All Questions
23
questions
0
votes
1
answer
77
views
Can a loosely connected PSU damage a laptop?
is it a bad thing that the cable connects to the power adapter block in a laptop power supply comes loose and is left alone while the laptop is under use (as shown in the picture)? I am worried it ...
- 21
12
votes
3
answers
31k
views
How can I detect the USB-C power delivery voltage?
I have an HP laptop which I charge with a USB-C charger through the USB-C port. I have no idea which power delivery (PD) version it has and if it's PD-compliant at all. However, as the charging works, ...
- 1,345
0
votes
1
answer
541
views
Can I use a smart socket with an input voltage of AC 120V and plug it into a 220V outlet?
Using a Smart Socket
Model SP10
Made by Teckin
It's meant for use in the USA with 120V power outlets but it is being used in the Phillipines with 220V power outlets.
0
votes
1
answer
157
views
How to replace my power supply safely?
If something is powered from a 9 V and 1 A supply, you can replace it with a 9 V and 1 or more amp supply. How would one calculate if it is safe to replace it with a less voltage and less amperage ...
- 101
0
votes
2
answers
5k
views
can i power a device with more output amperage than the device needs? [closed]
I just brought a speaker that runs on 12v power supply. So i want use it on my car.
Can i power a speaker with a car battery 12v directly?
Speaker input: 12V, 1.25A
Car battery output: 12V
1
vote
2
answers
5k
views
Can I use different laptop charger- similar Voltage, higher Ampere? [duplicate]
My original laptop charger was output 20V 3.25A.
Now I have a charger with output 20V 6.75A.
Can I use it?
(The real data: Can I charge Lenovo Yoga 11s with Lenovo IdeaPad 15?)
- 107
1
vote
2
answers
11k
views
Okay to supply more amps? Use a 14V 4A 56W power adapter on a 14V 3.21A (45W) monitor?
I have a Samsung 4K monitor, LU28E510DS/ZA (Costco exclusive variant), with a back panel describing DC14V 3.21A.
I cannot find an exact replacement power supply. I found one that is close at 14V 3A ...
- 936
2
votes
2
answers
53k
views
How do I check the mAh or Voltage for my laptop battery?
I was wondering if there's an easy way I could find out the mAh for my laptop battery, It's a Lenovo Yoga 12 and it states on the manufacturers website that the battery is a Li-Polymer 8-cell 47Wh but ...
- 23
0
votes
3
answers
1k
views
Safe to use a 19V 2.15A DC adapter (a laptop charger) for an accessory that uses a 25V 0.75A DC adapter?
I picked up a USB steering wheel at a thrift store and it requires a power supply to 'nudge' the wheel back into place (if you let go of it, for example). It requires 25 Volts, 0.75A, yet the closest ...
- 103
9
votes
2
answers
5k
views
Under what conditions will a group-regulated PSU damage a modern computer?
These days, group-regulated power supply design is considered obsolete and is ideally avoided—primarily due to the poor regulation under crossload. For example, Shilka pulls no punches here, and while ...
- 3,024
-2
votes
1
answer
708
views
Will an external battery power bank power an mini-ITX board (~200W)?
I was planning to build a laptop from scratch, and I've found some good DC-DC converters that allow you to use an external power source to power a standard desktop board (in this case a mini-ITX). The ...
- 1
1
vote
1
answer
342
views
Does Laptop power supply matter? [duplicate]
I have a power supply which is 19.5V and 6.15A.
My friends power supply or laptop probably broke and his power supply has a 19V and 6.32A.
His charger comes with an adapter which fits my plug ...
- 11
2
votes
1
answer
637
views
wireless router power adapter replacement 0.5a vs 0.6a
i have a wireless router with no power adapter, it needs a 9 volts 0.6 amperes adapter but i only have 9 volts 0.5 amperes power adapter.
Will 9 volts 0.5 amperes power adapter damage my wireless ...
- 23
3
votes
2
answers
6k
views
Can Current Backflow from Powered Hub's Adapter & cause PC Damage?
Getting this short:
Can current flow from a powered USB hub's power adapter (lying 10 Meter away) back to computer via usb port and cause damage to Computer components like mobo, etc?
What should be ...
- 191
0
votes
1
answer
129
views
Are Samsung Series 9 ultrabooks (purchased in the US) compatible with 240V/50Hz power input?
I'm traveling and I'm curious if I can use an adapter. I have a replacement power chord and it states that it can take in 100V-240V, 50-60Hz, but I want to make sure that the ultrabook itself accepts ...
