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Old 8th October 2005, 04:57 PM   #1
Nordic is offline Nordic  South Africa
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Question Hot hot ouch - rectifier

Ok except for the 2 2VAC windings, my transformer also has a 6VAC one... rated at 1A,

I connected a bridge rectifier to the 6V, and connected the rectifier to a small 12VDC PC fan...wich says something about 0.1A on it...

It all runs nice and quiet due to the low voltage, but the rectifier heats up something mad...

ANY ADVICE?
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Old 8th October 2005, 05:34 PM   #2
djQUAN is offline djQUAN  Philippines
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you forgot to mention what bridge you are using.

if that's a 35A one, then something is definitely wrong!
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Old 8th October 2005, 05:52 PM   #3
Nordic is offline Nordic  South Africa
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It says RS405

Looked it up now
4.0 mA single-phase silicon bridge rectifier in 4-pin KBL package. Operational temperature range from -55C to 150C, hmmm so maybe this is too small for a 1A winding...
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Old 8th October 2005, 06:27 PM   #4
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You are using a 4 mA bridge to pull a 100 mA fan
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Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
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Old 8th October 2005, 06:31 PM   #5
Nordic is offline Nordic  South Africa
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hehehe, luckily it was sitting right infront of the fan...

I have some BZT03C10 diodes... lol whatever they are (looks like little white eggs with a black line... and looks tough... (put on flamesuit).

Maybe I can build a rectifier using these (I have 4)

How do I tell the rating? did see it before but can't find it again.
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Old 8th October 2005, 06:40 PM   #6
djQUAN is offline djQUAN  Philippines
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dont.

what you have is "Silicon Z-Diodes and Transient Voltage Suppressors"

according to http://www.datasheetarchive.com
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Old 8th October 2005, 06:44 PM   #7
Nordic is offline Nordic  South Africa
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No man don't say that, now i have to wait till monday again...

Would you care to explain why not...? It seems they can handle some 15V and 20A
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Old 8th October 2005, 06:54 PM   #8
djQUAN is offline djQUAN  Philippines
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let's just say what you have is a 10V zener diode.

don't you have rectifier diodes in your junk box? the 1N400X diodes are the most common and you can find them in almost anything electronic.
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Old 8th October 2005, 06:56 PM   #9
Nordic is offline Nordic  South Africa
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Would the x represent the amperage rateing?
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Old 8th October 2005, 07:00 PM   #10
djQUAN is offline djQUAN  Philippines
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nope. X represents the PIV or peak inverse voltage.

all the 1N400X diodes are 1A.

1=50V
2=100V
3=200V
4=400V
5=600V
6=800V
7=1000V
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