title says it all.. The device works with that power supply (adapter), but will it make any damage to the device or even worse (blow out or something like that)?
thanks
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2Based on the available information there's no way to say for sure. – Dampmaskin Jul 31 '18 at 11:29
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"The device works with that power supply" Most people would ask first and try later. – Oldfart Jul 31 '18 at 11:30
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What is the device? – Steve G Jul 31 '18 at 11:32
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@Dampmaskin what other information do you need to tell me more? – Tomáš Vítů Jul 31 '18 at 11:33
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@SteveG it is a small label printer – Tomáš Vítů Jul 31 '18 at 11:33
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@Oldfart I just tried it turn it on and off for couple of seconds – Tomáš Vítů Jul 31 '18 at 11:34
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It could work depending on how much current your device draws.. If it draws more than 2.5A, which is your specified limit, then the power supply power may take over and blow up your device. – 12Lappie Jul 31 '18 at 11:34
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@12Lappie there is a label on the device that says 20V and 2,5A.. – Tomáš Vítů Jul 31 '18 at 11:36
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input power 12Vx3.35A = 40.2W and the output power 20Vx2.5A=50W As toy can see you can't get 2.5A at 20V but you can get around 40W/20V =2A (less than that). But you need a step-up (boost) converter. – G36 Jul 31 '18 at 11:37
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Try to Google "DC-DC Step-up Boost Converter module" – G36 Jul 31 '18 at 11:42
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Did you successfully print a label using that power supply? If not, then saying "the device works" is probably an overstatement. – Dave Tweed Jul 31 '18 at 12:03
1 Answers
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A 12 volt power supply capable of providing 3.35 amps can deliver a power of 40.2 watts (assumed continuously). A load that takes 2.5 amps from a 20 volt supply requires a power of 50 watts.
Therefore a 40.2 watt power supply will never be able to continuously deliver the power required by a device that wants to consume 50 watts.
The device works with that power supply (adapter)
Then it isn't consuming 50 watts when you determined it worked.
but will it make any damage to the device or even worse (blow out or something like that)?
It all depends on the circuitry details for power supply and device.
Andy aka
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