The title says it all. This is an interesting unit, because 115VAC
Mustie1 running a chop saw on a router controller: https://youtu.be/NcM4DxPE1qk
Randy Richards' Dovetail Cutter project: https://youtu.be/Qzo8NXEZdPw
Long Term Projects Here: http://www.Patreon.com/AvE

By AvvE

11 thoughts on “Boltr: inverter vfds explained, teardown and test”
  1. Avataaar/Circle Created with python_avatars Jeff Arp says:

    Those gator sockets are not only good for clevises they work pretty good on smaller wing nuts also. Just sayin.

  2. Avataaar/Circle Created with python_avatars phil merrifield says:

    Capacitors: the lithium carbonate meds for angry pixies 🧚‍♂️

  3. Avataaar/Circle Created with python_avatars Jim Wilson says:

    Does your Megahertz your Decibals?

  4. Avataaar/Circle Created with python_avatars Mitch b says:

    This content has helped me understand how wind turbine VFD converter cabinets work and help me troubleshoot them.

  5. Avataaar/Circle Created with python_avatars Clark Kent says:

    Talking about the confusion wow I'm sure it's a f**** confused I know a lot about electronics but you lost me have a good day bum f***

  6. Avataaar/Circle Created with python_avatars David Lang says:

    I didn't know I needed this until now. So happy I subscribed. 👍 my greasy rag & clothes warsher has one to these built in for soft start/stop. Very cool.

  7. Avataaar/Circle Created with python_avatars Purity Vendetta says:

    I lerv these things. I use mostly those Mitzoboochi brand ones. Just when you think you have a gamble on them you realise there's another 200 pages of interesting stuff to use them for in the manual 🤪

  8. Avataaar/Circle Created with python_avatars VR VA says:

    Flea bay. lol

  9. Avataaar/Circle Created with python_avatars HCS Elevator & Lift Services says:

    What was the name of tha VFD blog you'd mentioned in one of you VFD vids???

  10. Avataaar/Circle Created with python_avatars Brooks D says:

    I find myself completely lost and mesmerized at the same time watching these vijaoes.

  11. Avataaar/Circle Created with python_avatars Pellervo Kaskinen says:

    The attempt to "make the pixies run easier" by adding some solder on top of the copper trace is nearly futile. The eutectic tin/lead solder resistance is about 5 times the copper resistance. So, if you add same thickness of solder as the copper is, you reduce the trace resistance approximately 20%. Given that the surface tension rounds the solder profile, you probably don't get much more than the 20% effect. If you really need to reduce the resistance, you better imbed some bare copper wire (or sometimes braid) into the solder.
    As to the graph on the manual, it presents the rectified waveform as it is on a single phase input and right after the rectifier. 3-phase has a DC level near the peak of the AC. The ripple of the shown 3-phase bridge is nominally 4.5% (RMS) of the DC and 13% peak to peak. And what the LC smoothing tends to do is a tremendous overshoot of the capacitor voltage. Without some slow-down, the kick gets to about double the steady state value. The initial wait you noticed almost certainly is due to an intentional inrush current limiter at the input.

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