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Old 15th November 2006, 08:15 PM   #1
broka is offline broka  Chile
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Default How I Can Bridge This

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???????
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Old 15th November 2006, 08:25 PM   #2
MikeB is offline MikeB  Germany
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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
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Old 15th November 2006, 08:31 PM   #3
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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.
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Old 15th November 2006, 08:35 PM   #4
lineup is offline lineup  Sweden
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.

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
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Old 15th November 2006, 09:05 PM   #5
broka is offline broka  Chile
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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...
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Old 15th November 2006, 09:11 PM   #6
MikeB is offline MikeB  Germany
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If you have 2 of them, build a stereo amp ?

Mike
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Old 15th November 2006, 11:26 PM   #7
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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.
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Old 16th November 2006, 12:27 AM   #8
broka is offline broka  Chile
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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
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Old 16th November 2006, 12:37 AM   #9
broka is offline broka  Chile
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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??????
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Old 16th November 2006, 12:48 AM   #10
Leolabs is offline Leolabs  Malaysia
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Hi,broka.You should get more chips and configure them in BPA.
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