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  #11  
Old 27th February 2017, 11:04 PM
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pre65 pre65 is offline
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Default Re: What Silicon rectifiers for HT?

I'd consider something like this.

Nothing special but inexpensive.

http://www.ebay.co.uk/itm/KBPC-5010-...wAAOSw-0xYkLLo
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  #12  
Old 27th February 2017, 11:14 PM
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Default Re: What Silicon rectifiers for HT?

I quite like hybrid bridges.

This was part of one that I used on the mighty 833a monoblocks, and now used on my GK-71 monoblocks.

Can't remember what diodes they were, but I could find out if you are interested. Note the cap and resistor bypass as per Morgan Jones.

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  #13  
Old 28th February 2017, 11:14 PM
bikerhifinut bikerhifinut is offline
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Default Re: What Silicon rectifiers for HT?

Quote:
Originally Posted by pre65 View Post
I quite like hybrid bridges.

This was part of one that I used on the mighty 833a monoblocks, and now used on my GK-71 monoblocks.

Can't remember what diodes they were, but I could find out if you are interested. Note the cap and resistor bypass as per Morgan Jones.

I've been in the habit of bypassing silicon rectifiers for a long time now Philip.
I had very satisfying results with the standard UF5408 on the WD KT88 amp and never felt the need to use anything fancier.
Hybrids, ok If you must for me but I will be perfectly happy with silicon. especially as this set up will be potentially delivering quite high currents at around 400V.

A.
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  #14  
Old 1st March 2017, 10:23 AM
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Default Re: What Silicon rectifiers for HT?

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Originally Posted by bikerhifinut View Post
I've been in the habit of bypassing silicon rectifiers for a long time now Philip.
I had very satisfying results with the standard UF5408 on the WD KT88 amp and never felt the need to use anything fancier.
Hybrids, ok If you must for me but I will be perfectly happy with silicon. especially as this set up will be potentially delivering quite high currents at around 400V.

A.
No problems Andy.

I like hybrid bridges (with 6D22s damper diodes) for the slow warm up time, about 30 secs, which is a fair bit longer than the GZ series rectifiers.

To see the HT ramp up gradually when the damper diodes warm up rather than the solid state instantaneous "wham" puts a lot less "strain" on things.
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