viewsonic lcd monitor caps

[joshnz]

Will these do?
2 x 470uf @ 25v 10x16 CapXon KF - Panasonic FM
1 x 470uf @ 10v 8x11.5 CapXon KF - Panasonic FM
2 x 1000uf @ 10v 10x16 CapXon KF - Rubycon ZLJ
1 x 2.2uf @ 50v 5x11 CapXon KF - Nichicon PS
1 x 22uf @ 50v 6.3x11 CapXon KF - Panasonic FM

[retiredcaps]

Re: viewsonic lcd monitor caps

Will these do?
2 x 470uf @ 25v 10x16 CapXon KF - Panasonic FM
1 x 470uf @ 10v 8x11.5 CapXon KF - Panasonic FM
2 x 1000uf @ 10v 10x16 CapXon KF - Rubycon ZLJ
1 x 2.2uf @ 50v 5x11 CapXon KF - Nichicon PS

I would use Panasonic FC for the 2.2uF 50V cap.

http://www.digikey.com/product-detai...0313-ND/266322

and Panasonic FM for the 1000uF 10V

http://www.digikey.com/product-detai...2353-ND/613714

Note: I have not done the usual esr and ripple comparisons while doing the above two suggestions.

[joshnz]

Re: viewsonic lcd monitor caps

I just looked at datasheet again this time found ripple current
470uf @ 25v 10x16 1010ma 0.076Ω CapXon KF 1790ma 0.026Ω Panasonic FM

470uf @ 10v 8x11.5 550ma 0.150Ω CapXon KF 950ma 0.056Ω Panasonic FM

1000uf @ 10v 10x16 1040ma 0.076Ω CapXon KF 2000ma 0.038Ω Rubycon ZLJ

2.2uf @ 50v 5x11 55ma 2.80Ω CapXon KF 55ma 4.5Ω Nichicon PS

22uf @ 50v 6.3x11 150ma 1.30Ω CapXon KF 406ma .13Ω Panasonic FM

[jetadm123]

Re: viewsonic lcd monitor caps

Nichicon PW 2.2uf 50V comes close at 55ma 3.0 ohms.

[joshnz]

Re: viewsonic lcd monitor caps

1000uf @ 10v 10x16 1040ma 0.076Ω CapXon KF, 1050ma 0.068Ω Panasonic FC EEUFC1A102
1 x 2.2uf @ 50v 5x11 55ma 2.80Ω CapXon KF, 45ma 1.3Ω Panasonic FC EEUFC1H2R2
I order from http://newzealand.rs-online.com/

[joshnz]

Re: viewsonic lcd monitor caps

2.2uf @ 50v 5x11 55ma 2.80Ω CapXon KF, 55ma 4.5Ω Nichicon PS UPS1H2R2MDD wierd there datasheet says 4.5Ω

[mockingbird]

Re: viewsonic lcd monitor caps

Don't unbalance the pi filters... If you use caps with vastly differing ESR on the input/output of the coil, you will add ripple to the circuit...

Post a photograph of the board indicating which caps are where.

[joshnz]

Re: viewsonic lcd monitor caps

470uf @ 25v near transformer mosfets (bloated) no choke on this rail???
470uf @ 25v at secondary output (bloated) no choke on this rail???
470uf @ 10v after choke (bloated)for 5v rail
1000uf @ 10v before choke 5v rail
1000uf @ 10v before choke 5v rail
2.2uf @ 50v across optocoupler led I think
22uf @ 50v startup cap

[mockingbird]

Re: viewsonic lcd monitor caps

The ESR of the FM and ZLJ you picked are close enough it seems... Be aware when ordering Rubycon from Newark that often, the prices quoted are for multiples of many thousands and are not for sale individually or in small quantities. What is the model of your PSU? Maybe someone has already posted a pic.

[joshnz]

Re: viewsonic lcd monitor caps

Ok i had a brain fart earlier I was looking at PS not PW
2.2uf @ 50v 5x11 55ma 2.80Ω CapXon KF, 55ma 3.0Ω Nichicon PSUPW1H2R2MDD

22uf @ 50v 6.3x11 150ma 1.30Ω CapXon KF 175ma .80Ω Panasonic FC EEUFC1H220

470uf @ 10v 8x11.5 550ma 0.150Ω CapXon KF 950ma 0.056Ω Panasonic FM EEUFM1A471

470uf @ 25v 10x16 1010ma 0.076Ω CapXon KF 1050ma 0.068Ω Panasonic FC EEUFC1E471

1000uf @ 10v 10x16 1040ma 0.076Ω CapXon KF, 1050ma 0.068Ω Panasonic FC EUFC1A102

[mockingbird]

Re: viewsonic lcd monitor caps

470uf @ 10v 8x11.5 550ma 0.150Ω CapXon KF 950ma 0.056Ω Panasonic FM EEUFM1A471
1000uf @ 10v 10x16 1040ma 0.076Ω CapXon KF, 1050ma 0.068Ω Panasonic FC EUFC1A102

If this is indeed the only pi filter, then this looks fine to me...