mit nye ur (advarsel: quartz-indhold)

[Geodoc]

camaro Skrev:Accu-quartz og Beta21 har ikke noget med stemmegaffel at gøre.

... hvilket på ingen måde har været påstået.

Fra: OMEGA 1300 ELECTROQUARTZ f8192Hz BETA21 1970 citeres om Beta21:

Citat:The movement looks like an advanced and complex prototype and consists of three separate modules that were produced by CEH (circuitry), Ebauches (movement), Omega (motor).
Once a battery is inserted it activates a quartz crystal resonating at a frequency of 8192Hz which is divided by the electronic circuit into smaller impulses.
There were no micro stepping motors available at that time so the B21 was based on the Accutron idea.
Instead of a tuning fork there is a resonating rod with permanent magnet on one end and an adjustable counter weight on the opposite end.
The resonator with jeweled index finger is put into vibration by the motor module - an electromagnetic coil controlled by impulses from the electronic module.
The vibrating index finger provides motion to the index wheel so the concept is nearly identical with the Accutron except that a quartz and chip have been added on top as frequency precision instruments.

.... undskyld, at jeg benyttede lejligheden til at påpege kuriøsiteten, at Beta21's kraftoverførsel er lig med stemmegaffelværkets, altså med klinke.

Med venlig hilsen - Geodoc