Re: LF: Class D current spikes

[<jrusgrove@comcast.net>]

Anyone have a U3S schematic handy? Link to same?

Jay W1VD

----- Original Message ----- 
From: "N1BUG" <paul@n1bug.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, February 26, 2019 2:01 PM
Subject: Re: LF: Class D current spikes


> Eric,
>
> I I have always run my U3S through the W1VD doubler. Never had any
> problems with blown FETs with that setup, even when I tested at 1 kW
> under Part 5 license. There is apparently something different about
> the U3S at end of RF envelope.
>
> 73,
> Paul
>
>
> On 2/26/19 12:52 PM, Chris Wilson wrote:
> > Hello Eric,
> >
> > No,  I have always run the U3S in X2 mode as far as I can remember. No
> > doubler,  no squarer, just straight out of CLK0 to Pin 3 of the 74F74.
> > And  no  issues  at all. Thanks. BTW, I really admire your old gear on
> > your web site, awesome build standards and so nice to look at!
> >
> > Tuesday, February 26, 2019, 5:35:10 PM, you wrote:
> >
> > > Just to clarify... did you say previously that the U3S also worked fine
> > > running at 1x and feeding a doubler, squarer, etc. also?