 Volts@10 Amps na secondary ay dalawang 54 Volts secondary winding running at 5 Amps each.. Makukuha niya yung 54 Volts at 10 amps once maikabit na yung dalawang rectifier diodes na kung saan ang output nung dalawang winding ay mag-co-combine in parallel kaya 54 volts pa din pero 10 amps na.. |
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- Oh Lordy, troubles so hard. Don't nobody know my troubles but God
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WildSwan
Size C Battery
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Addicted to solder flux.
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« Reply #12 on: February 20, 2008, 01:14:38 AM » |
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Papano pag Toroid type yung transformer?
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NO TO TEXT SPEAK - Save the Vowels Movement
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electronic repairer
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« Reply #13 on: March 01, 2008, 01:51:47 PM » |
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Mga bossing!
Pwede pacalculate ng transformer.
Primary-240v
secondary 38-0-38 center tapped
Ampere-20 Amp
Wala kc availble nito sa amin ito nalang kulang ko sa project ko..
thanks in advance mga bossing
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Patience is the best attitude of an electronic repairer.
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fantom_mayonaise
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« Reply #14 on: March 11, 2008, 04:13:16 PM » |
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B00k#4 ng electronics enthusiasts sa alexan. Complete guide with tables for wires, EI-core dimensions.
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tony
Gas Turbine
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leach amp afficionado
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« Reply #15 on: December 16, 2009, 06:35:55 PM » |
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page 234, chapter 5 of the Rradiotron Designers Handbook 4, contains excellent information about transformers..... you can download the handbook here: http://draget.net/tom_pages/index.php?p=rdh4 |
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in electronics, as in everyday life, there is always a reason for doing things...and if you can not explain why you want to do what you are about to do, better stop or else magic smoke will come out, safety first is the best policy here.....kuha mo?
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marleytrical
Size AAA Battery
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« Reply #16 on: February 23, 2010, 11:39:28 AM » |
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ah mga sir diba pwde naman tau magdesign ng transformer using 7.5 cons. devide core area tapos lalabas n ung turns per volt nya nagawa n namin to nagana sya ksi ung constant galing sa general law of transformer.
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tony
Gas Turbine
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leach amp afficionado
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« Reply #17 on: February 23, 2010, 11:56:40 AM » |
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building transformers take a lot of patience and aching fingers..masakit sa kamay...add to the fact that it can be dangerous if you do not do it right or if you do not know what you are doing..... sayang i can not post pictures from where i am...but remind me in mid may....i will be in manila then....tuloy natin... pwede mo pag-aralan ito : http://www.turneraudio.com.au/powertranschokes.htm |
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in electronics, as in everyday life, there is always a reason for doing things...and if you can not explain why you want to do what you are about to do, better stop or else magic smoke will come out, safety first is the best policy here.....kuha mo?
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jrsexpress
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« Reply #18 on: February 23, 2010, 01:57:01 PM » |
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Hi Meron ako dito transformer Calculator, tables para sa wire conversion etc.. Lagi ko sya gamit every time gumagawa ako transformer.. Let me know kung gusto nyo copy.. upload ko sya.. sir pahingi nga tables for wire conversion, sana mayron din calulation in grams sa wire na bibilhin,... thanks in advance |
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tony
Gas Turbine
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leach amp afficionado
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« Reply #19 on: February 23, 2010, 05:43:35 PM » |
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email mo ko antonio.tecson@kentech.ie bibigyan kita ng spreadsheets... |
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in electronics, as in everyday life, there is always a reason for doing things...and if you can not explain why you want to do what you are about to do, better stop or else magic smoke will come out, safety first is the best policy here.....kuha mo?
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The Philippine Electronics and Technology Forum
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June 23, 2011, 07:22:19 AM
