LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #13   Report Post  
Old August 4th 17, 05:35 PM posted to uk.radio.amateur,uk.rec.models.engineering,rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Nov 2012
Posts: 989
Default A mechanical phase locked loop!

Jeff wrote on 8/4/2017 4:58 AM:


I don't know what you guys are seeing. The two pendulums of the Shortt
clock are in lock step. The fact that they are only compared every 30
seconds does not change the nature of the design.



What we are seeing is that even after the 30 second 'kick' the 2 pendulums
are NOT in phase.

They may well be 'a bit closer' in phase, but the kick just moves the
difference a fixed small amount in one direction, which may be sufficient to
bring the phases closer, or it may be too much and go through the in phase
point. With the design there is no time where the 2 pendulums are *held* in
phase.

The design in fact relies on the fact that the phase of the 2 pendulums is
constantly changing.


As is true for any PLL.

--

Rick C
 
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
WTD: 1 GHz Phase Locked Oscillator Richard W. Solomon, W1KSZ Swap 1 December 2nd 06 07:33 AM
Sherwood SE-3 MK III D Synchronous High-Fidelity Phase-Locked AM Product Detector RHF Shortwave 14 June 6th 06 08:00 AM
FA: Sherwood Engineering SE-3 HF Phase Locked Detector ve3tjd Swap 0 April 29th 06 07:25 PM
Phase-locked loop filter Damien Teney Homebrew 16 September 11th 03 10:12 AM
Phase-locked loop filter Damien Teney Homebrew 0 September 5th 03 05:02 PM


All times are GMT +1. The time now is 04:04 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017