I have seen interest in the past for a 1kw solid state amp on this link and
also for other solid state amps.
Possibly a group effort to build such an amp from two ARF1505's and
document it?
Mike KE6CVH and JA6WIY while stationed here in Japan
"m.ford" <k1ern@pioneerwireless.net> wrote:
----- Original Message -----
From: "mike kendall"
To:
Sent: Wednesday, July 05, 2006 11:45 AM
Subject:
> Hello,
> I have been looking at the Advanced Power Technologies, now owned by
> Microsemi, ARF1505 power MOSFET. It does
> 750watts power output and requires 300VDC. They have app notes and it claims
> to be easier to match than the 48vdc
> supply Motorola devices.
> Has anyone built one of these amps, a pair will get full legal limit no sweat
> and may be better than the typical
> MRF154 1KW amps. They appear to be very reasonable. The news link on them
> from a few years back stated around $150
> each in quantities of 100 units but I don't know how much in smaller
> quantities.
> This could possibly be a great topic for discussion and an outstanding
> project.
--------------------------------------------------------------------------------------------
It would be certain to garner more interest than the ongoing house wiring
seminar.
Mike k1ern
--------------------------------------------------------------------------------------------
They are supposed to use the same copper heat spreader and aluminum heat sink
that the Motorola applications notes use
and available from CCI (Communications Concepts Incorporated).
> The company also claims the power supply would be cheaper to build because of
> no need for a DC to DC converter as
> used in the 48VDC switching power supplies.
> These FET's are used with the medical applications and HF amplifiers. They
> work class A-E up to 30mhz and have a
> typical efficiency up to 75%
> I emailed the company for more info. and am waiting for a reply.
> Comments/discussion?
> 73,
> ETC(SW/AW) Mike Kendall USN
>
>
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