Method and apparatus for heating a thermionic detector source
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 12, 1995
Issued Date -
N/A
app pub date -
Mar 2, 1995
filing date -
Nov 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The bead source for the thermionic detector of a gas chromatograph is heated by the secondary winding of a transformer having a center-tapped primary and operating in the push-pull configuration. The voltage drop across the bead is compared with a preselected reference voltage and an error signal is generated. The error signal is used to control the output of a pulse width modulation control which supplies the transformer primary winding.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully