I use F5 without termistors with BUZ900/905 for few weeks now.
At 2A each with 23.5VDC from CLC supply.
No problemski amps played all day with 4 ohm speakers.
But my heatsinks are big and hot 48-49*C with 22*C room temp.
I try 100R feedback resistors but is not a my taste at all so
I comeback to 50R.Trafos 225VA for each monoblock.Looks like
I limited now by 2.5A chokes in PS :>(
At 2A each with 23.5VDC from CLC supply.
No problemski amps played all day with 4 ohm speakers.
But my heatsinks are big and hot 48-49*C with 22*C room temp.
I try 100R feedback resistors but is not a my taste at all so
I comeback to 50R.Trafos 225VA for each monoblock.Looks like
I limited now by 2.5A chokes in PS :>(
where to measure that bias,precisely?
One measures the voltage across the mosfet's sources resistors.
Look at the PDF...
You can decrease the voltage a bit, but remember that the
capacitance of the devices is a function of the Vds, the voltage
from Drain to Source, and below 5 volts Vgs or so the
capacitance gets excessive.
I did not understand this sentence.Which device ? when the voltage drops,how capacitance change ?
Ahh OK....
I just don't want to hear it go klunk when it comes out of class A @ 2 ohms ...
it's not ohms that defines the ClassA limit.
The bias current determines the ClassA limit.
Set bias to 1.3A and the ClassA limit is 2.6Apk.
If you need to know how that translates for 2r0 then the output voltage would be 5.2Vpk and the delivered power would be 13.5Wpk.
If the signal were a sinewave then the average power would be 6.7W
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