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
-- 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 app
Mike, Contact Dick Frey, K4XU. Dick is Manager of RF Products at APT. I believe the ARF1505 is the subject of an article in QEX (July?), is being used in a Tokyo High Power Labs amplifier and "may" b
Mike, Contact Dick Frey, K4XU. Dick is Manager of RF Products at APT. I believe the ARF1505 is the subject of an article in QEX (July?), is being used in a Tokyo High Power Labs amplifier and "may" b
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 KE6C
On the output perhaps. 5000pF Cin will make broadband input matching very interesting! Steve _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest
With a gain of approximately 16dB, it could have about 67 watts going into a shunting resistor and still get 1KW out of a pair with a 100 watt transceiver. I think this is similiar to the way they do
The 5400pF is measured at 1MHz, but it's not going to change that much at other frequencies, and at the upper end of hf Zi looks like a half decent short circuit. Maybe matching at the top end and th
Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
Date: Thu, 6 Jul 2006 15:37:21 +0200 (CEST)
at other frequencies, and at the upper end of hf Zi looks like a half decent short circuit. Maybe matching at the top end and then frequency tailoring an input attenuator will work.< I make the input
The datasheet says +j0.6 at 27MHz - looking at the figures for 13/27/40MHz, Zi models roughly as 9nH in series with 5400pF in series with 0.3R. The inductance sounds about right for the bond wires. O
I received a note from K4XU the other evening ... The Tokyo High Power article was missing from the July QEX - no reason why it did not appear. Both THP and Dick were surprised as they had been told
For those interested ... Richardson's (www.rell.com) small volume price (on the ARF1500, etc.) is about $235 - with a minimum purchase of four. There are currently no application notes available from