| Electronics > Beginners |
| Heavy duty AC to DC converter required |
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| mche1997:
Yes, I tried adding a voltage regulator to lower it but it just trips the breaker straight away. Hard wiring from bridge rectifier to generator works fine, had it running for 40 min several times and its quite cool max at 50 oC, no steam just hydrogen and it even set my carbon monoxide sensor upstairs off. |
| mche1997:
Hi Its a DIY 110 cell plates in series, each plate slightly over 2 volts, produces browns gas. If I reduce the plates, it'll heat up really bad. At the moment its all set-up correctly, running at 6 amps, does not go over 60oC but I need a converter as using a bridge rectifier, adding a voltage regulator would constantly trip the breaker and was told the easiest and cheapest solution is an AC to DC converter. |
| oldway:
Ok, it is far more clear now. Of course, it is a lot of power and you can't solve your problem very cheap. It is necessary to choose an isolated output....Even so, 300V is a dangerous voltage, I hope you know what you are doing and that you are aware of the dangers of electricity. First, look for an used isolation transformer 240/240 V of 3 or 4 KVA's....As you use it only 40 minutes, it's enough as power ratings. Look also for an used transformer 240/48V 800VA. Connect the secondaries of the two transformers in serie so you add the voltages , and a 40A bridge rectifier. No need of condensators. The primary of the 240/240V transformer is directly cnnected to the main's voltage (240V) The primary of the 240/48V transformer should be controlled by a variac 1KVA 0-240V. Don't forget to protect the primaries of the transformers by fuses. Do not use a not isolated power supply, it is far too dangerous..... :-- NB: if current is not enough, you could add another transformer 240/48V 800VA in serie, with primary directly connected to the mains. NB2: if you use forced cooling of the transormers (not true for the variac), you can use tranformers of lower power ratings down to max 1/2 the specified power ratings. NB3: all this at your own risks..... |
| oldway:
Industrial applications of Brown's gas : A lot of informations here: http://www.spirig.com/index.php?id=53?&L=0 |
| mche1997:
Hi oldway How about you making them and i'll buy them off you ? I'll be needing them in quantities but not huge and regular as I'm not that clued up, just know some basics. Thanks for your much help. |
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