M
Michael
- Jan 1, 1970
- 0
I have an idea, but i'm not an expert on switchmode power supplies so
I'd like to run it past you guys.
I wish to make a portable high powered stereo for camping trips using
a car audio amplifier (2x60W), a lead acid battery and either a car
head unit or cd walkman.
These amplifiers use a switchmode supply which generates approx +/-
30V rails.
I was thinking, I could have adjustable rails, with a slow decay (say
3-4V per min) and a fast attack which would be triggered by a clipping
sensor on the amp.
This would increase the battery life at lower listening levels, where
30V of headroom would waste a lot of power.
Would there be a problem with dropping voltage when the transformer
is wound to create 30V rails, providing the PWM circuit can generate
short enough pulses?
Michael.......
I'd like to run it past you guys.
I wish to make a portable high powered stereo for camping trips using
a car audio amplifier (2x60W), a lead acid battery and either a car
head unit or cd walkman.
These amplifiers use a switchmode supply which generates approx +/-
30V rails.
I was thinking, I could have adjustable rails, with a slow decay (say
3-4V per min) and a fast attack which would be triggered by a clipping
sensor on the amp.
This would increase the battery life at lower listening levels, where
30V of headroom would waste a lot of power.
Would there be a problem with dropping voltage when the transformer
is wound to create 30V rails, providing the PWM circuit can generate
short enough pulses?
Michael.......