Quote from: waterwingz on 05 / December / 2014, 23:24:53Your SX150 was designed to run from two AA batteries. Which means that the most voltage it is expecting is 3.0 V.Canon compacts that run from 2 AA batteries usually have the ACK800 AC adapter as optional accessory. Its rated output voltage is 3.15V, maximum output current is 2A.
Your SX150 was designed to run from two AA batteries. Which means that the most voltage it is expecting is 3.0 V.
If the voltage drop CharlieMAC is experiencing is not due to the power supply, it might be caused by too thin or too long wires. Other cause might be that ATX power supplies need a minimum load on their outputs (+5V, +12V). If the only load is the camera, the regulation won't be optimal and the output voltages won't be within specs.
The ACK800 plugs into those cameras via a seperate jack - it doesn't use the "dummy battery" method. As such, the camera may be designed to accept / expect a higher voltage at its power plug? (And thereby lowering the required current at the same time). CharlieMAC mentioned using a dummy battery setup, so his camera would not be seeing more than 3V normally and usually quite a bit lower.
Power Source (...) Compact Power Adapter CA-PS800 (included with AC Adapter Kit ACK800) • However, the separately sold DC coupler, DR-DC10 is necessary.
Actually, yesterday I tested the camera with an old ATX power supply supposedly capable of driving 15A on the 3.3V output, but in the real thing, it couldn't even drive the enough current to power the camera up, not even in playback mode.
Quote from: CharlieMAC on 06 / December / 2014, 14:50:28Actually, yesterday I tested the camera with an old ATX power supply supposedly capable of driving 15A on the 3.3V output, but in the real thing, it couldn't even drive the enough current to power the camera up, not even in playback mode. Did you short the necessary pins so that the ATX supply turned on?http://www.techpowerup.com/articles/other/22http://www.electronics-tutorials.ws/blog/convert-atx-psu-to-bench-supply.html
Anyone ever try 5v? The lithium bats can put out up to 4.2... so 5v isn't far off.
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