Dummy - load - Page 3

skaara · 30th August 2002, 07:49 PM

-you cannot know the resistance of this water/salt mixture
-you can have some problems if youre testing for a longer period, because Cl is coming out and Na transforms to NaOH which is dangerous too, if youre a smoker you can blow your room out because of H coming from reaction too..
(if you wanna know the reaction formula:
2H2O + 2NaCl + Energy (from ur amp) --> H2 + 2NaOH +Cl2)

jleaman · 30th August 2002, 08:06 PM

i was going to say the same thing i think ill stick tomy oil one and my resister one.. ..

J'

lumanauw · 20th February 2007, 11:24 AM

Is it possible to make dummy load with car halogen lamp?

1 lamp at 12V can dissipate 150W, means the R is about 1ohm.

Can I make 4ohm load with 4 of this 150W halogen lamp in series?

TroelsM · 20th February 2007, 12:06 PM

Hi.

I made this box from scrap. The following resistances are available:

2 * 7.33 Ohm /150W

2* 7.6 Ohm /100W

1* 7 Ohm /250W

Cooling is done with a fan. I don't think it could remove the worst-case-heat, but for shorter periods its fine.

Regards TroelsM

fotios · 23rd February 2007, 01:04 PM

This is my own made double dummy load. In a simple package there are two dummies made from nickel-chromium edge wound wire each of 8Ù / 20°C or 8,16Ù / 100°C. And each of power about 2,5KW.

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30th August 2002, 07:49 PM	#21
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	-you cannot know the resistance of this water/salt mixture -you can have some problems if youre testing for a longer period, because Cl is coming out and Na transforms to NaOH which is dangerous too, if youre a smoker you can blow your room out because of H coming from reaction too.. (if you wanna know the reaction formula: 2H2O + 2NaCl + Energy (from ur amp) --> H2 + 2NaOH +Cl2)

30th August 2002, 08:06 PM	#22
jleaman Banned Join Date: Apr 2002	i was going to say the same thing i think ill stick tomy oil one and my resister one.. .. J'

20th February 2007, 11:24 AM	#23
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Is it possible to make dummy load with car halogen lamp? 1 lamp at 12V can dissipate 150W, means the R is about 1ohm. Can I make 4ohm load with 4 of this 150W halogen lamp in series?

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