Electronics > Beginners
Heavy duty AC to DC converter required
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oldway:

--- Quote from: mche1997 on April 25, 2018, 09:58:57 am ---Yes Oldway
I just need on looking then, I'm going to try using the Metal Halide Ballast to lower the current draw from generator,maybe add a few to it connecting in series or parallel and use switches to turn on/off individually so I can increase or lower the current.

--- End quote ---
I am sure you are working without isolation transformer using directly the rectified mains voltage....This is very dangerous, water and electricity does not combine....

You risk to kill yourself...

As a beginner, you should not make experiments with voltages higher than 50V.

Why a such huge quantity of Brown's gas ?

A DIY electrolyser hardly reach an efficiency of 50%....It is a huge loss of energy.
mche1997:
The purpose for this size is to produce a minimum of 6 litres of gas per minute and some applications up to 10 litres per minute, this is needed to clean the internal carbon from an engine and also the voltage from each plate cannot exceed 2.5 volts or lower than 2.0 volts. Higher, it will heat up the generator within 10-15 minutes of operationand if it's lower, not enough gas production.
oldway:
It is therefore a professional application.

Can we consider a three-phase 240 or 415V main's power supply instead of a 240V single-phase ?

In fact, the power involved is high and more compatible with a three-phase power supply than with a single-phase power supply.

The three-phase rectified voltage is almost continuous with very little ripple and no power factor problem. On the other hand, it is easier to find 3.5KVA transformers or more in three-phase than in single-phase.

Using a three-phase transformer with primary 240V delta and 415V star and secondary 240V delta, one can get 322Vdc.

Just add an adjustable chopper 15A to reduce this voltage to the desired value, without influencing the power factor.
mche1997:
3 phase won't be much of a problem by changing a few components but finding a 3 phase outlet is a problem as mostly this will be used at domestic locations and everyone only have  single phase outlet apart from commercial properties.
Thanks for your suggestions Oldway.
oldway:
https://www.bmisurplus.com/products/10484-sorensen-dcr-300-9b-power-supply-0-300v-0-9a
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