Re: Power from Amplifier
Bridge and get 300 -400 watts 8 ohms. ;-)
zox2003 said:I guess that with TL081 and emiter follower design I can reach 200W on 4 ohm with no problem ( 4 transistors-2 per rail).
Right?
Bridge and get 300 -400 watts 8 ohms. ;-)
zox2003,
Do you have another stage to provide additional voltage drive to the output stage?? If you don't the max you will get is 25W into a 4 ohm load, 100W bridged in an optimistic, perfect world.
That's assuming you are running the op amp off a +-15VDC supply. If you don't provide +- 15VDC and connect it to the rails the chip will explode. We're talking a big, loud snap with maybe a sizzle. Could be fun you know. I think jacco wants to watch as well.
-Chris
Do you have another stage to provide additional voltage drive to the output stage?? If you don't the max you will get is 25W into a 4 ohm load, 100W bridged in an optimistic, perfect world.
That's assuming you are running the op amp off a +-15VDC supply. If you don't provide +- 15VDC and connect it to the rails the chip will explode. We're talking a big, loud snap with maybe a sizzle. Could be fun you know. I think jacco wants to watch as well.
-Chris
zox2003 said:Amplifier construction:
TL081---tip29/30 (drivers)---2SA1302/2SC5200 ( OUTPUT)
Hi zox2003,
I think the 2SA1302 is a superseded transistor. The compementary to the 2SC5200 is the 2SA1943.
Hi zox2003,
So how much voltage swing will you have to the drivers? Hint: If you increase the supplies to +- 300VDC it won't change.
There is no more voltage gain between the op amp and the drivers. You are therefore restricted to the available output voltage from the op amp. Your extra supply voltage only generates heat in the output stage, nothing else.
-Chris
So how much voltage swing will you have to the drivers? Hint: If you increase the supplies to +- 300VDC it won't change.
There is no more voltage gain between the op amp and the drivers. You are therefore restricted to the available output voltage from the op amp. Your extra supply voltage only generates heat in the output stage, nothing else.
-Chris
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