Manufacture torch hydrogen or Brown's Gas

[Capt_Maloche]

I'm taker and you would not also have rectifier bridges?

[Bibiphoque]

Hello,
I have to have that somewhere, I'll watch tonight and tell you what tomorrow.
(Don't you need big filtering condos?)
@+

[Capt_Maloche]

Thank you , for the condos, will smoothing the sinusoid increase my yield?

I understand that it takes around 1000micro Farad per Ampere, which would make around 10 000 Micro Farad !! do you have that?

[Bibiphoque]

Hello,
Well, vi, I don't throw anything away! (except my non recyclable garbage!)

Okay, well, IGBTs are SKM150GB 123D, 150A 1200V double transistor modules, integrated diode protection.
I have 3 pc available. (enough to make a three-phase motor drive bridge 150A)
Date:
http://docs-europe.electrocomponents.co ... 0279c0.pdf

The rectifier bridge is a SKD160 / 12 160A 1200V , it is a three-phase, but nothing prevents it from being used on two phases only.

The condos, it seems to me (to be checked) that these are 2200 µf 600 VDC, I must have a dozen lying around my house, I'm watching tonight and telling you what tomorrow.

In fact, I kept all that to make a DC / AC converter but I never had the time to finalize (equivalent to an inverter) nor the opportunity ...

Voilivoilou
@+

[Capt_Maloche]

that sounds good to me!

what corner are you in already? will have to play post

[Bibiphoque]

Hello,
Yep! no doubt, I'm in Brussels.
@+

[coucou789456]

Good evening

little reminder, however you had started well.
220 V efficient will give 311 V peak / peak, not 622 V

once rectified double alternation, you will only have
311 V / 2 -> 155,5 V (no load)

the best way to limit the current is to move the plates away from each other. if you limit the current to 10 A, you will therefore have 1555 W to dissipate. do not forget either that the major part of the power will be dissipated indeed joule, that is to say great heat to evacuate.

putting a fuse is a solution but you may see it blowing often if you fumble too much to adjust the max current.

a solution that is both efficient and archaic is to put in series in your assembly, for example, 3 lamps of 500 W in parallel (halogen living room projector lamps). in the worst case, if there is a short circuit between all the plates, the lamps will light up. otherwise, they will remain off.

last point, put capacitors to filter, I do not know if there will be more gas production, on the other hand you will have an inrush current when you connect your fixture to the mains outlet. your diode bridge may suffer as the current will be much higher than 10 A, not for a long time but enough to burn it out.

your assembly connected directly to the mains is very risky, because of the risk of electric shock. if possible, stay isolated from the ground with rubber soles. use gloves otherwise.
jeff

ps: by convention, when it comes to amps, we say intensity ou running. when it comes to volts, we say tension.
we say intensity when we speak for example of car batteries
avoid saying amperage or voltage, which will avoid confusion.

[Bibiphoque]

Good evening
...
last point, put capacitors to filter, I do not know if there will be more gas production, on the other hand you will have an inrush current when you connect your fixture to the mains outlet. your diode bridge risks to suffer because the current will be much higher than 10 A, not for a long time but enough to make it burn out ....

Hello,
No big risk: "Well, there you have it, the IGBTs are SKM150GB 123D, 150A 1200V double transistor modules, integrated diode protection. The rectifier bridge is a SKD160 / 12 160A 1200V , it is a three-phase, but nothing prevents it from being used on two phases only. "

Remarks, for the rectified, your calculation does not seem exact to me, the double alternation rectification gives voltage VAC X 1.4142 (radical 2), if I am not mistaken ... therefore 230VAC X 1.4142
@+

[Capt_Maloche]

Yep!

I would have in principle + 220V redeployed without condo at the beginning (311 / root 2), or rather the 240V in fact

For protection I already have a circuit breaker + 30mA differential that should prevent me to stay stuck (you never know if)

I am not sure on the other hand that your proposal to place a resistor in series is ideal (for your example of the lamps) and on the other hand, at 2.2V per cell, I should not have so much joule effect as that;

at these voltages the chemical yield should be of the order of 60%, and the more the T ° increases, the more the yield increases

I hope to have time this weekend to do my first tests with 2 plates of 250x250mm, photos and videos to follow

[Christophe]

For protection I already have a circuit breaker + 30mA differential that should prevent me to stay stuck (you never know if)

HIihhihi but it won't prevent you from sticking ... to the ceiling in the event of an H2 boom!