500w power amplifier

[nix]

2sc5200 & 2sa1943

hi longthrow,

Do you have any idea where we can buy guaranted parts 2sc5200 & 2sa1943 transistor here in cebu?

regards,
nix

 

[ljm_ljm]

are youe want to use + -100V?

 

[AndrewT]

parts 2sc5200 & 2sa1943 transistor

hi,
the 1943/5200 have an SOA that drops drastically above 40Vdc.
They work very well in amplifiers that use supply rails of +-20Vdc to +-55Vdc.
at +-60Vdc and above they have very little current capability to drive normal 8ohms speakers and even less to drive 4ohm speakers.

 

[nix]

hi,

hi AndrewT,

Do you have any idea for the replacements of this parts?
Thanks.

regards,
nix

 

[AndrewT]

ONsemi mjl & njl are good. Some 250V & 350V devices available with very good SOA @ >50V

 

[engel dela pena]

2sc5200 & 2sa1943...PhP65-80

65-80 pesos?
are there store in manila selling at this price?

 

[longthrow]

cebu only don't know 'bout manila, should be cheaper there.

 

[engel dela pena]

apex,
i can't do step driver
but i can do bridge

 

[france]

apex, i can't do step driver but i can do bridge

@angel

i think this is ur project B500 by apex..

 

[engel dela pena]

Wish ldr + led will work

 

[wcleungoo]

500W amplifier circuit

Did anyone try this circuit before ?

http://rapidshare.com/files/21526458/500W.zip.html