Need small 800 volt battery

Reply to Thread

Have a need for a very small (relative) battery generating 800 volts
DC. Anyone have any ideas? I'm not an electronics guy.

 

perhaps those small disc cells (mercury or lithium) put in series? Don't know
how small you mean by "small".

 

Hopefully you get them at a bucked deal, to produce 800 [eight hundred ]
volts from a battery pack you will need a lot of batteries. Probably want to
invest in a small fork lift or good size hand cart also.

 

You can construct one from approx. 534 2016 button cells in series. Singly
stacked, it would be about 2'9" high; stacked in 4 columns, soldered in series
would be an approximate 3"x3"x8" cube -- not too bad for 800v. Smaller button
cells could get the size down further, if needed.

What are your size requirements?

 

******
HI' I am YAR
how many ampers you will used?
generaly you can get this(800 volts ) with 12volt with any circuityou
can convert the DC to AC volt & then use a transformer to nearly
200volt then used two voltage doubler to get the 800volt you want
If you agree send me an email and I will email you the circuits
don't search for this batteries

 

We're looking to minimize the noise from electronics by going as close
as we can to a pure DC power supply. Therefore, an 800 volt small....d
cell size... battery will work really well.

kime

 

You are better off using a standard battery, say 12V, and then a
converter to generate the 800V.

How much current would the 800V load require?
And what size battery - how small?

 

How can you convert voltages in DC power? You need AC power for a transformer.

 

It is called a DC-DC converter.
Crudely speaking, the input DC powers an oscillator which drives a
transformer to create the new voltage; the output is rectified and
filtered to give DC.
That oscillator can be a push-pull square wave, or can be a
(single-ended) flyback or similar design.

 

wow ... never knew you could turn DC into AC. That would be conveinent in a
power outage, we could turn batteries into AC power.

 

I have seen such inverters for sale in Costco, Wall Mart, computer
stores, electronic parts catalogs, etc.
They have been commercially available for over 10 years.

 

It is called an inverter. You can get them for your car, rv, boat, or other
similar personal conveyance, where they plug into your cigarette lighter or
similar power-point and have 1 or more 120 VAC sockets.

Same thing with computer power backup systems (or uninteruptible power supply
-- UPS).

They are used on a larger scale for emergency power systems where a temporary
outage cannot be tolerated -- there will be some large-scale UPS, typically
powered by submarine batteries that immediately kicks in on a power brownout or
failure and keeps the system energized until the fuel-powered generator comes
online.

 

Check some of the antique electronics groups and see if somebody
still makes 200v or 300v batteries. They were available a long
time ago.

 

About 90 or so 9V PP1 batteries in series will do the trick. No wiring
required either, just clip them together directly "end to end". Not
exactly a robust or elegant solution though, although I suppose you
could glue them together to make it more robust.
How much current do you need?
Don't use a DC-DC converter if you want low noise.

Dave

 

Lol ... when I was an 8th grader I put a pack of 12 9-volt batteries in series
using the clips and touched the end terminals ... ouch!

 

Darwins theory of evolution occasionally fails! :->
Perhaps the OP will win next years Darwin Award?

Dave

 

Build a simple voltage multiplier ckt. It should do the job for small current drain.