I have a battery powered (24V) vacuum cleaner. Now I'm kinda sick of replacing the batteries that no longer properly recharge, so I thought about replacing the battery pack with a "real" power supply.
I have an old laptop power supply that outputs 19V, 4A (Toshiba PA-1750-09) and fits perfectly inside the handle of the cleaner - very much in contrast to all other PSUs I found online for a somewhat affordable price that could output 24V and 2A (which is the current the vacuum needs when running off the battery).
Now the strange thing: When I first tried if 19V is even enough, it worked perfectly fine, but now I tested it again several times and most of the time it does not work and the motor just spins up for a fraction of a sedond and then repeats this pattern. But then again I had it working for whatever reason again one time.
Any idea what could cause this? Maybe the motor control on the vacuum does not like the "DC" frequency from the switched-mode power supply?
Do you have any suggestions?
I have an old laptop power supply that outputs 19V, 4A (Toshiba PA-1750-09) and fits perfectly inside the handle of the cleaner - very much in contrast to all other PSUs I found online for a somewhat affordable price that could output 24V and 2A (which is the current the vacuum needs when running off the battery).
Now the strange thing: When I first tried if 19V is even enough, it worked perfectly fine, but now I tested it again several times and most of the time it does not work and the motor just spins up for a fraction of a sedond and then repeats this pattern. But then again I had it working for whatever reason again one time.
Any idea what could cause this? Maybe the motor control on the vacuum does not like the "DC" frequency from the switched-mode power supply?
Do you have any suggestions?
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