For me it’s the simplicity of your working models that really resonates with me and makes me look at electronics in new and interesting ways. Always worth the time to watch your work. Thank you
I highly recommend using a diode in inverse parallel wiith your coil as they are a inductive load and inductive spiking due to them can easily destroy your transistor
I'm having trouble seeing how the coils are connected. I realize that they are connected in series to each other, but what is the first coil (furthest from rotating disc) connected to and what is the end of the second coil (closest to rotating disc) connected to? According to the diagram (around 2:25) it shows the coil being connected to the Drain (middle pin) of the MOSFET, but it doesn't appear to be connected there in the actual motor. Any advice/clarification would be appreciated. I love your channel and have replicated many of your projects. Thanks.
Yes I see. You can connect the coil as per the diagram (between positive and drain) but is the same if you connect it between sorce and negative). It wors equally well
That reminds me of the old hit and miss engines! The IRFZ44 has Vds of only 55v, so it may not last long without a snubber / freewheel diode across the coil..
Even if it is a simple setup, you should NEVER leave out the flyback diode when switching coils with semiconductors. Especially with MOSFETs which are even more susceptible to damage by voltage spikes.
I thought so too, but the irfz44 is avalanche rated, so the high voltage spike that happens when it turns off builds until it hits the zener voltage of the protection diode inside the irfz44. the current from the spike then flows through this, protecting the drain-source junction from breakdown, but at the cost of heating up. in this application if you put a flywheel diode across the coils you lose torque; as the flywheel diode conducts current through the coils and sustains a magnetic field for longer than we want it to. an RC damper circuit would be more appropriate
For me it’s the simplicity of your working models that really resonates with me and makes me look at electronics in new and interesting ways.
Always worth the time to watch your work. Thank you
Very nice video, congratulations on the new drill press
Very cool. I like the sound it makes. Sounds like an old hit and miss engine.
I highly recommend using a diode in inverse parallel wiith your coil as they are a inductive load and inductive spiking due to them can easily destroy your transistor
Super model, simple design, master piece techniques. Thanks for your efforts taken and sharing useful information, from Jawaharlal Bharat INDIA 🙏
Nice, you made a brushless DC motor. It's amazing how long it took for pioneers of electricity to figure that out.
I'm having trouble seeing how the coils are connected. I realize that they are connected in series to each other, but what is the first coil (furthest from rotating disc) connected to and what is the end of the second coil (closest to rotating disc) connected to? According to the diagram (around 2:25) it shows the coil being connected to the Drain (middle pin) of the MOSFET, but it doesn't appear to be connected there in the actual motor. Any advice/clarification would be appreciated. I love your channel and have replicated many of your projects. Thanks.
Yes I see. You can connect the coil as per the diagram (between positive and drain) but is the same if you connect it between sorce and negative). It wors equally well
Thank you!
That reminds me of the old hit and miss engines! The IRFZ44 has Vds of only 55v, so it may not last long without a snubber / freewheel diode across the coil..
This is really cool, it's kind like an electric imitation of a combustion engine
In fact these came before the IC engine
Cool drill. I wish your channel a lot of subscribers.
Even if it is a simple setup, you should NEVER leave out the flyback diode when switching coils with semiconductors. Especially with MOSFETs which are even more susceptible to damage by voltage spikes.
Yes that´s good advice!
I thought so too, but the irfz44 is avalanche rated, so the high voltage spike that happens when it turns off builds until it hits the zener voltage of the protection diode inside the irfz44. the current from the spike then flows through this, protecting the drain-source junction from breakdown, but at the cost of heating up. in this application if you put a flywheel diode across the coils you lose torque; as the flywheel diode conducts current through the coils and sustains a magnetic field for longer than we want it to. an RC damper circuit would be more appropriate
Josh Crampton
Nice clear explanation thank you Josh😀
IGBT transistors can easily withstand high back EMF spike !!!
Nice videos keep it up. You help me a lot in many ways.
Thanks for publishing these very interesting videos :-)
Very nice, I like your channel, can you controll the speed of the motor ?
Yes at the end I increase th espeed
Why do you use 2 coils when only one is acting ?
Nice video! Maybe some time in the future you could create an axial flux machine? Generator or motor? Would be very interesting to see.
Kind regrds!
Awesome video 😀😁😂👍
What is the voltage?
12 - 18 V
if you are using a mosfet why not use a hall effect sensor then?
I just had the reed switch at hand
Saudações. simples e funcional. o electromagnetismo move nosso mundo. parabéns. tudo de bom.
Nice !
😮👍👍👍👍👍👍👍👍👍👍
how useful - hurry up to apply for a patent. It will save the world climate.
lol
Face reveal
( ͡° ͜ʖ ͡°)
Did not expect such a meemy reply from you lol. Great vid. Great channel. Appreciate your effort.
Thanks!!!!!!!!!!!!!
Ludic Science hahahaha
Double power by using electromagnet on both sides of the permanent magnet, triple power by using pulse reversal with two mosfets !!!