Is it possible to make an AC to AC converter which will give 100V when supplied with 3.5V?

Question

I want to know whether it is possible to make an AC to AC converter which will boost the voltage to 150V when it is supplied with 3.5V but there is a restriciton in terms of weight, where the maximum mass should be about 3g. Is it possible to make something like this?
Do you know of any companies which I can contact about this device?

Answer 1

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AC to AC would be a transformer, Yes the windings in primary and secondary could be designed to give that sort of volt change, but very little current ... Where do you get 3.5V AC from ?

Answer 2

An example for your application is a camera flash where two AA size cells (1.5 x 2 = 3 Volts) drive an inverter to make around 400 Volts which is then rectified and stored in a capacitor. This is DC to DC converter.

In your case, since AC to AC conversion is required, please give details of input frequency given to the converter and the AC current and frequency required at the output of the converter.

The lower your current and higher your output frequency requirement, the less will be the volume and weight, but I think 3gms is a bit too far fetched for this kind of application.

Answer 3

Agree that 3.5V sound's like it would be a DC voltage. Are you refering to the output from a chopper?

http://en.wikipedia.org/wiki/Chopper_(el…

A 3g maximum mass is VERY limiting, But you might just be able to get away with that if you use air core transformers/inductors (iron/ferrite cores are heavy!). But the efficiencies are usually quite low with air cores, and the output AC would need to be of very high frequency.

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For DC-DC converter pehaps use a high frequency chopper circut, and basic info about air coils here
http://en.wikipedia.org/wiki/Transformer…

As you're wanting DC output then you'll have to rectify the output using a diode, and a smoothing capacitor. High frequency perhaps means half wave rectification will be ok, and only needs a single diode (keeping mass down)
http://en.wikipedia.org/wiki/Rectifier#H…

You'll probably have to buy a diode (of at LEAST 300V reverse blocking cap, but something like a leydon jar (http://en.wikipedia.org/wiki/Leyden_jar) would perhaps surfice as a fairly decent/light weight capacitor. I recon a fairly light one could probably be made by using a small plastic bottle/container, with a very thin layer of silver deposited on the inside/outside using the Tollens Reaction/Silver mirror test. But be carefull as like all caps, leyden jar caps can store/deliver lethal votlages/currents, and they can sometimes charge on their own while in "storage"

http://www.uni-regensburg.de/Fakultaeten…

Answer 4

3.5 Volts sounds like DC not AC voltage.....if it is really AC then you need a step up transformer

Source(s):

http://www.allaboutcircuits.com/vol_2/ch…

Answer 5

You would need quite an 3.5V amperage to do that and get a useful current out of it, and a good size transformer: 3g no chance.

Answer 6

Yes It is possible.Visit:www. ciruitstoday.com. www.eduypedia..com.

Answer 7

Don't understand where you are going to get supply of 3.5vac from. Certainly, not from mains supply.

Answer 8

3 grams? less than a penny weight damn.. How many milliamp are you talking about?