freshmen
LR44 Battery
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« on: March 07, 2010, 05:03:43 PM » |
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im jade, a 2nd yr ece student, ask lang po sana ako ng schematic and parts list pra sa isang regulated na transformer, meron po kc akong ngawa na multi tap na transformer (20v 2A) ur replies are much appreciated tnx
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The Philippine Electronics and Technology Forum
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« on: March 07, 2010, 05:03:43 PM » |
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akhen
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"Learning is good but application is 100x better!"
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« Reply #1 on: March 07, 2010, 07:14:53 PM » |
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ilang volts ang target output mo?
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freshmen
LR44 Battery
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« Reply #2 on: March 07, 2010, 08:31:07 PM » |
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possible po ba magkaron around 3 ouputs? e.g 5, 9 ans 12?
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Simatar
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« Reply #3 on: March 07, 2010, 08:47:22 PM » |
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possible po ba magkaron around 3 ouputs? e.g 5, 9 ans 12?
Pwede sir... my idea ay yung circuit mo ay may tatlong regulator for each voltage na desired mo kung gusto mo sabay sabay ung output. pero kung gusto mo my selector switch para kung ano lang gusto mo palabasin na voltage don mo iset switch. Antayin lang natin mga masters sa power supply design for more advice... |
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marcelino
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« Reply #4 on: March 07, 2010, 09:29:52 PM » |
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1st option, employ 3 regulator ICs. 7805, 7809 and 7812 or 3x LM317(each one is configured to the voltages need). resistor lang naman ang kailangan sa LM317 para magbago-bago ang output. you might want to check the datasheets of the said ICs, nandun na kasi ang calculations ng resistors.
2nd option, kung single output lang, you can use 1 LM317. yung isang resistor ay nagbabago depende sa position ng switch.
ano nga ba ang kailangan mo? 3 outputs or single output.
same idea to kay Simatar.
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"Don't take life seriously. After all, no one has ever come out of it alive. -Bugs Bunny"
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I n s i d e r 2010
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matalino ka man ngayon ay mapagiiwanan ka rin
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« Reply #5 on: March 07, 2010, 09:48:00 PM » |
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mas ok siguro kung variable power supply ang gawin mo sis kz may x4mer ka na
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ang PIKON ay laging TALO,tandaan nyo po yan mga kapatid. IRESPETO ang bawat isa!
ang PANLALAIT sa kapwa ay isang kasalanan na
pagbabayaran mo rin balang araw!
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freshmen
LR44 Battery
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« Reply #6 on: March 08, 2010, 03:45:13 PM » |
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btw tnx po sa ideas, 3 ouput po sana gus2 ko cge il go w/ variable power supply nlng po cguro pa help nmn po ako pra sa schematic
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akhen
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« Reply #7 on: March 08, 2010, 05:47:07 PM » |
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found this one from mother google:  replace mo lang yung lm1084 with lm317 by the way ilan ang output ng transformer mo? |
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I n s i d e r 2010
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matalino ka man ngayon ay mapagiiwanan ka rin
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« Reply #8 on: March 08, 2010, 08:13:44 PM » |
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nice post sis akhen!
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ang PIKON ay laging TALO,tandaan nyo po yan mga kapatid. IRESPETO ang bawat isa!
ang PANLALAIT sa kapwa ay isang kasalanan na
pagbabayaran mo rin balang araw!
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voltaman_krc
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aruuuuu!
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« Reply #9 on: March 08, 2010, 09:17:44 PM » |
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^^^^ thnx akhen.  |
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usb kayo ng usb.... "FLASH DRIVE" ang tawag dun.
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freshmen
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« Reply #10 on: March 08, 2010, 10:16:52 PM » |
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bali 20v po sya center tapped
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nucleus
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« Reply #11 on: March 08, 2010, 10:53:43 PM » |
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bali 20v po sya center tapped
10V-0-10V ? mas maganda nyan lagyan ng automatic selector para pag mababa na ang kelangan mo sa 10V ka na lang magtatap less heat ang gagwin ng regulator  |
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Hi! I'm nucleus and i carry the charge  Hindi ako nandito para makipagkumpitensya kanino man |
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The Philippine Electronics and Technology Forum
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October 20, 2008, 02:23:27 PM
