[minima] Re: A linear for the Minima
- From: Mvs Sarma <mvssarma@xxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Mon, 24 Feb 2014 18:39:02 +0530
Dear kevin, how about the gate capacitance of the new proposed device? Did
you consider the IRFZ44 , another device generally available as used in UPS
circuitry ?
On Mon, Feb 24, 2014 at 6:34 PM, Kevin Williams
<k.p.williams@xxxxxxxxxxxx>wrote:
> Another device that might be worth having a look at is the IRF510's big
> brother the IRFZ24N.
> I'm building an external amp at the moment that uses a pair of them and
> will (hopefully) run 50W for 1.5W drive at 12V!
> A low cost alternative for the RD16HHF10 perhaps?
> The IRFZ24N's go for around 67p here in the UK - cheap as chips!
>
> Kevin GW4WOV
>
> -----Original Message----- From: farhanbox@xxxxxxxxx
> Sent: Monday, February 24, 2014 1:02 AM
> To: minima@xxxxxxxxxxxxx
>
> Subject: [minima] Re: A linear for the Minima
>
> Mac,
> There are several ways to 10 watts.
> A. Just use 24V on the IRF510's drains. The 24V smps are quite cheap on
> the ebay, etc.
> B. Use an RD16HHF10 inplace of the ol' IRF510. You will have to use a
> trifilar winding in the final instead of the bifilar one.
> C. Use an external boot(my current solution).
>
> This amp is sort of non-scalable to higher power because of the driver
> chain. The amp is extremely easy to build as it is now. Being RC coupled,
> it is unreasonable to expect more than 3-4V peak from the drivers without
> substantial distortion. That limits how much power can be drawn from the
> final PA.
> Btw, on 7 and 3.5, you could expect far greater power from the current
> configuration.
> - f
> Sent from BlackBerry® on Airtel
>
>
--
Regards
Sarma
Other related posts:
