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Bharat Shenoy

Don’t Let Lightning-Induced Surges Shock You (or Your Spacecraft)

Bharat Shenoy
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SachinEE
SachinEE
10/31/2014 8:52:27 PM
User Rank
Master
Re: Overheads
One of the ways to ensure this would be to have a checklist whereby no design can go into production unless the circuit protection is adequate and that there's a go-ahead from the member of the design team who looks after circuit protection.

@tzubair, I totally agree with you. If we implement measures such as checklist then I am sure we can make sure that no design goes into production without the circuit protection. I think different companies have different approach towards this and very few companies follow checklist method to qualify the product.

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SachinEE
SachinEE
10/31/2014 8:45:21 PM
User Rank
Master
Re: Overheads
This may be the case in other developed countries but the kind of companies that I have worked with, they have yet to make circuit protection a necessity.

@tzubair, circuit protection circuit is an optional circuit. If you have it in your product your product will be more reliable. Finally i think it all depends on the price, if the price of the product is more you would want to provide extra reliability by providing such circuits.

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SachinEE
SachinEE
10/31/2014 8:40:58 PM
User Rank
Master
Re: Overheads
When you're producing them commercially then cost becomes important and each addition to the design adds to the total cost. 

@tzubair, I agree with you. Cost is important parameter as well and hence we should always keep in mind about cost and make sure that we provide reliable product at reasonable price.

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SachinEE
SachinEE
10/31/2014 8:38:42 PM
User Rank
Master
Re: Overheads
This means the designer, if takes care to employ these protection components, by default, empowers the circuitry to perform under such conditions.

@vasanjk, I agree with you. I think all this info is mentioned in the datasheet and hence we should refer to the datasheet before we choose the appropriate component.

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tzubair
tzubair
10/31/2014 7:11:56 PM
User Rank
Master
Re: Overheads
@yalanand: This may be the case in other developed countries but the kind of companies that I have worked with, they have yet to make circuit protection a necessity. For them it's something they're still considering a luxury to have in a circuit.

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tzubair
tzubair
10/31/2014 6:55:24 PM
User Rank
Master
Re: Overheads
"I dont think its good idea to save some cost by not having circuit protection circuit. Its always better to provide circuit protection since it improves the reliabiilty of the product."

@yalanand: This logic may work if you're dealing with one, two or a handful of cicruits. When you're producing them commercially then cost becomes important and each addition to the design adds to the total cost. This is why I mentioned that it is important to consider the costs sometimes.

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samicksha
samicksha
10/31/2014 4:25:31 PM
User Rank
Artist
Re: Circuit protection- behind the scenes
TVS will fail if they are subjected to conditions beyond those that the particular product was designed to accommodate.

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Ranasinghe
Ranasinghe
10/31/2014 2:34:13 PM
User Rank
Master
Re: Overheads
Exactly, this will impact the final price of the product and for sure there will be a market for the quality product always. 

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vasanjk
vasanjk
10/31/2014 11:32:49 AM
User Rank
Master
Re: Overheads
TVS diodes, Ferrite beads, Varistors etc are manufactured so as to protect electronic components in extreme conditions. This means the designer, if takes care to employ these protection components, by default, empowers the circuitry to perform under such conditions.

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yalanand
yalanand
10/31/2014 6:00:38 AM
User Rank
Master
Re: Circuit protection- behind the scenes
Human Body Model (HBM), Machine Model (MM) and Charged Device Model (CDM).

@Netcrawl, Human body is modeled by a 100 pF capacitor and a 1500 ohm discharging resistance. I am curious to know how did we arrive at those numbers ?


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More Blogs from Bharat Shenoy
Without even thinking about it, consumers depend on technology throughout the day as they send texts, turn on lights, and drive home from the office. But that technology depends on something that usually goes unnoticed until there's a problem.
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Simply deciphering the information in manufacturer datasheets and comparing them with the application's requirements can be extremely time-consuming.
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