AudioCircle

Industry Circles => Bryston Limited => Topic started by: DarqueKnight on 4 Dec 2017, 09:25 am

Title: BDP-3 Power Supply
Post by: DarqueKnight on 4 Dec 2017, 09:25 am: @James Tanner,

The Bryston website says the BDP-3 has an:

"Improved power supply delivering over 5 amps"

Is the BDP-3's power supply improved over the BDP-2?
Title: Re: BDP-3 Power Supply
Post by: James Tanner on 4 Dec 2017, 02:11 pm: Quote from: DarqueKnight on 4 Dec 2017, 09:25 am
@James Tanner,

The Bryston website says the BDP-3 has an:

"Improved power supply delivering over 5 amps"

Is the BDP-3's power supply improved over the BDP-2?

I will ask Chris.

james
Title: Re: BDP-3 Power Supply
Post by: unincognito on 4 Dec 2017, 04:04 pm: I believe this is relative to the BDP-1, the power supply was left identical (specs) to the BDP-2 to allow older units to be upgraded. The BDP-3's power supply was simply updated to use a standby supply more commonly used in newer Bryston products and to meet new safety standards introduced since the release of the BDP-2.

Chris
Title: Re: BDP-3 Power Supply
Post by: Tympani on 4 Dec 2017, 05:24 pm: Speaking of power supplies, is it normal for the BDP2 to get very warm at the right rear top panel?
Title: Re: BDP-3 Power Supply
Post by: CanadianMaestro on 4 Dec 2017, 06:31 pm: Quote from: Tympani on 4 Dec 2017, 05:24 pm
Speaking of power supplies, is it normal for the BDP2 to get very warm at the right rear top panel?

Yep. :thumb:
Title: Re: BDP-3 Power Supply
Post by: CanadianMaestro on 7 Dec 2017, 12:47 pm: Quote from: unincognito on 4 Dec 2017, 04:04 pm
I believe this is relative to the BDP-1, the power supply was left identical (specs) to the BDP-2 to allow older units to be upgraded.

Chris

Since BDP-1 is no longer produced, the blurb on Bryston's site should really read,

"~~Improved~~ power supply delivering over 5 amps"

Loud and clear there, and not misleading.

Q: Why does a digital player with no analog output need 5 amps??
Title: Re: BDP-3 Power Supply
Post by: unincognito on 7 Dec 2017, 06:06 pm: Quote from: CanadianMaestro on 7 Dec 2017, 12:47 pm
Q: Why does a digital player with no analog output need 5 amps??

Mostly for getting the system up and running, when you initially turn on a computer every peripheral generally goes to max stated current usage for a few seconds. If the power supply is to wimpy then you just end up in a loop of reboots. Considering a typical desktop PC power supply pumps out 20amps on its 12v rail alone, a laptops power supply is probably somewhere between 4-6 amps, our 5amp supply is about where it should be for the hardware configuration/possible hardware configurations.
Title: Re: BDP-3 Power Supply
Post by: Pundamilia on 7 Dec 2017, 09:57 pm: Better to have a few amps in reserve to support external hard drives etc. than to have the unit gasping for power.
Title: Re: BDP-3 Power Supply
Post by: R. Daneel on 11 Dec 2017, 01:24 pm: Yes, the toroid in BDP-1 delivered a single Ampere of current. BDP-2 delivered five times that and as a result uses two shunt-type regulators rather than one.

These regulators are coupled to the bottom panel of the device making this the hottest spot when it warms up.