Return to KLUBNL.PL main page

[Top] [All Lists]

LF: RE: Tx driver chips

To: [email protected]
Subject: LF: RE: Tx driver chips
From: "Talbot Andrew" <[email protected]>
Date: Wed, 13 Jun 2001 11:43:43 +0100
Reply-to: [email protected]
Sender: <[email protected]>
Instead of trying to control nanosecond long crossover problems and skew in
driver chip propagation times, why not employ the Decca Tx approach of a
small value (damped) inductor between the top and bottom power devices to
'soak up' the high current short pulses.
It certainly works in my direct from mains Tx.

Andy  G4JNT

-----Original Message-----
From: Rik Strobbe [mailto:[email protected]]
Sent: 2001-06-13 12:01
To: [email protected]
Subject: Re: LF: RE: 73kHz tests tonight

At 10:25 13/06/01 +0200, you wrote:
>Could TC4428 be keyed in G3YXM design? If so, it would simplify the whole
>Petr, 'FIG


That idea crossed my mind 2 years ago when building my TX (variation on the
YXM design). But due to different delay times in the inverting and
non-inverting drivers (I measured abt. 25ns difference) I didn't use the
4428 it.
If you don't wan't to use a flip-flop to get the counter-phase signals you can use a couple of CMOS XOR gates, with a CD4077 running on 15V I measured
less than 3ns difference between the inverting and non inverting gate.

73, Rik ON7YD

The Information contained in this E-Mail and any subsequent correspondence
is private and is intended solely for the intended recipient(s).
For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is
prohibited and may be unlawful.

<Prev in Thread] Current Thread [Next in Thread>
  • LF: RE: Tx driver chips, Talbot Andrew <=