@JRE Sorry about the random letter. Phone is slow. I need to reduce the max current flow down to 1 or 0.85 amps. My input voltage is going to be between 2,320 - 5,000 VAC at 2-5 amps. What resistor do I need in line to lower the current? I won't care if the voltage is lowered. I need a resistor to handle the max current. I have a system set up to release current into the ground to energize the ground, but I need a maintained current level so I don't get killed.

@JRE I've thought about getting a slow blow fuse. So that the ground can be energized and if the current is too high the physical properties of the tungsten material would come into play. Therefore blowing the fuse and not allowing current to flow.

I've heard of circuits that control the direction for the flow of current under certain current levels. But I dont see any that work at voltages like this.

I received a box from my brother a while ago. And I'm curious as to what the bulb is and what its used for?

It came in a box like this.

As far as I know its a bulb. And it looks like it doesn't emit visible light. So that makes me like the volt meter more than the bulb. But maybe if I find out what the bulb is I'll like the bulb more.

@ScientistSmithYT For a young person, you show a disturbing inability to search the internet.

There's a datasheet at the link that describes how it is used.

It's a PDF file. Have you managed to install Adobe Reader on your phone?

@JRE I have not had the time to install adobe yet. And its not that I can't search the internet. I just choose not to. As I believe someone else may know about this faster and easier than I do and can tell me the answer. So I wouldn't go as far as to say I show the "inability" to search the internet.

If you'd have just searched, you'd have had the answer in less time than it took you to post the photos and wait for someone to notice.

@JRE That is true and you're right. Next time I'll look it up and see what I find.

@JRE I came across a supposedly AC to DC lithium ion charger circuit. It does output DC and does charge DC batteries. It only has 1 diode, a timer, 3 104 caps, 3 maybe 2.3 K ohm resistors, 1 13001 SBD transistor, 47 uF and 10 uF caps. With a transformer at the start. It has 3 schottky dides. 1 N4007 diode in parallel with 1 Schottky diode. The other 2 schottky diodes are in parallel on the other side.

@JRE My question is. Do schottky diodes act the same as regular diodes do? I've read about them, but it doesn't make it clear as to if they act exactly how other diodes do. This is why I have the question.

From what I've read it seems they act the same but from what I've read they don't make it clear.

@JRE I found the answer. It a lot clearer now. They both act the same with the same principals. But the Schottky diodes are more sensitive and react a little differently. Which makes it so they can be used like this. I see. It does create real DC. So its a real AC-DC charger.