The Only Two Things That Create Voltage Spikes скачать в хорошем качестве

The Only Two Things That Create Voltage Spikes

If your board randomly resets, glitches, or behaves intermittently, there’s a very good chance this equation is involved: V = L · di/dt There’s nothing exotic about it. We all learned it in Circuits 1. But most engineers don’t intentionally design around both sides of it. In this video, I use a simple LED + MOSFET circuit to demonstrate: • How parasitic inductance (L) causes large voltage droop • Why fast switching edges (di/dt) make it worse • How gate resistors reduce microcontroller stress • Why “it works most of the time” is not good enough • How 1% edge cases become long-term production headaches You’ll see: A microcontroller pin exceeding safe current VGS operating right at threshold margins Intermittent behavior that would only show up on a small percentage of boards How shortening the loop with proper decoupling dramatically reduces the spike This is the kind of issue that can live inside a company for years — quietly patched by technicians — until someone finally decides to fix it properly. The absence of failure does not mean the design is correct. Next video: we scale this up to ~6 amps and look at soft start behavior in a real power scenario.