Beresford Bushmaster DAC

[Puffin]

No linky?

[DaveK]

Hi Rob,
That wasn't very bright of me was it? Well I have been up since 7.30am wthout my afternoon nap so I've got a little excuse .
Here wiggo: -

http://cgi.ebay.co.uk/ws/eBayISAPI.d...59&refid=store

Sorry folks, old age 'n' all that.
Dave.

[northwest]

I don't know whether Stan would like to comment (Stan ?) but I came across this and thought it might be a cost effective linear PSU for the Bushmaster and existing Stan-DACs. It's voltage is readily adjustable between 11 and 15v.
Hope it's of interest,
Dave.

Very interesting that and in my price bracket too! Who is going to be the guinea pig and buy one first?

[StanleyB]

It wouldn't be of much use with the Bushmaster. The external power supply is used as a battery charger on the Bushmaster.

[Mark Grant]

Hi Rob,
That wasn't very bright of me was it? Well I have been up since 7.30am wthout my afternoon nap so I've got a little excuse .
Here wiggo: -

http://cgi.ebay.co.uk/ws/eBayISAPI.d...59&refid=store

Dave.

Hello Dave,

Not sure what makes you think it is a linear PSU, does not say anywhere in the description.

The specs say it weighs 600 grams and can output 12 volts at up to 7 amps, a transformer capable of that would weight more than 600 grams without a case etc.

Also on the Conrad site is it described as ' voltageswitch Power Supply'

http://shop.conrad-uk.com/1/2-a2-uk0...fsp-1207-.html

The pdf download from that link explains it.

[seoirse2002]

Halfway through March now....any update on the delivery for the Bushmaster Stan?
GT

[StanleyB]

I am spending most of my time on getting it ready, which is why I am hardly on AoS at the moment.

[jandl100]

Quit nagging, folks!
The more time Stan spends answering "Are we there yet?" questions, the longer it'll take to get there.

I feel sure that Stan will let us know when it's ready to ship, or if there is anything to report.

[DaveK]

Hello Mark,
Thanks for pointing that out - dohhhh, my brain 'urts .
I can think of a few possible explanations, the most likely being that I was looking at other Conrad listings (which I was ) that were linear and of similar build, and totally missed the fact that this one wasn't, or
the seller subsequently revised his listing to withdraw any linear reference - if you look at the list of revisions to the listing there have been many (but I'm clutching at straws here, TBH ).
Sorry to all for the confusion.
BTW I'm surprised that no one has reacted to Stan's comment that the Bushmaster is battery powered - that is news to me and quite significant isn't it?
Dave.

[StanleyB]

BTW I'm surprised that no one has reacted to Stan's comment that the Bushmaster is battery powered - that is news to me and quite significant isn't it?

It is a big power capacitor that is used as a power source. I coined the term VirtualDC when I first introduced that process in the TC-7510. The Bushmaster is using an updated revision of that circuit. But more about the subject in due course. I am not sure I got the time and capital to patent it, so that's one reason why I don't want to describe the principle of operation. But it has had a good track record in the TC-7510 and has proven its usefulness in providing a low noise DC power supply. The added advantage of that circuit is that you can use a battery to power the Bushmaster. I posted a picture earlier in this thread where I demonstrated that.