any body have details of 450 watts TIP142& TIP147Transister amp

[knairkuttan]

4 numbers of TIP142 &147 can deliver 450 watts rms is it true? if yes help me to build it...............

[Aldotin]

Originally Posted by knairkuttan

4 numbers of TIP142 &147 can deliver 450 watts rms is it true? if yes help me to build it...............

The answer is a big NO.

2 pairs (4 pcs) of TIP142/TIP147 is OK for a ~70W RMS amplifier.

[knairkuttan]

will u plz give me the details

[AUDISOUL]

Hi Friend,

Just for your known search the schematic by this board its i think very simple. I dont know where i founded this design

[knairkuttan]

Originally Posted by AUDISOUL

Hi Friend,

Just for your known search the schematic by this board its i think very simple. I dont know where i founded this design

total 10 transister ..............?

[sakis]

god ...... drugs is a terrible thing .....

[ilimzn]

Actually, it is possible - using +-50V power supplies and bridge mode. Such an amp could provide about 90V peak into an 8-ohm load, equivalent to about 500W RMS.
It would, however, need many devices in parallel to satisfy SOA and cooling requirements, and of course, the output stage would never work truly optimized due to integrated resistors in the darlington package.
If it was a pure 8 ohm resistive load and the supplies were limited to provide 80V peak into it, and they were cooled to sub-zero temperatures, then maybe 2 pairs could actually produce 400W RMS :P

[poynton]

Originally Posted by AUDISOUL

Hi Friend,

Just for your known search the schematic by this board its i think very simple. I dont know where i founded this design

You could try sending a PM to member, isa_olcer, whose name is on the board !

Andy


.