Recent content by redwan hasan

Good afternoon. I was going to make a 4.2v Lithium ion charger circuit, but so far what i have learned is, i will be needing constant current charger, so my question is what will happen if i charge with constant voltage? Like from a regulator maybe a linear one and i give like 4/4.1 volt...

first of all that's how it is made. besides voltage and current, there are other factors working here. If the primary side of the transformer is connected to such a source that can push 5A on 50V terminal that means u can construct transformer that can provide upto 250W on...

i do know that reactive losses do not contribute to power dissipation but what do u mean by the excess current flow? what i know is current flow through the resistor will depend on the voltage across the resistor.

i'm trying. :S i will concentrate more on this after figuring out some stupid topic of quantum physx and signals.

i guess it will still be larger. transmission lines will loose due to skin effect, capacitive loss, inductive loss and all the reactive should be greater than the resistive loss.

that should matter, you can check datasheet of any product to find out its max ratings.

are you sure? cause what i think is in transmission line Xs is larger than Rs because Rs depends only on the length, material and temperature but there are a lot of magnetic loss like loss due to skin effect and capacitance,impedance etc. ok i guess. i will keep digging though. It helped thanks!

i think voltage regulator is way better than voltage divider. although linear regulators burn a lot of energy.

as far as i know you can use any type of capacitor you want. the value might be different though. and you can also use small transformer to do this. first use a switching circuit consisting of transistor and caps to make it AC then feed it into a transformer of proper number of turns. the...

thank u too. never thought in this way. so generators and transformers both are inductive in nature that's why with capacitive load their voltage goes higher? can u explain e little more? it would be really helpful!

1st of all thanks for your input. I also thought of the BOLD part but is that all? so the main reason is the Rs is much much lower than Xs that's why the resistive loss is much lower than inductive loss? well during experiment it was seen that with transformer and alternator, if we...

yes they still do. what changes is they are no longer linear. they use SMPS now a days just like a PC power supply but still transformer is being used.

even if nothing is being charged, the transformer will still act as a load. it will burn a small amount of energy which is considered to be loss of the transformer.

Good evening everyone. I have two questions to ask you guys. 1. Why voltage regulation of a synchronous motor is negative with a purely capacitive load? I mean why? 2. Why Reactive loss is higher than resistive loss in a power distribution line? thank you and have a nice day...