How I Can Bridge This

broka · 15th November 2006, 08:15 PM

hey friends, i have two STK4050V, and i have this diagram, but , i need bridge this power amplifier, for get more power..how i can bridge this CI???????

MikeB · 15th November 2006, 08:25 PM

I guess, forget it... Datasheet says: "Recommended Operational Conditions, RL = 8ohm"
Bridged operation halfs the load seen by the amp. Bridging this chip is likely to overload it.

THD, 0.08% 1W 1khz into 8ohm non inductive, are they kidding ?
I would accept that without current mirror, not with...

Mike

jerluwoo · 15th November 2006, 08:31 PM

I once had a Panasonic stereo using a stk4131II which is a 20+20 watt version of this chip. I bridged it. It lived about 2 hours.

lineup · 15th November 2006, 08:35 PM

.

as said, bridge would override currents output
that is good for this IC

recommended voltage supply is +-66 Volt
for deliver something like 200 watt into 8 ohm
even if some data is tested by using +-80 Volt
and absolute max is +-95 Volt

possibly
you could parallel two STK4050V in some clever way
and so get lots of power into 4 ohm

but there are better options for get same output power in 4 ohm
by other kits and projects

broka · 15th November 2006, 09:05 PM

clear, do I like the idea of other projects, but do I have in my power these two integrated, but is the question, do you have some diagram to be able to Bridge these CI?..., I refer that I can get myself several of these CI, but I would like to know as the bridge, or that somebody becomes trained a diagram???

I would like to make bridge tests...

MikeB · 15th November 2006, 09:11 PM

If you have 2 of them, build a stereo amp ?

Mike

jerluwoo · 15th November 2006, 11:26 PM

It may be possible to bridge them in this manner and have them survive into 8 ohms only but no garentees. Requires 4 of them.

broka · 16th November 2006, 12:27 AM

no, I want to make a bridge, but that it is mono,i want mono phonic amplifier, not that it is stereo, the idea it is to add 200w + 200w in a single speaker...thanks

broka · 16th November 2006, 12:37 AM

jerluwoo:

but if I require 4 of these integrated, then which serious the complete connection of the CI, since each CI, it has 18 pins??????

Leolabs · 16th November 2006, 12:48 AM

Hi,broka.You should get more chips and configure them in BPA.

15th November 2006, 08:35 PM	#4
lineup diyAudio Member Join Date: Dec 2005 Location: the north	. as said, bridge would override currents output that is good for this IC recommended voltage supply is +-66 Volt for deliver something like 200 watt into 8 ohm even if some data is tested by using +-80 Volt and absolute max is +-95 Volt possibly you could parallel two STK4050V in some clever way and so get lots of power into 4 ohm but there are better options for get same output power in 4 ohm by other kits and projects __________________ lineup

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15th November 2006, 08:25 PM	#2
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	I guess, forget it... Datasheet says: "Recommended Operational Conditions, RL = 8ohm" Bridged operation halfs the load seen by the amp. Bridging this chip is likely to overload it. THD, 0.08% 1W 1khz into 8ohm non inductive, are they kidding ? I would accept that without current mirror, not with... Mike

15th November 2006, 08:31 PM	#3
jerluwoo diyAudio Member Join Date: Feb 2006 Location: Ashland,Ky U.S	I once had a Panasonic stereo using a stk4131II which is a 20+20 watt version of this chip. I bridged it. It lived about 2 hours.

15th November 2006, 09:05 PM	#5
broka diyAudio Member Join Date: Sep 2006	clear, do I like the idea of other projects, but do I have in my power these two integrated, but is the question, do you have some diagram to be able to Bridge these CI?..., I refer that I can get myself several of these CI, but I would like to know as the bridge, or that somebody becomes trained a diagram??? I would like to make bridge tests...

15th November 2006, 09:11 PM	#6
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	If you have 2 of them, build a stereo amp ? Mike

16th November 2006, 12:27 AM	#8
broka diyAudio Member Join Date: Sep 2006	no, I want to make a bridge, but that it is mono,i want mono phonic amplifier, not that it is stereo, the idea it is to add 200w + 200w in a single speaker...thanks

16th November 2006, 12:48 AM	#10
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Hi,broka.You should get more chips and configure them in BPA.

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