LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #20   Report Post  
Old March 1st 06, 02:04 PM posted to rec.radio.amateur.homebrew
xpyttl
 
Posts: n/a
Default mixer: DBM or dual gate mosfet?

wrote in message
...

If you building a radio that runs on
batteries then using more power may be bad.


Also keep in mind that more power=more heat

If you are building a simple analog VFO, temperature compensating the VFO
can be the most tedious part of designing a receiver. Depending on how
tight your box is, the difference in heat could be an issue. Keeping the
oscillator stable while delivering more power also means more buffer stages
between the VFO and the mixer.

If you are designing with a DDS, of course, all this is pretty much moot.
With a typical DDS chip and a packaged clock oscillator at some high
frequency, the oscillator will draw so much current and generate so much
heat that what the mixer requires is invisible.

...




 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
40673 dual gate mosfet Mike Lee Shortwave 4 March 7th 09 06:43 PM
are the GRUNDIG YB550 / TECSUN PL230 dual conversion? ulTRAX Shortwave 9 November 20th 04 02:43 AM
XTAL oscillator with a XOR gate PaoloC Homebrew 26 April 22nd 04 08:54 AM
XTAL oscillator with a XOR gate PaoloC Homebrew 0 April 19th 04 07:53 AM


All times are GMT +1. The time now is 08:56 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017