Console TV or stereo kill switch

[jeyurkon]

Originally Posted by wa2ise

Most of these microswitches have a fair amount of mechanical hysteresis (once a door so equipped by such a switch is opened a fair amount to make the switch turn on, you need to close the door further shut to get the switch to turn off. Idea being that if the door is held at the point when the switch turned on, a small amount of random door movement won't make the switch toggle on and off quickly).



Light bulbs are also tough on switches. A cold light bulb has very low resistance, which makes for high inrush current when switched on.

I was thinking that the transformer would look partially like an inductive load and when the field collapses it would arc across the switch when it was opened slowly like it does in a simple switch.

The power factor of transformer sets is surprisingly good though.