Can I use the 'fake battery' method?
Quote from: udo on 19 / February / 2017, 02:50:42Can I use the 'fake battery' method?Yes. Only two contacts needed.Quote10 ohmstoo much...
If we keep the low pass filter @ 4 Khz then we could use 4 uF and 1 ohm resistor.
Quote from: udo on 19 / February / 2017, 04:36:29If we keep the low pass filter @ 4 Khz then we could use 4 uF and 1 ohm resistor.I am not sure you need it. There are at least two switching regulators/converters inside the camera. One on main PCB and one on sensor PCB. IMHO it's enough to place 1000+ uF capacitor closer to the battery connector.Do you think ACK-E17 contain special filters? IMHO it's overpriced switching power supply.
Would really interest me if that would work. I'm thinking about the same problem ...1) the first problem with Powerbanks is that they turn off at> 2A immediately. My G1x needs at power up approx. 2A at 7.4V (when the lens runs out). This means that at least 3A is required at 5V. Ok, with the M's there is no lens turning out ...
2) rawopint logged the voltage. Comparing the curves made with the battery with those that were made with power supply, you can already see strong ripples. Whether the ultimately effects on the pictures, I always wanted to investigate.
I wanted to operate my Flashes Metzt CT45 with a Powerbank. That cost me a lot of sweat. There are 3 switching regulators in series:
I think about other solutions:- Transfer the 3.7V from the batterie of the Powerbank directly to 7.4V- from 2 Powerbanks the 2 * 3.7V in series without switch to come to 7.4V
How can we find out?
What would be good tests? Pictures in black? High shutter speeds?
So decent filtering is something we would want
What would be practical current limits for the four Li-Ion cells used in the powerbank?
Quote from: udo on 19 / February / 2017, 11:20:34How can we find out? Measuring with the fake batterie…
Our AC-adapter PS700 has an output of 7.4V (2.0A)So we could get way with the MT3608 module as it could deliver 2A's for us at that voltage. (I did see some videos of smoking MT3608 modules, though)
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