Will skinny-leg diode restrict amperage compared to fat-leg bridge rectifier?
Hi All,
I want to do some modifications to my power amplifier, to see if i can hear an improvement in sound...but have come across a potential issue.
I want to replace the main bridge rectifier with zero recovery time SiC diodes.
I have a fear that if i replace the fat-legged bridge rectifier (Image 1 below), with a Cree SiC diode assembly, like in Image 2 below, that the skinny legs of the Cree diodes will restrict amperage, even though the Cree diodes are rated at the same amperage as the fat-legged bridge rectifier.
What's your peoples take on this?
Image 1 - fat legged bridge rectifier
Image 2 - skinny legged Cree diode assembly
There's absolute maximum current capacity, and then there's practical, does it matter in my circuit capacity. Depending on the current actually flowing there may be an absolute drop in voltage, but it may not matter. Like, say you detected 0.005 V difference across the wiring. Would you give up the other reasons for using the advanced rectifier? Low noise, low forward voltage, fast switching doides are generally preferred in audio. |
@erik_squires good point, thanks! looks like I will now go ahead with my plan! |
The 'fat legs' are for mechanical connections to the rectifier, either quick connects or soldering, and do not reflect current carrying capacity. If the diameter of the Cree assembly leads is 1mm or more they will easily carry up to 35 amps. Diodes do not carry steady state current, they only pass 1/2 cycle or else they'd melt. |
