PY500a

Doz · 18th January 2011, 10:20 AM

Any thoughts on the max. capacitance value? I've got 4 in a bridge , and was thinking of 100uF

hidnplayr · 18th January 2011, 10:32 AM

Try simulating it in PSUDII (PSUD2) and see if you dont pull too much peak current out of them..

Doz · 18th January 2011, 10:43 AM

Quote:

Originally Posted by hidnplayr

Try simulating it in PSUDII (PSUD2) and see if you dont pull too much peak current out of them..

The PY500 isn't listed, but I see what you mean.

Rod Coleman · 18th January 2011, 10:51 AM

PSUDii has a 6CJ3 built-in. The dynamic behaviour of these are very similar to PY500A - so you can simulate with your load, and see that the peaks are not above 1000mA, as per the PY spec.

IT's a fine rectifier, but best with choke input, IMHO.

316a · 18th January 2011, 10:55 AM

Quote:

Originally Posted by Rod Coleman

PSUDii has a 6CJ3 built-in. The dynamic behaviour of these are very similar to PY500A - so you can simulate with your load, and see that the peaks are not above 1000mA, as per the PY spec.

IT's a fine rectifier, but best with choke input, IMHO.

Agreed re. choke input although I find a small input cap can sometimes benefit . There is a 6D22S model which is close , the additional text .psu files on the Duncanamps website contains a PY500A model . PY500A is my favourite slow start rectifier

316A

Doz · 18th January 2011, 11:11 AM

Thanks... choke input isn't an option here I'm afraid

Doz · 18th January 2011, 11:12 AM

Quote:

Originally Posted by Rod Coleman

PSUDii has a 6CJ3 built-in. The dynamic behaviour of these are very similar to PY500A - so you can simulate with your load, and see that the peaks are not above 1000mA, as per the PY spec.

IT's a fine rectifier, but best with choke input, IMHO.

1000mA ? My sheet says 800mA ..

hidnplayr · 18th January 2011, 01:12 PM

PY500a is listed in my list, probably got it from here: PSUD rectifier list

Rod Coleman · 18th January 2011, 02:02 PM

Quote:

Originally Posted by Doz

1000mA ? My sheet says 800mA ..

http://www.mif.pg.gda.pl/homepages/f...0/p/PY500A.pdf

See Iap

Doz · 19th January 2011, 07:53 AM

Quote:

Originally Posted by Rod Coleman

http://www.mif.pg.gda.pl/homepages/f...0/p/PY500A.pdf

See Iap

I stand corrected ... my sheet is for a PY500 .... 800mA PY500A 1000mA

Anyhow , I should be able to put 220uF as the first cap without issues ... more than enough and then some ... the bottle count for this project is getting out of hand

18th January 2011, 10:20 AM	#1
Doz diyAudio Member Join Date: Jul 2010 Location: Sat Down	PY500a Any thoughts on the max. capacitance value? I've got 4 in a bridge , and was thinking of 100uF

18th January 2011, 10:32 AM	#2
hidnplayr diyAudio Member Join Date: Sep 2008	Try simulating it in PSUDII (PSUD2) and see if you dont pull too much peak current out of them.. __________________ Real tubes have top-caps

18th January 2011, 01:12 PM	#8
hidnplayr diyAudio Member Join Date: Sep 2008	PY500a is listed in my list, probably got it from here: PSUD rectifier list __________________ Real tubes have top-caps

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18th January 2011, 10:51 AM	#4
Rod Coleman работник diyAudio Member Join Date: Jul 2004 Location: Warwickshire UK	PSUDii has a 6CJ3 built-in. The dynamic behaviour of these are very similar to PY500A - so you can simulate with your load, and see that the peaks are not above 1000mA, as per the PY spec. IT's a fine rectifier, but best with choke input, IMHO.

18th January 2011, 11:11 AM	#6
Doz diyAudio Member Join Date: Jul 2010 Location: Sat Down	Thanks... choke input isn't an option here I'm afraid

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