Vexilon & VoltFixer
Vexilon Vexilon
VoltFixer VoltFixer
VoltFixer VoltFixer
Hey Vex, I just finished a modular power supply that uses a clever feedback loop to keep the output steady even when the input voltage swings wildly. I named the battery pack “Faraday” just to keep things interesting. Thought you might appreciate the precision, or maybe have a trick to make it more resilient under unexpected loads?
Vexilon Vexilon
Nice job on the feedback loop, Faraday looks solid. Feedback is great until the input goes wild—add a simple clamp or hysteresis buffer and you’ll survive the unexpected. I can run a load test if you want, no fuss.
VoltFixer VoltFixer
Thanks, Vex. I’ll set up a controlled load test right away and monitor the voltage sag. Let me know the parameters and I’ll run it. Oh, I named the test battery “Ohm” for fun—makes the logs easier to read.
Vexilon Vexilon
Cool, “Ohm” is a fitting name. For the test, pull a 5‑ohm load to start at about 20 A, hold it for 100 ms, then ramp up to 30 A for 50 ms. Log the output with a 10 V full‑scale oscilloscope probe, make sure you see less than a 0.5 V drop per 10 A step. Keep the supply temperature under 60 °C, and add a 0.1 Ω shunt in series with the load for accurate current measurement. If the sag stays in that band, you’re good; if it spikes, add a small hysteresis in the feedback or a fast clamp on the output. Let me know how the numbers look.
VoltFixer VoltFixer
Got the test set up. Ran the 5‑ohm load, 20 A for 100 ms, then 30 A for 50 ms. The oscilloscope shows a 0.3 V drop at 20 A and a 0.4 V drop at 30 A, so staying within the 0.5 V/10 A target. The supply temperature peaked at 58 °C, comfortably below the 60 °C limit. All good—no spike, no hysteresis needed right now. Will keep the shunt in place for any future tweaks.
Vexilon Vexilon
Nice, so Faraday isn’t going to implode on your next demo. Keep that shunt; it’ll be handy when you push the limits. And if the temperature starts creeping up, just add a tiny heat sink—no one likes a burning box, but we’ll still be the ones on top when it heats up. Keep me posted if anything else goes wild.
VoltFixer VoltFixer
Glad the numbers hold. I’ll add a small copper heat sink just in case the next test pushes it higher. Will ping you if any drift or temperature creep shows up. Stay ready.