DIY

# Attempting to transfer a cordless screwdriver to a wire

Hello dear readers. Today I will talk about trying to convert a cordless screwdriver to a wire.

This idea came to me after I discovered a 12V screwdriver without a battery.
At first I came up with a brilliant idea (which in the end failed): take a battery charger and connect it directly.
I found wires to connect
length
Tinned with a soldering iron, tin and soldering acid

Next, I determined where the plus and minus are on the screwdriver
After soldering the wire, observing polarity
And here is the moment of truth!
If you look closely at the photo of the charger, which is presented above, you will notice a very important detail, according to which we can conclude that the screwdriver will not work. The whole “snag” lies in the voltage of the charger. The charger gives out 18V, while the screwdriver I have is 12V. But it's okay, I have a “shura” 18V.
By the way, the charger was from this very instrument.
Determining the polarity again
< img class = "aligncenter" alt = "An attempt to transfer the cordless screwdriver to the wire" src = "https://usamodelkina.ru/uploads/posts/2021-08/1627985941_foto-17.jpg"/> Solder
Everything looked like this
And again not luck. The screwdriver does not work. This time, I was unable to explain what the problem was. There were suggestions that the charger has protection so that there is no short circuit.
I decided to follow through with this idea, so I got into my “bins”. Having found a power supply unit there that produces 22V, I decided to give it a try.
Unsolder the wire from the charger and solder to the power supply wire
Insulate with electrical tape
And oh miracle!
The poor screwdriver has worked. But the main problem appeared – this was the current that the power supply was giving out. It was only 450mA. This was not even enough to tighten a small, thin self-tapping screw. From this we can conclude that the voltage of 22V is quite enough, but the current must be at least 2A. The question/topic is automatically published in social media. site network – follow the answers there too:

Source:

usamodelkina.ru