"DIY 1.5KW Bipolar Class-H"

[TonyTecson]

CFR if you are poor guy from Manila,???

pls never under estimate PILIPINO Pls!!

meron kang source ng metal films? relax ka lang.....

 

[kASD]

CFR if you are poor guy from Manila,???

pls never under estimate PILIPINO Pls!!

I am just telling economic condition , not under estimating............both are different things.

Single side pcb= Cool

Double side pcb= Headache

 

[kASD]

yup, metal films are quite expensive in manila so i use them only for gain determining resistors, all else are carbon films......

Yeah.........You got the logic

 

[TonyTecson]

i am one such poor guy from manila.... cause up to now i haven't placed any orders for pcb yet.....

 

[kASD]

i am one such poor guy from manila.... cause up to now i haven't placed any orders for pcb yet.....

No you are rich guy

 

[andrewlebon]

hi workhorse
greetings is it possible to show how transistors are attached to heatsink
so one can get an idea because i think fitting transistors to heat sink will be major headache
thanking you
andrew lebon

 

[kASD]

hi workhorse
greetings is it possible to show how transistors are attached to heatsink
so one can get an idea because i think fitting transistors to heat sink will be major headache
thanking you
andrew lebon

Similar to this.........

 

[TonyTecson]

No you are rich guy

i'd rather be a nice guy instead of rich.....

those aluminum extrusions, did you have them done in india? how much per ton?

 

[kASD]

i'd rather be a nice guy instead of rich.....

those aluminum extrusions, did you have them done in india? how much per ton?

Well, i hate being nice

I never gave a thought to the price of heatsink.

 

[TonyTecson]

hi, reason i asked is that there are at least 2 extruding plants in manila, is it possible to give me a cross-section drawing of your heatsinks....there are lots of diy'ers here that woulod love to get their hands on those heatsinks....

 

[kASD]

One per side is sufficient

 

[TonyTecson]

thanks workhorse.....

 

[NMOS]

sometimes I think its better to take class D for this high output power....class H is old technology an need big heatsinks too

 

[kASD]

Fox says high hanging grapes are sour

sometimes I think its better to take class D for this high output power....class H is old technology an need big heatsinks too

Class-AB is much more older and requires double the heatsink than H...............

 

[NMOS]

Class-AB is much more older and requires double the heatsink than H...............

Yes thats true,....but with class D you have much lower cost and better effeciency

 

[DILIP KUMAR]

STEPDRIVER

dear sir
hello can step driver of 1.5 kw amp be used with any other h class amp
1 on negative side is polarity of uf4007 going to 1.5k resistance correct do you
sell full kit of 1.5kuw amp
thanking you
dilip

 

[mkubawat]

Dear workhorse
can you please post SCHEMATIC WITH PART VALUES for front preamp and display mgmt
& power supply board (ac-ps-fanreg-protect_board)

 

[teslar]

Very best class H diy project.

Thank all for share schematics & PCb.

Regards

 

[kASD]

Dear workhorse
can you please post SCHEMATIC WITH PART VALUES for front preamp and display mgmt
& power supply board (ac-ps-fanreg-protect_board)

There is no display, pre-amp & power supply pcb or circuit for this amplifier.

 

[kASD]

dear sir

1 on negative side is polarity of uf4007 going to 1.5k resistance correct do you
sell full kit of 1.5kuw amp
thanking you
dilip

The polarity is right in the schematic. I don't sell any kits.