ac gauge readings: Build Your Own Pulse Motor – No Solderin

Papa Bale hooks up three coils in series on a single battery, spins the 9-magnet rotor, and captures wild voltage spikes on the scope. 500–560 V peaks from a simple setup with 12k, 22k, and 750-turn coils on iron cores.

Key takeaways

• A single battery is enough to run and generate from this pulse motor setup
• Solid iron cores dramatically increase voltage output on the heavier gauge coil
• Nine magnets on the rotor create a dense, spiky waveform instead of a clean sine
• Series wiring of multiple coils (26, 20, 32 gauge) smooths operation and stacks turns
• Back-EMF spikes hit 520–560 V on the scope with no load
• The whole build uses no soldering – just hook-up wire and clips

Short bench session with a single battery driving a multi-coil pulse motor. Got 560 V spikes on the scope and a smooth rotor thanks to series wiring. Iron core on the 20-gauge coil made the biggest difference. Classic messy Papa Bale experiment.

From the spoken experiment

The following notes stay close to what was said in the video about ac gauge readings:

> yo what's up everybody this is Papa Bale and welcome to the channel um I'm trying something a little different than I've been doing uh lately I've been I hooked these three coils in series we're going to use that as our generator battery kind of thing or can you describe the coils so we have uh 12,000 turns of 32 here 22,000 turns of 32 here and we have I think 750 turns of 20 gauge and then that's a solid iron core this is a solid iron core all right which helps the 20 gauge do voltage a lot helps it a lot without that it wouldn't generate much voltage at all all right so here we go 20 volts here we go actually let's get some uh readings up here that's we going to [Music] do scope reading for the black here this this black coils all right here we go heck yeah because we got nine magnets on the rotor we got a lot more waves and a standard sine wave form nice there we go look at that you…

Builder checklist

• Confirm trigger/sensor timing before chasing higher voltage
• Watch heat on coils and transistors during longer runs
• Record voltage and behavior at each change (one variable at a time)

Related on this site

• Pulse motor resources & glossary
• Start here if you're new
• Back EMF guide
• How to build a pulse motor

Related on this site

• Reading Oscilloscope Output on a Pulse Motor — Directly matches the scope section and 500-560 V spikes shown in transcript
• How to Wind Coils for a Pulse Motor (Step by Step) — Covers the exact turn counts (12k, 22k, 750 turns) and gauges used
• Understanding Back EMF in Pulse Motors — Explains the 520-560 V spikes captured on the black coil
• The Bedini SSG Circuit: A Complete Guide for Beginners — Setup described is a stripped-down Bedini-style series coil arrangement
• Can a Pulse Motor Charge Batteries? What Experiments Show — Addresses whether the single-battery spikes can charge another battery
• I Finally Got My Pulse Motor Running (Reed Switch) — Similar successful running test, different trigger method

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*Generated from video transcript (hash `80d96d093c8d…`).*