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Author Topic: Power supply (BJT)  (Read 3702 times)

Offline kheich

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Re: Power supply (BJT)
« Reply #20 on: August 31, 2008, 08:11:14 PM »
Quote from: Electron on August 31, 2008, 08:08:14 PM
yung Vin max ninyo minimeasure ninyo yun across the filter capacitor ? ..

opo
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Re: Power supply (BJT)
« Reply #20 on: August 31, 2008, 08:11:14 PM »

Offline rdpzycho

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Re: Power supply (BJT)
« Reply #21 on: August 31, 2008, 09:03:11 PM »
ano value kung walang load?
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Re: Power supply (BJT)
« Reply #21 on: August 31, 2008, 09:03:11 PM »

Offline kheich

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Re: Power supply (BJT)
« Reply #22 on: August 31, 2008, 09:06:55 PM »
Quote from: rdpzycho on August 31, 2008, 09:03:11 PM
ano value kung walang load?

value of what powh ? ng Vin po ba after dumaan ng capacitor?
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Re: Power supply (BJT)
« Reply #22 on: August 31, 2008, 09:06:55 PM »

Offline rdpzycho

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Re: Power supply (BJT)
« Reply #23 on: August 31, 2008, 09:08:42 PM »
kasi kung 24-0-24 at ginamit ng buo 'yung winding, nasa 66V ang output niyan.
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‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
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Re: Power supply (BJT)
« Reply #23 on: August 31, 2008, 09:08:42 PM »

Offline kheich

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Re: Power supply (BJT)
« Reply #24 on: August 31, 2008, 09:19:06 PM »
hmmmm...ask ko lang  powh .. nakakaapekto ba minsan ung time of the day ... kc pagumaga daw .. mababa ang kuryente na nasusususply.. hmmm.. me knalaman pu kea un ? hay.. sir ung out put nian dapt pu db pagwalng load.. 24*  sqrt 2 = approx 33.. so 33V sa pos and degative cycle tma? kc ung sa osci .. pagme load.. ang range nia is 18(neg cycle)-19(pos cycle) powh...nid q is 19 sa neg cycle.. pnu kya un?
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Re: Power supply (BJT)
« Reply #24 on: August 31, 2008, 09:19:06 PM »

Offline rdpzycho

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Re: Power supply (BJT)
« Reply #25 on: August 31, 2008, 09:22:29 PM »
teka, saan mo minemeasure 'yung positive at negative cycle? at buong winding ba nung transformer ang kinabit sa bridge? o POSITIVE at NEGATIVE supply 'to na pinaghiwalay ng bridge?
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Offline kheich

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Re: Power supply (BJT)
« Reply #26 on: August 31, 2008, 09:28:49 PM »
hmmm ang nakakabit pu sa bridge diode is 24 and zero powh... aun powh.. ang sukat na gmit sa osci ay sa capacitors
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Offline rdpzycho

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Re: Power supply (BJT)
« Reply #27 on: August 31, 2008, 09:32:26 PM »
supposedly dapat 33V 'yan. 2 cycle pa rin 'yan. subukan niyo na lang lakihan 'yung capacitor. kung wala pa rin, may problema sa transformer.
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Offline kheich

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Re: Power supply (BJT)
« Reply #28 on: August 31, 2008, 09:38:53 PM »
Quote from: rdpzycho on August 31, 2008, 09:32:26 PM
supposedly dapat 33V 'yan. 2 cycle pa rin 'yan. subukan niyo na lang lakihan 'yung capacitor. kung wala pa rin, may problema sa transformer.

eh ang isang factor pu kc pag super nilakihan q ung cap... then liliit ung ripple tma? kso hmmm tatas kya eon?
tnx powh sir
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Offline marcelino

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Re: Power supply (BJT)
« Reply #29 on: August 31, 2008, 09:40:45 PM »
nakakalitowh naman ang 'powh' mo...
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Offline rdpzycho

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Re: Power supply (BJT)
« Reply #30 on: August 31, 2008, 09:47:14 PM »
anong concern niyo sa ripple?
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Offline kheich

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Re: Power supply (BJT)
« Reply #31 on: August 31, 2008, 09:54:02 PM »
Quote from: rdpzycho on August 31, 2008, 09:47:14 PM
anong concern niyo sa ripple?
sa ripple.. db pag po tinaasan mu ung value ng capacitor.. liliit ang ripple.. peo tataas din pu kea ang value nun sa osci para makuha q ung reqrd Voltage which is 19V?

 
Quote from: marcelino on August 31, 2008, 09:40:45 PM
nakakalitowh naman ang 'powh' mo...

ay sorry po sir kung nalito po keo sakin ^^,
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Offline rdpzycho

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Re: Power supply (BJT)
« Reply #32 on: August 31, 2008, 09:58:12 PM »
it's easier to understand the word scope for oscilloscope rather than osci which is much more a shortcut for an oscillator.

kung kinakapos lang kasi dahil kulang 'yung charge sa capacitor may possibility na tumaas ang output. ano ba value nung capacitor niyo?

check niyo rin kung bumababa 'yung AC output sa winding. pag 'yun ang bumababa, kailangan palitan 'yung transformer.
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- Clayton Paul

Offline kheich

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Re: Power supply (BJT)
« Reply #33 on: August 31, 2008, 10:04:40 PM »
Quote from: rdpzycho on August 31, 2008, 09:58:12 PM
it's easier to understand the word scope for oscilloscope rather than osci which is much more a shortcut for an oscillator.

kung kinakapos lang kasi dahil kulang 'yung charge sa capacitor may possibility na tumaas ang output. ano ba value nung capacitor niyo?

check niyo rin kung bumababa 'yung AC output sa winding. pag 'yun ang bumababa, kailangan palitan 'yung transformer.

ok po sorry sir... ang computed value q is for 3300 microF.. as of now sa output na 18-19v .. and capacitor ko is 5700 microF ( 4700 and 1000 microF) aun powh.. so more or less dapat ung transformer ang bantayan q po...tma po ba?
sir salamat pu ng madami sir ^^,
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Re: Power supply (BJT)
« Reply #33 on: August 31, 2008, 10:04:40 PM »
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