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Re: Power transistorer i parallel (igen)
Den mandag den 31. marts 2014 21.52.03 UTC+2 skrev Karl Erik Christensen:
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alex

Re: Power transistorer i parallel (igen)
Den 31-03-2014 22:23, Alex skrev:
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at R2 stabiliserede TIP2955'erne. Det fattede jeg ikke en pind af.

Karl Erik.


Re: Power transistorer i parallel (igen)
Den 31-03-2014 22:36, Karl Erik Christensen skrev:
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--  
Ulrik Smed
Aarhus

Re: Power transistorer i parallel (igen)
Den 31-03-2014 23:14, Ulrik Smed skrev:



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Det undrede mig at mange af de forholdsvis ens konstruktioner jeg har  

til 100R, men oftest fra 10R til 50R.

5Watt udgave.



(Low Drop Out).
Kender nogen den?
Eller findes der bedre egnede?
Variable udgaven klarer vist lige 13.8V.

Karl Erik.


Re: Power transistorer i parallel (igen)
Den 01-04-2014 00:00, Karl Erik Christensen skrev:
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http://www.electroschematics.com/8032/78xx-voltage-regulator-extension/


Her er den 1R2 ved 1 paralleltransistor, og 2R2 ved 2 transistorer.




Karl Erik.


Re: Power transistorer i parallel (igen)
Den tirsdag den 1. april 2014 14.01.58 UTC+2 skrev Karl Erik Christensen:
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p
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en, i
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ere  
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ar gavnlig.
derefter har alle sat den,for ikke at blive til grin af dem der tror de er  




...men det sidste du henviste til,gav mig pointen.....jo fordi her er der j

.  











ale

Re: Power transistorer i parallel (igen)
Den 01-04-2014 18:52, Alex skrev:













med en L200 som regulator, og 3 stk. BDV64A Darlington PNP'er i parallel.






Ingen forklarer i hvert fald hvorfor de bruger den. Kun det ene sted har  
jeg set en vagt formuleret forklaring: "Af stabilitets hensyn".

Karl Erik.


Re: Power transistorer i parallel (igen)
Den tirsdag den 1. april 2014 21.15.40 UTC+2 skrev Karl Erik Christensen:
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n.

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tional.
Hvis jeg referer til den sidste link du sendte med"78xx"  







fra fuld last til nul i et hug..
Da der ikke er en diode i serie med R2 kan man vel betragte R2 som aflede m
odstanden.

de AN 103-4   og det vidste jeg ikke ..alex

Re: Power transistorer i parallel (igen)
Den 01-04-2014 22:25, Alex skrev:
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Karl Erik.


Re: Power transistorer i parallel (igen)
On 01-04-2014 22:34, Karl Erik Christensen wrote:
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http://www.repeater-builder.com/astron/pdf/an-103-lm340-lm78xx-series-three-terminal-positive-regulators.pdf


klogere.

mvh Erik

Re: Power transistorer i parallel (igen)
Den 01-04-2014 23:08, Erik skrev:
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Karl Erik.


Re: Power transistorer i parallel (igen)
On 02-04-2014 00:03, Karl Erik Christensen wrote:
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Mvh Erik

Re: Power transistorer i parallel (igen)




mvh Erik

Re: Power transistorer i parallel (igen)
Den 02-04-2014 00:49, Erik skrev:



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transistorer du bruger i parallel".






Hans :-)

Karl Erik.


Re: Power transistorer i parallel (igen)
Den onsdag den 2. april 2014 01.31.59 UTC+2 skrev Karl Erik Christensen:
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DC
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er tale om,
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ive  
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R2".
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ct.  
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eguleret 12 v udgang og til stel .  









anonym

Re: Power transistorer i parallel (igen)
On 02-04-2014 18:47, Alex wrote:

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mvh Erik

Re: Power transistorer i parallel (igen)
Den 02-04-2014 22:32, Erik skrev:
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17V ind.















Mon jeg har givet ham et chock?

Karl Erik.


Re: Power transistorer i parallel (igen)
On Wed, 02 Apr 2014 00:49:13 +0200, Erik wrote:




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Jeg ved ikke hvor dine data kommer fra.

Se her: http://www.onsemi.com/pub/Collateral/TIP3055-D.PDF




--  
mvh
Orla Pedersen
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Re: Power transistorer i parallel (igen)
On 03-04-2014 10:04, Orla Pedersen wrote:
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  Kommer herfra  
http://pdf1.alldatasheet.com/datasheet-pdf/view/2776/MOSPEC/TIP2955.html

De min. 20 er ved 5A.


siden af er jeg da ikke, specielt da han taler om at parallelkoble flere  


Mvh Erik






Re: Power transistorer i parallel (igen)
On 31-03-2014 22:23, Alex wrote:
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Mvh Erik


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