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I thought the means of accomplishing the voltage drop would be well known since almost all mobile phones use car cig lighters for "in vehicle charging".
6.55V is the measured no load output voltage.
So what phone battery needs 6.55V to charge @ 2 amps?
Surely Li-iron would require 3.6 or 7.2V...
I found an unused older style Samsung mobile phone battery charger, the type that is connected to vehicle 12 VDC cig lighter.
I was interested to see if I could use it in a project so I checked & found:
1) Output voltage (no load) is 6.55 VDC.
2) The unit carries a 2 amp, vehicle style plug in...
Frank84,
Sounds like quite a good idea to me, but I'm afraid my know how is too elementary for me to be able to help.
There are several well tried low cost optional solutions of course but I'm sure you are aware of these.
Maybe if you explain why you want to pursue this approach help might be a...
During the course of re-wiring a domestic Chinese 3 speed fan with remote control - the damned thing has stopped working as far as I can tell due to the controller IC having failed.
I began to realise as I planned to convert to manual operation, that I have not ever properly addressed 240VAC...
My question is late I know, subject quite well covered.
What surprised me was the apparent collective wisdom that a relay solution was probably the best.
Bearing in mind the application & likelihood that the poster would probably prefer to accomodate his circuit mods within the body of the fan...
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