Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼

Delete All


Preview PDF Download HTML

LS-5002 Datasheet(Fiches technique) 3 Page - PerkinElmer Optoelectronics

Numéro de pièce LS-5002
Description  Thyratrons
Télécharger  6 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  PERKINELMER [PerkinElmer Optoelectronics]
Site Internet
Logo PERKINELMER - PerkinElmer Optoelectronics

LS-5002 Datasheet(HTML) 3 Page - PerkinElmer Optoelectronics

  LS-5002 Datenblatt HTML 1Page - PerkinElmer Optoelectronics LS-5002 Datenblatt HTML 2Page - PerkinElmer Optoelectronics LS-5002 Datasheet HTML 3Page - PerkinElmer Optoelectronics LS-5002 Datenblatt HTML 4Page - PerkinElmer Optoelectronics LS-5002 Datenblatt HTML 5Page - PerkinElmer Optoelectronics LS-5002 Datenblatt HTML 6Page - PerkinElmer Optoelectronics  
Zoom Inzoom in Zoom Outzoom out
 3 / 6 page
background image
grid driver circuit design, and the
performance required from the
thyratron itself. Contact the appli-
cations engineering department at
PerkinElmer to discuss the spe-
cific details of your requirement.
Once the commutation interval
has ended, a typical hydrogen
thyratron will conduct with near-
ly constant voltage drop on the
order of 100 volts regardless of
the current through the tube.
Thyratrons open (recover) via
diffusion of ions to the tube inner
walls and electrode surfaces,
where the ions can recombine
with electrons. This process takes
from 30 to 150 microseconds,
depending on the tube type, fill
pressure, and gas (hydrogen or
deuterium). The theoretical maxi-
mum pulse repetition rate is the
inverse of the recovery time.
Recovery can be promoted by
arranging to have a small nega-
tive DC bias voltage on the con-
trol grid when forward conduc-
tion has ceased. A bias voltage of
50 to
100 volts is usually suffi-
Recovery can also be improved
by arranging to have small nega-
tive voltage on the anode after
forward conduction has ceased.
In many radar circuits, a few-per-
cent negative mismatch between
a pulse-forming network and the
load ensures a residual negative
anode voltage. In laser circuits,
classical pulse-forming networks
are seldom used, so inverse
anode voltage may not be easily
generated. Recovery then strong-
ly depends on the characteristics
of the anode charging circuit. In
general, charging schemes
involving gently rising voltages
(i.e., resonant charging and ramp
charging) favor thyratron recov-
ery, and therefore allow higher
pulse repetition rates. Fast ramp-
ing and resistive charging put
large voltages on the anode
quickly, thus making recovery
more difficult. The ideal charging
scheme from the viewpoint of
thyratron recovery is command
charging, wherein voltage is
applied to the thyratron only an
instant before firing.
Spark Gap
Figure 4. Typical Grid Spike Suppression Circuits
Figure 3. Grid Circuit

Html Pages

1  2  3  4  5  6 

Datasheet Download

Go To PDF Page

Lien URL

Privacy Policy
AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicit   |   Contactez-nous   |   Politique de confidentialit   |   Echange de liens   |   Manufacturer List
All Rights Reserved©

Mirror Sites
English :  |   English :  |   Chinese :  |   German :  |   Japanese :
Russian :  |   Korean :  |   Spanish :  |   French :  |   Italian :
Portuguese :  |   Polish :  |   Vietnamese :