Yes, you can charge electronics and machines using VK. VK users are using VK to improve the functioning of their electronics and machines, like to re-start a hung smartphone or a refrigerator or washing machine, improve battery life of electronics, reduce electric bills, etc.
Please do not use VK to charge a fused bulb. VK will not help here. Just replace the bulb with a new one.
In some cases like completely broken stuff, there may need to see a mechanic as well. VK cannot mend the broken or damaged thing but it can fetch you other important requirements. For example, if your mobile is broken and cannot be amended, VK can fetch you the best mechanic, a fair deal, a good discount, etc.