Bias current control for operational amplifier current/voltage converters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 20, 1992
Grant Date -
N/A
app pub date -
Nov 4, 1991
filing date -
Nov 4, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A Peltier cooling system for solid-state operational amplifiers reduces the bias current and allows the amplifier to perform at a level previously attained only by vacuum tube operational amplifiers. The amplifier is cooled with a Peltier junction substantially below the ambient to control the temperature very closely to a fixed value. A solid-state temperature detector is placed in thermal contact with the operational amplifier substrate. The sensor output, which is proportional to he absolute temperature of the operational amplifier, is fed to the temperature control circuitry. The control circuitry compares the sensor current with a temperature set point current, and the difference is used to control the cooler current.
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