Uploaded July 2026 | Updated September 2026, 3 hours ago

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Reducing power loss by changing voltage between switch-mode and linear regulator …
↓↓↓ Complete description, time index and links below ↓↓↓

Last time we went over several alternatives for a power architecture for two motors with two batteries (link below). Anyway, during the heatwave I’ve noticed that the linear regulator of my power supply gets quite hot. So let’s fix that.

First I explain the problem and we measure how much current the motor controller is consuming. Then we do some calculations to quantify my temperature “feelings”. Finally we come up with a solution that reduces the dissipated power.

00:00 Intro – let’s improve the power supply
00:43 It’s hot – the linear regulator that is
03:12 Current – consumed by motor controller
03:48 Calculation – power dissipation & temperatures
07:26 Improvement – lower supply voltage
10:09 Wrap-up – that’s it for today, bye

Full Fly-by-Wire Electric Outboard youtube.com/playlist?list=PLwq-2MnM58FKvpYgFXgNCjlKo14L0KI16
Full Fly-by-Wire Electric Outboard (36): Power Architecture Overview youtu.be/HKkiZ-w6IA4
Full Fly-by-Wire Electric Outboard (11): Power Supply Circuit (EMC Compliant) youtu.be/5_Q-G0tgG1o
Full Fly-by-Wire Electric Outboard (18): Chasing Noise & Intermittent Errors (1) youtu.be/QfDVx435YOE
Full Fly-by-Wire Electric Outboard (19): Chasing Noise & Intermittent Errors (2) youtu.be/WoKpIrfGIDM
Full Fly-by-Wire Electric Outboard (38): Steering Torque Measurement youtu.be/4EX6CI2aP2o

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