Author Topic: alexan FM transmitter.... (Read 1841 times)

chicobulilit · « **on:** September 04, 2011, 10:07:34 PM »

hello po mga kuya...

may nakapag gawa na po ba sa inyo ng fm transmitter kit ng alexan...

kasi i tried to remake the PCB of the kit (professor requirements) kasi iinlude ung mga names namin...

pero while i was observing the provided pcb and the schem... may ibang connections na nagkaroon sa PCB.....

so i dont know kung ano talga ung mali.... either ung schem ba or ung ready made PCB ng alexan.... pa help naman po on this.... i will post po ung schem and PCB....

so dun makikita nyo na si C8 ay may direct connection from V+ pero wala sa schem... un pa lang po ung na observe ko pero i belive na meron pang iba...

Philippine Electronics Forum · « **on:** September 04, 2011, 10:07:34 PM »

Ikasamoko · « **Reply #1 on:** September 04, 2011, 10:29:47 PM »

post some picture please..

Philippine Electronics Forum · « **Reply #1 on:** September 04, 2011, 10:29:47 PM »

chicobulilit · « **Reply #2 on:** September 04, 2011, 10:33:06 PM »

ETO NA PO UNG IMAGE...... PHINOTOSHOP KO NA PO ung sa PCB para makita nyo po kung anong parts ung sinasabi ko... PLEASE HELP ME... ANO PO UNG SUSUNDAN KO..... NEED ANSWERS NOW..... THANKS A LOT!

Philippine Electronics Forum · « **Reply #2 on:** September 04, 2011, 10:33:06 PM »

Ikasamoko · « **Reply #3 on:** September 04, 2011, 10:42:32 PM »

Tama ang pcb layout...mali yung schem....meron errata yun...yung upper portion ng line sa diagram should be connected to B+

Junction of R1, C2, C8, R4, C6 at L1 dapat naka connect sa B+ to..

Philippine Electronics Forum · « **Reply #3 on:** September 04, 2011, 10:42:32 PM »

chicobulilit · « **Reply #4 on:** September 04, 2011, 10:47:56 PM »

in lang.... hindi kasama ung mga error sa kit mismo.. tsk.... oh well.. thanks po kuya

Philippine Electronics Forum · « **Reply #4 on:** September 04, 2011, 10:47:56 PM »

Ikasamoko · « **Reply #5 on:** September 04, 2011, 10:51:01 PM »

Sundan mo lang yung PCB....

galing ng pagkagawa mo sa Photoshop ng paglagay sa top overlay ito bottom side...baka pwede mo naman share yun if panu...

chicobulilit · « **Reply #6 on:** September 04, 2011, 11:08:28 PM »

nasabi mo na nga kuya.... overlay lang ung isang layer ng image(bottom part of PCB) tapos pinatong dun sa isang layer pa ng image(top part of PCB)... rotate rotate mo lang para makuha ung proper allignment ng mga holes

Ikasamoko · « **Reply #7 on:** September 04, 2011, 11:11:44 PM »

panu naging transparent yun??

chicobulilit · « **Reply #8 on:** September 05, 2011, 12:07:18 AM »

pag inoverlay mmo ung image mejo transparent na ung kulay nya...

macky · « **Reply #9 on:** September 07, 2011, 04:30:51 AM »

"OVERLAY"

Quote from: Kasamiko on September 04, 2011, 11:11:44 PM

panu naging transparent yun??

sis, punta ka sa "Layer" window, then may makikita ka "Normal" <---option yan na dropdown menu, hanapin mo "Overlay" yan na yung effect na parang transparent yung layer at makikita na yung nasa ilalim ng layer na yan....

Ikasamoko · « **Reply #10 on:** September 07, 2011, 10:20:34 AM »

ok sis macky...maraming saging sa'yo..

caicai · « **Reply #11 on:** September 23, 2011, 01:00:44 PM »

hi... ate chicobulilit.. pwedi pa post ng picture nung final product nung fm transmitter mo.. please.. ksi pinapagawan din kmi ng gnito eh.. kso di gumagana yung akin

sammyboy102889 · « **Reply #12 on:** February 29, 2012, 11:46:39 PM »

ung mic ba nito 3 pins din or 2 pins? 2 pins kasi ung nasa kit. tapos 3 pins ang nasa schem at layout. patulong naman po.

macky · « **Reply #13 on:** March 01, 2012, 04:30:59 AM »

Quote from: sammyboy102889 on February 29, 2012, 11:46:39 PM

ung mic ba nito 3 pins din or 2 pins? 2 pins kasi ung nasa kit. tapos 3 pins ang nasa schem at layout. patulong naman po.

you can also use that 2-pin mic, just use the:

#1 (printed on board) as GND
#2 <---- OUT ng mic

Woots29 · « **Reply #14 on:** March 01, 2012, 06:02:21 AM »

dont forget 1k resistor from v+ to pin 2

macky · « **Reply #15 on:** March 01, 2012, 09:01:49 AM »

Quote from: Woots29 on March 01, 2012, 06:02:21 AM

dont forget 1k resistor from v+ to pin 2

agree! onga pala nalimutan ko yan, dyan yan kukuha ng supply, FET microphone kasi yan.

sammyboy102889 · « **Reply #16 on:** March 01, 2012, 09:15:50 PM »

salamat. parang na picture out ko na rin.

nwired · « **Reply #17 on:** April 21, 2012, 01:13:01 PM »

Salamat neto bossing ...

tranqspogi · « **Reply #18 on:** May 19, 2012, 03:22:49 PM »

hindi naman sa mali yong ginawa mo... nakita mo yong magnetic wire? na ilang round yong pinaikot.. yon ang Frequency pwede mo icompress to down the frequency channel... pwede mo ma wide pero tataas yong frequency channel yong sa atin kasi.... 80 to 108 mhz channel tayo... need mo talaga ang Frequency counter... para malaman mo ang Frequency mo.... nakagawa na ako.... ilang days ko din natapos yong pagtotuno sa channel... 4w Fm Transmitter... 89.5 mhz ang channel ko within 1000ft long range na macocovered ng signal

Ikasamoko · « **Reply #19 on:** May 19, 2012, 03:31:44 PM »

4 watts at 1000 ft lang ma cover mo? are you kidding me?

yung 1 watter ko umaabot nga ng 5km...

Philippine Electronics Forum · « **Reply #19 on:** May 19, 2012, 03:31:44 PM »

Author Topic: alexan FM transmitter.... (Read 1841 times)

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