Re: Instability between a 16A triac 'dimmer' and 3300uF caps
Posted: Thu Feb 16, 2012 4:53 pm
You might try stage lighting places for big variacs. They still use them for controlling big incandescent lamps.
Put a scope across the two hot on your 240, you will see a sine wave. In reference to the neutral center tap they are just opposite polarities. That is single phase. You can try to rename it all you want but it is just wrong.
Two phase is not theoretical, it exists. A couple places in the US still use it to run old machinery from the turn of the last century.
4 wire two phase is no part of 4 phase. Each pair is referenced to only itself, it has no electrical connection to the other pair.
I have a +/- 15v common ground DC power supply, according to your definition that would make it a two phase DC power supply.
Put a scope across the two hot on your 240, you will see a sine wave. In reference to the neutral center tap they are just opposite polarities. That is single phase. You can try to rename it all you want but it is just wrong.
Two phase is not theoretical, it exists. A couple places in the US still use it to run old machinery from the turn of the last century.
4 wire two phase is no part of 4 phase. Each pair is referenced to only itself, it has no electrical connection to the other pair.
I have a +/- 15v common ground DC power supply, according to your definition that would make it a two phase DC power supply.