Pyrofer wrote:(...)and remove the blue round thing.(...)
Use a little caution with that 'jump'. While the HV sections tend to be very similar (depending on which switching controller happens to be incorporated) the low-voltage sections (which we don't expect to become involved during a 120VAC to 240VAC re-work) undergo more design changes than one might expect! E.g.: Member red_sword_fish discovered a small diode in the LV section (of certain PSU models) died after the conversion, and normal use began. If you see a diode labeled "D11" on your board, you might want to review RSF's postings about PSU re-work.Mibars wrote:...It's good to hear that design is similar to 1,25A model.
Yes. The PSU falls out of its assigned 22Vdc regulation point and droops in accordance with load current. I can show you a rough plot of that function, if you want to see it.One more question: Gordon wrote that Roomba depends on current supplied by charger - Does it mean that it decreases charging current when it notices voltage drop?
Of course it depends on the battery's relative capacity (i.e., how empty is it, relative to its rated capacity?). Lets say you had left a battery in the robot but failed to keep its powered charging PSU connected, and that you eventually found the battery showed only about ten volts across its terminals (w/o any load on the battery).What's the charging voltage then?
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