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Author Topic: [help]paano malalaman voltage ng zener diode  (Read 483 times)

Offline turotoknis

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[help]paano malalaman voltage ng zener diode
« on: May 18, 2012, 12:24:37 PM »
nsa power supply section siya ng TV connected sa C2331 na transistor
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[help]paano malalaman voltage ng zener diode
« on: May 18, 2012, 12:24:37 PM »

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Re: [help]paano malalaman voltage ng zener diode
« Reply #1 on: May 18, 2012, 12:36:48 PM »
may numero po yan o nasa diagram ng tv mismo.
pde din kung IC Reg to nasa datasheet lang.
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Re: [help]paano malalaman voltage ng zener diode
« Reply #1 on: May 18, 2012, 12:36:48 PM »

Offline ultrasonic™

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Re: [help]paano malalaman voltage ng zener diode
« Reply #2 on: May 18, 2012, 12:42:41 PM »
walang bang naka indicate sa body nya ?
like 6V5 = 6.5V





or part number na mismu like 1N5526 = 6.8V

tignan mu lang mabuti.... needed mu lng talasan ang iyong mga  mata





o baka  naman color coded pa yan ;D


mas maganda  post mu nlng ang model number at chassis ng tinutrouble mu at matutulungan ka  agad ;D
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Re: [help]paano malalaman voltage ng zener diode
« Reply #2 on: May 18, 2012, 12:42:41 PM »

Offline MX45

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Re: [help]paano malalaman voltage ng zener diode
« Reply #3 on: May 18, 2012, 12:48:10 PM »
Quote from: ahseng02 on May 18, 2012, 12:24:37 PM
nsa power supply section siya ng TV connected sa C2331 na transistor


check mo yung body marking ng diode tapos e find mo sa alldatasheet.

ngayon kung sure ka naman na good  ang Zener diode at kailangan mo lang talagang malaman ang voltages rating nito , pwede rin yan malaman, kung may dc power supply ka na adjustable connect mo lang yung zener diode with load resistor mga 1K-5K at measure mo ang out ng zener diode kung hangang saan sya mag stabilize eh yun ang voltages nya. let say input sa diode is 12V then nag stabilzed lang sya sa 9.1V yun ang volatge rating nya , kahit pa ang input ay 15V dapat 9.1V lang ang output. wag lang sobra ang input masisira na ang zener diode.
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Re: [help]paano malalaman voltage ng zener diode
« Reply #3 on: May 18, 2012, 12:48:10 PM »

Offline turotoknis

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Re: [help]paano malalaman voltage ng zener diode
« Reply #4 on: May 18, 2012, 01:07:32 PM »
open na po ata siya kc pareho may palo sa tester (forward tsaka reverse)

C. 10 po nakikita ko sa katawan niya



dpu kaya 50 v pataas?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #4 on: May 18, 2012, 01:07:32 PM »

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Re: [help]paano malalaman voltage ng zener diode
« Reply #5 on: May 18, 2012, 01:16:33 PM »
Quote from: ahseng02 on May 18, 2012, 01:07:32 PM
open na po ata siya kc pareho may palo sa tester (forward tsaka reverse)

in ckt test ba sis o out ckt resistance measurement?

kung in circuit dapat mas mababa resistance nung isa

kung off ckt dapat infinite tska low

kung diode test naman ang pang test mo

dapat 0 tska .3-.7V

otherwise sira na nga
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Re: [help]paano malalaman voltage ng zener diode
« Reply #6 on: May 18, 2012, 01:18:19 PM »
eto pa rin ba ung samsung?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #7 on: May 18, 2012, 01:28:58 PM »
^yup :'(

Quote from: protocol on May 18, 2012, 01:16:33 PM
in ckt test ba sis o out ckt resistance measurement?

kung in circuit dapat mas mababa resistance nung isa

kung off ckt dapat infinite tska low

kung diode test naman ang pang test mo

dapat 0 tska .3-.7V

otherwise sira na nga

off ckt,, parehong infinite, so sira po?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #8 on: May 18, 2012, 01:32:23 PM »
Quote from: ahseng02 on May 18, 2012, 01:28:58 PM
^yup :'(

off ckt,, parehong infinite, so sira po?

kahit sa pinaka highest range sis ng resistance?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #9 on: May 18, 2012, 01:34:36 PM »
Quote from: ahseng02 on May 18, 2012, 01:28:58 PM
^yup :'(

off ckt,, parehong infinite, so sira po?

malamang nga sis kasi dapat infinite isa jan eh
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Re: [help]paano malalaman voltage ng zener diode
« Reply #10 on: May 18, 2012, 01:46:46 PM »

kinopya ko sa board
mukhang 9V nga itong zener diode na to tama ba???
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Re: [help]paano malalaman voltage ng zener diode
« Reply #11 on: May 18, 2012, 02:06:35 PM »
Quote from: ahseng02 on May 18, 2012, 01:46:46 PM

kinopya ko sa board
mukhang 9V nga itong zener diode na to tama ba???

i think not sure sis kasi pde rin na mas mababa pa sa 9 yan hindi porket 9v input nya, ala ka ba mapa nyang inaayus mo, o kaya ala ba marking dyan sa diode as sabi nila kanina sau,..
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Re: [help]paano malalaman voltage ng zener diode
« Reply #12 on: May 18, 2012, 02:32:17 PM »
meron nga kxo kakaiba  letter C tapos 1 at 0
i think mag hahhanap ako ng ganuon sa board tapos test ko sa 12 volt kung 9volt ba lalabas
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Re: [help]paano malalaman voltage ng zener diode
« Reply #13 on: May 18, 2012, 02:38:46 PM »
hindi ba siya ganito sis BZX55 – C10 na naka DO-35 Glass Case

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Re: [help]paano malalaman voltage ng zener diode
« Reply #14 on: May 18, 2012, 03:03:12 PM »
Quote from: protocol on May 18, 2012, 02:38:46 PM
hindi ba siya ganito sis BZX55 – C10 na naka DO-35 Glass Case





C10 na naka DO-35 Glass Case<--- ganyan po pero wala yung BZX55
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Re: [help]paano malalaman voltage ng zener diode
« Reply #15 on: May 18, 2012, 03:13:11 PM »
i see, in case na you want to reconsider eto data sheet ung c** lang nagkakaiba, baka posible din na di na nilagay yun

http://pdf1.alldatasheet.com/datasheet-pdf/view/61997/GE/BZX55-C10.html
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Re: [help]paano malalaman voltage ng zener diode
« Reply #16 on: May 18, 2012, 03:32:05 PM »
Quote from: ahseng02 on May 18, 2012, 02:32:17 PM
meron nga kxo kakaiba  letter C tapos 1 at 0
i think mag hahhanap ako ng ganuon sa board tapos test ko sa 12 volt kung 9volt ba lalabas


sis ano ba ang model ng TV set mo? or yung Chassi number nya sa Board?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #17 on: May 18, 2012, 03:37:38 PM »
^ito model no. hindi ko alam alin s mga yan ???





so 10 v po ba siya?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #18 on: May 18, 2012, 04:31:51 PM »
Quote from: ahseng02 on May 18, 2012, 03:37:38 PM
^ito model no. hindi ko alam alin s mga yan ???





so 10 v po ba siya?


ilang inch ba ang TV mo? anong brand? samsung ba panasonic?
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Re: [help]paano malalaman voltage ng zener diode
« Reply #19 on: May 18, 2012, 05:02:05 PM »
20 in. samsung
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Re: [help]paano malalaman voltage ng zener diode
« Reply #19 on: May 18, 2012, 05:02:05 PM »
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