scheme ups

[Dr.L]

as avea nevoie de schema unui ups,si anume:

MGE Pulsar ESV8+

pe placa de baza scrie

098-08806-045103250400-A9-926(pe o eticheta galbena)MAIN-8823MG

interiorul arata asa

in mare as vrea sa-i pun intrerupatoare pe iesiri(comandate prin relee) si in caz de functionare pe baterie,sa se opreasca daca n-are sarcina(are traductor de curent si in gol consuma ~35w)

 

 

si a inca unui ups,mai mic,pe carcasa caruia scrie si contine o placa

main-87xx/module098-17138-00-s6C43120-00-5(probabil0)2)asta scrie pe o eticheta aplicata)

iar singurul integrat este un integrat cu 30 picioare

SC552928CSP618-04040-030L61NMXAA0437

astuia as vrea sa-i pun o reactie(ca tensiunea pe iesre variaza in functie de sarcina(mai exact,creste de la 180v la 220v cu cat e mai mare sarcina) si daca reusesc cu reactia,i-as face si tensiunea deiesire variabila(macar intre 180 si 220v)

si as vrea sa stiu si ce fel de semnal ajunge la traf,ca daca e o frecventa mare modulata la 50hz,traful pe tole ar merge inlocuit cu unul de ferita (traful original e asta)

[Dr.L]

translatand siteuri rusesti,am aflat ca cel de-al 2-lea ups se opreste singur dupa 5 minute,daca nu are sarcina--am testat si asa este

pana acum n-am gasit nici o schema,despre integrat nici atat,dar mai am informatii despre sasiu de studiat

 

intre timp,am facur rost de un ups foarte asemanator,Mustek PowerMust 600VA Plus,are aceeasi carcasa si acelasi traf,numai ca are alt sasiu si anume:

MAIN873X/4X/5X PRO098-18018-0-S218046-01-338

dupa sigurante,este modulul 4x

 

intergtaul e un smd:

789104A5870309em03

ii lipsesc insa niste piese,dar se pare ca sunt la fel ca pe celalalt,sper sa-l refac

dup-aia vreau sa-l fac cu tensiune reglabila si as vrea sa-i dezactivez oprirea temporizata in lipsa sarcinii

probabil ca tot la rusi o sa gasesc ceva informatii

[Vizitator afstoupe]

Trust UPS 500 13505; Similar Models Ippon Back Power Pro 400/500/600/700, Plus Brozer 600, Power Must Mustek 600VA Plus, Orvaldi 600. Control Circuit Board 94V0 SUNG WEI 06V0-A, MAIN-873X/4X/5X PRO, 098-18018-01-S2, 17034-01-352. Suffered Catastropic failure, during investigation of battery backup fault; D23,24 (1N4007), Q14,19,21 (SMD 1PH), Q20,23,24,25 (ST P60NF) and U1 (NEC uPD789104A 587 0314EM02) had all failed, mostly low resistance or open circuit. Replacement of D23,24 presented few problems, 2N3705 was found to be suitable for Q14,19,21 and HUF75337P3 for Q20,23,24,25. However, a replacement for U1 is proving problematical, as it has to be programmed for the specific application. Are these (and other spares) available? If so, where from? Failing a replacement U1, a replacement board (at least with the surface mount components fitted) would enable a repair to be effected. Any help would be appreciated.