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Old 25th May 2008, 01:12 PM   #1
Puffin is offline Puffin  United Kingdom
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Default Circuit Breakers

I was wondering if it would be possible to fit some protection to my chip amps.

I was looking at these. If they are suitable, where would you wire them in ? Between Live and tranny ?

http://www.maplin.co.uk/Search.aspx?...uit%20Breakers

http://www.maplin.co.uk/Media/product_pdfs/ak09.PDF

I also have some speaker protection thingys that use a relay, zener diodes and some caps. The only way (when testing) I could get the relay to trip was to apply DC current from the bridge rectifier. Presumably they are to stop DC. Is it worth using these ?
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Old 26th May 2008, 01:36 PM   #2
Puffin is offline Puffin  United Kingdom
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Default Re: Circuit Breakers

Quote:
Originally posted by Puffin
I was wondering if it would be possible to fit some protection to my chip amps.

I was looking at these. If they are suitable, where would you wire them in ? Between Live and tranny ?

http://www.maplin.co.uk/Search.aspx?...uit%20Breakers

http://www.maplin.co.uk/Media/product_pdfs/ak09.PDF

I also have some speaker protection thingys that use a relay, zener diodes and some caps. The only way (when testing) I could get the relay to trip was to apply DC current from the bridge rectifier. Presumably they are to stop DC. Is it worth using these ?
Anyone ?
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Old 26th May 2008, 03:09 PM   #3
Nuuk is offline Nuuk  United Kingdom
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Puffin, some say that a circuit breaker is better than a fuse and some say not.

I originally used those circuit breakers that also act as a mains switch figuring less connections make for a better sound. I now use fuses and can't honestly say that I can tell the difference between one of the other.

Speaker protection is a personal choice. Slight degradation of sound quality against peace of mind. If you drive speakers directly, ie not through a passive crossover, it could be considered more of a good idea.
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Old 26th May 2008, 04:01 PM   #4
Puffin is offline Puffin  United Kingdom
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Nuuk. Thanks for that. I tried wiring the Circuit Breaker into the live ac (240v) feed. It didn't seem to do anything. I am not sure what I was expecting it to do to be honest. Where do you think is the best place to wire them in ?
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Old 26th May 2008, 04:07 PM   #5
Nuuk is offline Nuuk  United Kingdom
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They go in place of a mains fuse ie before the mains switch.

Nothing will happen until your amp draws to much current and causes the circuit breaker to trip. In other words, no news is good news!
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Old 26th May 2008, 04:27 PM   #6
Puffin is offline Puffin  United Kingdom
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Yea, thought so, that's where I had them. Thanks
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Old 31st May 2008, 04:15 PM   #7
mikje is online now mikje  United States
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Puffin,
I used this one. I wired it in series with the incoming AC; between the mains plug and the transformer.

http://www.partsexpress.com/pe/showd...number=074-022
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