kouji16
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« on: March 11, 2009, 01:34:46 PM » |
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may ckt po ksi ako n 1LED yung output. tas gsto ko pong gawing 10LEDs, pinarallel ko lng yun sampu kaso himina yung liwanag... tingin ko yung current yung kylangan iamplify pno po b un gamit yung transistor??
help po pls...
kng pde yung actual schem diag nung transistor ampli w/ values ng resistor (kng meron).
salamat po....n_n
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« on: March 11, 2009, 01:34:46 PM » |
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rdpzycho
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« Reply #1 on: March 11, 2009, 01:38:08 PM » |
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ano 'yung supply mo? kung naka-direct kasi sa supply 'yang ginawa mo, 'yung supply mo ang dapat ayusin dahil wala nang magagawa 'yung amplifier dun (unless sa ibang supply din siya ikabit).
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kouji16
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« Reply #2 on: March 11, 2009, 01:44:48 PM » |
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9v po yung ckt, tnry ko n din po gawing 12v ung input pro parang gnun pden...
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rdpzycho
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« Reply #3 on: March 11, 2009, 01:55:13 PM » |
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sa 9V mo kinabit 'yung mga LED? anong series resistor?
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kouji16
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« Reply #4 on: March 11, 2009, 02:07:05 PM » |
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d po yung 12v sa input nung ckt ko nlgy. iba iba po eh mga 150-450ohms ang range
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rdpzycho
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« Reply #5 on: March 11, 2009, 02:10:08 PM » |
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ano 'yung 12V na input? kung 'yung 10 LED naka-parallel sa iisang series resistor, mahina talaga output nun.
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kouji16
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« Reply #6 on: March 11, 2009, 02:28:41 PM » |
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gnun nga po tama pu yung last statement nyo...pno po b dapat gwin? babaan p yung resistance? or gawin ko tagiisa cla???
salamat po sa mga reply...
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rdpzycho
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« Reply #7 on: March 11, 2009, 02:47:32 PM » |
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either tig-isa sila, o babaan mo 'yung resistor mo.  |
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"Keep on starting, and finishing will take care of itself."
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kouji16
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« Reply #8 on: March 11, 2009, 03:24:35 PM » |
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ok try ko po un salamat po uli
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RaffT
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« Reply #9 on: March 11, 2009, 03:27:26 PM » |
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@koujie,
better post the schematic (LED part) para maintindihan namin.. we dont know if your trying to illuminate the LED from an IC output or from the powersupply etc etc...
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Woots29
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« Reply #10 on: March 11, 2009, 04:47:42 PM » |
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@koujie,
better post the schematic (LED part) para maintindihan namin.. we dont know if your trying to illuminate the LED from an IC output or from the powersupply etc etc...
i agree mas maganda para matulungan ka naming mabuti |
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kouji16
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« Reply #11 on: March 11, 2009, 06:07:51 PM » |
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 yan po un. yung sa stair way to heaven n ckt po yan yung bawat LED balak kong gawing tig10 except dun sa bi-LED. yung mismong ckt po ksi nagawa ko na ang balak ko gagawa ako n hiwalay ng pcb para dun sa mga LED tas wire nlng... |
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RaffT
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« Reply #12 on: March 11, 2009, 07:40:10 PM » |
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^di namin makita image... I think gumagamit yan ng CD4017 decade counter?? if so, an NPN will do the job nicely... there are 2 ways para maparami mo LEDs (per single output)
#1 > gamit ka ng NPN, use LEDs in parallel(per LED may limiting resistor para pantay ang current flow PER LED)
#2> you can SERIES those LEDS BUT you need to RAISE your supply voltage para sa LED driver mo..
just use #2 para mas madali....
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kouji16
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« Reply #13 on: March 11, 2009, 08:49:01 PM » |
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 to po ung ckt...n_n ntry ko n rin po yung series eh. kso lalong nawala yung ilaw. kng tataasan ko po yung voltage, hindi po ba masisira ung ckt? ska d po lam maxado gamitin yung transistor bka po pde kht smpleng schem diag..hehehe..  salamat po...senxa na. |
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Woots29
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« Reply #14 on: March 12, 2009, 09:58:50 AM » |
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wel baka hindi mo chinek ung transistor mo baka baligtad ang pin config nya. maaring ECB or EBC  |
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RaffT
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« Reply #15 on: March 12, 2009, 12:10:52 PM » |
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to po ung ckt...n_n ntry ko n rin po yung series eh. kso lalong nawala yung ilaw. kng tataasan ko po yung voltage, hindi po ba masisira ung ckt? ska d po lam maxado gamitin yung transistor bka po pde kht smpleng schem diag..hehehe.. salamat po...senxa na. on my analysis, parang voltage comparator style ang configuration ng transistors jan...a certain LED will light at certain votage/s... you could just TAP an output then DRIVE a separate transistor+LEDs in parallel... san ba jan an unang umiilaw? yung LED sa T1 or T6? use a PNP transistor then yung base connection nya, TAP ka sa junction of T1/LED or T6/LED...will post a schema later EDIT: ok TRY mo ito...  PNP yan... |
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kouji16
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« Reply #16 on: March 12, 2009, 01:43:03 PM » |
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@Woots29: ok nmn po. @RaffT : opo, una po iilaw yung LED sa T1.  gnto po yung una kong ginawa. tas balak ko dn pong lagyan ung iba pa LED sa t2-t6, gmagana prin ng maayos yung ckt pero himina po ung ilaw dun sa part ng T1. kaya naisip ko kng pde yung amplifier dn s bndang un. kng llgn ko po bng same value ng resistor yung bawat LED(ex. yung group nung 560ohms llgyn ng tig 560ohms) uubra po kya yun? yan po yung suggestion ni kuya rdpzycho... tas dn po sa pinost nyo, every 2 LED kylangan magdagdag ng transistor or kahit ilan n ilgy ko dun?? senxa n po. d ako mkapnta s lab ngayon eh, hndi ko mtry. kkha nlng ako ngaun ng maraming options para pag pnta ko mtry ko lahat yun....slamat po...n_n salamat sa lahat... |
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Woots29
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« Reply #17 on: March 12, 2009, 01:46:12 PM » |
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hindi nga pwede heheh
dapat seperate resistors per led
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spidamang
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« Reply #18 on: March 12, 2009, 02:04:55 PM » |
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kouji16
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« Reply #19 on: March 12, 2009, 02:31:37 PM » |
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naisip ko n rin po yung relay kso ang mahal...T_T
ung napagtanongan ko ksi nsa 50 yat ang isa...
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September 10, 2009, 11:36:49 AM
