27-08-2019, 08:38 AM
The decoupling capacitors need to be as close to the IC pins as is possible.
Note that Veroboard has quite thin tracks: The track of a stripboard is 2mm (78 mil) wide. The holes drilled into them are 0.8mm (31 mil) in diameter, leaving a total (0.6mm [23 mil] on each side of the hole) of 1.2mm (47 mil) for a maximum usable current path. Thickness of Veroboard/Stripboard at 1 ounce per square foot is 35 microns (1.37 mil) thick.
Assuming that you have an ambient of 25 degrees C (77F) and can tolerate of up to 50 degrees C (90F) more, then fed into a PCB track width calculator it spits out:
5.4 Ampere
So, at 5A you are near the recommended limit for the track size. I'd bulk up the tracks with either plain solder or a bit of tinned copper wire buried in solder on the IN and OUT tracks.
Edit: ISTR that Veroboard has a recommended maximum current capacity of 2A, but I can no longer find that - the product is now owned by Vero Technologies Ltd whose website is useless.
Note that Veroboard has quite thin tracks: The track of a stripboard is 2mm (78 mil) wide. The holes drilled into them are 0.8mm (31 mil) in diameter, leaving a total (0.6mm [23 mil] on each side of the hole) of 1.2mm (47 mil) for a maximum usable current path. Thickness of Veroboard/Stripboard at 1 ounce per square foot is 35 microns (1.37 mil) thick.
Assuming that you have an ambient of 25 degrees C (77F) and can tolerate of up to 50 degrees C (90F) more, then fed into a PCB track width calculator it spits out:
5.4 Ampere
So, at 5A you are near the recommended limit for the track size. I'd bulk up the tracks with either plain solder or a bit of tinned copper wire buried in solder on the IN and OUT tracks.
Edit: ISTR that Veroboard has a recommended maximum current capacity of 2A, but I can no longer find that - the product is now owned by Vero Technologies Ltd whose website is useless.
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