Isn’t it ironic, that after my soliloque on the virtue of AC motors – what do we see?
A bushed DC motor! AKA Universal Motor that contains a brushed-commutator-ring which connects stator windings to windings in the rotor via brushes. In other words: no permanent magnets and the rotor coil is switched by the commutator allowing the motor to operate with AC or DC power.
Next Pic: Top of the motor, commutator and brushes in AC-powered action connected to digital multimeter.
As you can see, the multimeter is ~16V below 124V line voltage caused by the stator windings.
Regarding the 12V inverter: Shout out to Sean O’Malley
I adjusted the screw top variable resistor and used the digital multimeter to monitor the AC output. Voltage decreasaed from 120 as the frequency increased from 60. The particular multimeter maxing out at 100hz and 98V. I was also able to measure voltage on the AC side of the transformer at 245V, but the frequency would not show on my device. I’m looking for an oscilloscope. Meanwhile, I’ve decided to offer the digital multimeter as pictured for sale. It comes with alligator clips.
Thank you for your consideration, and have a nice day.