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Popravka Osciloskop BWD 539d
#3
@Papak prvo si trebao da pogledas semu ovog osciloskopa pa onda da dajes odgovor.



@djuma89
Ovaj osciloskop nema bloking oscilator za dobijanje ubrzavajuceg visokog napona, vec se taj napon dobija kaskadiranjem jednog od sekundarnih napona mreznog transformatora(550V ACA). Diode D351, D352, D353 sa pripadajucim kondenzatorima prave taj napon (oko 2.5KV) koji preko otpornika R358 ide ide na anodu cevke. Nekako bi trebao da proveris prisustvo ovog napona ali to je malo teze posto klasicni multimetri, najcesce, mere do 1000V DC.
Mozes jednostavno napraviti prirucnu VN sondu kao dodatak multimetru. Uzmes 9 otpornika od 10Moma i vezes ih na red sa crvenom pipalicom multimetra. Tako ces napraviti naponski razdelnik 10:1 i prosiriti merni opseg do 10KV!!!. Podrazuneva se da je unutrasnja otpornost multimetra 10Moma.
Naravno da bi koristio ovakvu sondu za visoke napone, neophodno je da sve to lepo izolujes i zalijes nekom masom (za pocetak moze i parafin). Za merenje ovih 2.5KV, dovoljno je samo, da te otpornike stavis u neku plasticnu cevcicu.

Ostale napone mozes meriti direktno jer je sledeci najveci -850V
Obavezno proveri i napon grejanja cevke (6.3V AC) i ako mozes da vidis sa zadnje strane da li cevka svetli unutra ( trebalo bi da se vidi zickasto svetlo).

U svakom slucaju, ako se ne snadjes, kod mene uvek imas opciju besplatne popravke.
Novac je sredstvo a ne cilj.
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Messages In This Thread
Popravka Osciloskop BWD 539d - by djuma89 - 02-03-2022, 10:23 PM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-03-2022, 11:47 PM
RE: Popravka Osciloskop BWD 539d - by Gosha - 02-04-2022, 10:35 AM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-04-2022, 01:13 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-04-2022, 01:13 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-04-2022, 03:18 PM
RE: Popravka Osciloskop BWD 539d - by NIXIE - 02-04-2022, 03:28 PM
RE: Popravka Osciloskop BWD 539d - by Gosha - 02-04-2022, 03:50 PM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-04-2022, 04:37 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-04-2022, 05:36 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-04-2022, 05:58 PM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-04-2022, 10:00 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-05-2022, 10:05 AM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-05-2022, 10:42 AM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-05-2022, 02:16 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-05-2022, 06:41 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-06-2022, 03:04 PM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-07-2022, 01:32 AM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-07-2022, 09:06 AM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-07-2022, 11:06 AM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-07-2022, 12:36 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-07-2022, 01:04 PM
RE: Popravka Osciloskop BWD 539d - by Papak - 02-07-2022, 07:25 PM
RE: Popravka Osciloskop BWD 539d - by ddanijel - 02-07-2022, 07:45 PM
RE: Popravka Osciloskop BWD 539d - by mikikg - 02-07-2022, 09:17 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-07-2022, 10:21 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-08-2022, 09:44 AM
RE: Popravka Osciloskop BWD 539d - by progster - 02-08-2022, 10:06 AM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 02:25 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-08-2022, 03:03 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 03:23 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-09-2022, 08:57 AM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 03:52 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-08-2022, 04:47 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 05:06 PM
RE: Popravka Osciloskop BWD 539d - by pinco - 02-08-2022, 06:58 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-08-2022, 05:24 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-08-2022, 07:05 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 08:08 PM
RE: Popravka Osciloskop BWD 539d - by pinco - 02-08-2022, 08:17 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-08-2022, 08:27 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-08-2022, 09:23 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-09-2022, 10:51 AM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-09-2022, 12:48 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-09-2022, 01:36 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-09-2022, 08:15 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-09-2022, 08:15 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-10-2022, 12:02 AM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-13-2022, 02:27 PM
RE: Popravka Osciloskop BWD 539d - by branko tod - 02-10-2022, 01:25 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-10-2022, 01:57 PM
RE: Popravka Osciloskop BWD 539d - by emiSAr - 02-10-2022, 02:50 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-10-2022, 03:29 PM
RE: Popravka Osciloskop BWD 539d - by emiSAr - 02-10-2022, 04:02 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-10-2022, 04:43 PM
RE: Popravka Osciloskop BWD 539d - by ddanijel - 02-10-2022, 05:46 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-10-2022, 06:19 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-10-2022, 06:52 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-10-2022, 07:01 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 02-13-2022, 09:43 PM
RE: Popravka Osciloskop BWD 539d - by vladd - 02-13-2022, 11:52 PM
RE: Popravka Osciloskop BWD 539d - by Macola - 02-14-2022, 01:47 PM
RE: Popravka Osciloskop BWD 539d - by djuma89 - 03-02-2022, 10:41 AM
RE: Popravka Osciloskop BWD 539d - by BeliNinja - 03-02-2022, 12:28 PM
RE: Popravka Osciloskop BWD 539d - by Boban - 03-02-2022, 12:32 PM

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