Pulse motor with magnetic reed switch

A pulse motor created from a magnetic reed switch made from an ink pen, a rotor made from a thread spool and neo magnets, and an electromagnet made from an automotive relay, 2 prescription bottles and a small block of wood. It runs on 12 volts.

Category:

Science & Technology

Tags:

• motor
• magnet
• pulse
• spool
• magnetic switch
• reed switch
• magnetic reed switch

[EastcoastTinker]

Nice job. Would like to replicate this, but can only get my hands on a Radioshack reed switch. How would that be installed in this type of setup?

[Bobbertt3d]

@EastcoastTinker Use a normally open magnetic reed switch and adjust it's position so that the switch closes at the right time when a magnet approaches the coil. The magnet that I sensed with the switch is 180 degrees opposite the coil. When you find that sweet spot, the motor will spin good.

[may7charlie]

Hi

Where can I find reed switch which does not get burnt ?

I am making electromagnet which needs to be on/off by fast rotating magnet. Power supply is 12V car battery. Thanks Charlie

[Bobbertt3d]

@may7charlie Reed switches can't handle the current associated with that application without help. Try this: Use a magnetic reed switch or a Hall effect switch with at lower voltage (say 4 or 5 volts) to detect the magnet. Then use the output to turn on a power transistor for the heavier load. A 2N3055 or TIP42 or similar should work. You may also need a 1N4007 diode reverse shunted across the power connectoins of the trannie to help protect against burnout from BEMF.

[IcemanC130]

This is really cool!

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[ChriznoProduction]

u should show us how to make one

[piestrak]

coooool!