therink wrote:
Someone posted about low voltage increasing current causing more heat in connections, Though he is correct,, He has no understanding of ELECTRONICS.
I never said I did.
Where as I have wall paper that says I do somewhere (Sealed in an envelope in the documents safe here in the motor home).
Actually, if the O/P had been talking about a major power sucker like a heater or a vacuum cleaner.. You would be 100% correct. but for a cell phone charger which is drawing on the order of 0.10-0.25 amp. No, the current draw is just not big enough. It just won't draw enough.
Now power supplies come in several types (The cell phone charger is what I call a Power Supply)
1: Unregulated.. These will not get much warmer as voltage changes
2: Series regulated, MORE voltage WILL make them run hotter
3: SHUNT regulated (reare) Same
4: Switching... Anythign is possible with a Switching supply, But generally they shrug off most voltage changes. (Within their ratings)
5 Divider.. These are very wasteful of power and should get hotter as the voltage rises.
I have designed and built two of three of these designs. (The first 3)
