BT4840

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BT4840

Post by alvinquimbo on Wed Jan 11, 2017 5:01 pm

Mga sis may pin out kayo nito na IC? Pinaayos kasi ito sa akin...gusto ko lang malaman kung anu-ano ang pin out nito...maraming salamat... going to cry going to cry going to cry
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Re: BT4840

Post by alvinquimbo on Wed Jan 11, 2017 6:49 pm

Additional info lang mga sis...No audio out ito..kaya hinatulan ko agad ang IC nya,pinalitan ko ito pero wala parin..no audio out parin sya..ano kaya ang probs nito..creative yung brand nya na may subwoofer...nagtry ako ng signal inject pero wala talaga akong masagap na signal in...may switching paba na ito mga sis para gumana???sana matulungan nyo ako...
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Re: BT4840

Post by ultrasonic™ on Thu Jan 12, 2017 11:40 am

origin from chekwang kasi iyan vin kaya unknown pa ang datasheet sa net... may mute pin iyan at standby sw... kaya hindi iyan tutunog pag isa sa kanila ang pumapalya

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Re: BT4840

Post by alvinquimbo on Thu Jan 12, 2017 1:33 pm

pano kaya malalaman sir ultra ang mute pin at saka stnby switch? may paraan paba na mamodify yan sir??or alternative para macondemn ko ang mga iyan...??salamat sir sa info... doubt doubt doubt
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Re: BT4840

Post by ultrasonic™ on Fri Jan 13, 2017 10:56 am

^ malalaman mo ang mute pin vin pag may switching tranny na nakonect sa pin niya prio to pull up (+V) or pull down (gnd)..

sa standby switch depende sa design... pero most of them may resist na naka series prio to B+ source mo.. like example 1K then daan sa zener diode for voltage reference para mag drop ang B+ into lower like 5v-3V na requirement niya.

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Re: BT4840

Post by arkin on Sat Jan 14, 2017 6:24 pm

pwede magpost ka ng picture ng circuit nyan sis?wla bang mga trasistor sa cicuit nyan,pwede itry mong tanggalin muna baka nakamute yan.at ano ba volume control nyan analog o digital?
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Re: BT4840

Post by alvinquimbo on Sat Jan 14, 2017 10:31 pm

try ko lang ipost sis...kasi pinalitan ko agad ng IC kaso ganun parin...icheck ko muna kung may tranny..salamat sa pagdaan sis arkin...salamat din sir ultra..update ko lang pag may improvement..analog ito sis..sa detalye ng circuit nya ay puro smd tapos may isa pang ic sya na smd din..
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Re: BT4840

Post by ultrasonic™ on Mon Jan 23, 2017 12:56 pm

i agree with sis arkin... pwde din na digital control iyan...

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Re: BT4840

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