Power control circuit for improved power application and tempera

Details Power control circuit for improved power application and tempera Power control circuit for improved power application and tempera

1994-03-14

1994-12-06

Stephan, Steven L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

62 33, H02M 542, F25B 2102

Patent

active

053716655

ABSTRACT:
A power control circuit for improved temperature control of thermoelectric devices to maintain the temperature of thermoelectric devices at a set point. The circuit includes an electrical power source; a rectifying device to provide rectified alternating current from the electrical power source; a comparator device; circuitry for providing a predetermined voltage to the inverting input of the comparator device derived from the rectified alternating current; a sensor device to monitor the temperature associated with the thermoelectric device; circuitry for providing an adjustable DC voltage to the non-inverting input of the comparator; a programmable control device to receive an output from the sensor device and provide an output to the circuitry for providing an adjustable DC voltage; a switching device connected between the thermoelectric device and the rectified alternating current; and control circuitry which is coupled between the switching device and the output of the comparator device and is controlled by the output of the comparator device, the control circuitry activates and deactivates the switching device to apply power to the thermoelectric device when the operating temperature of the thermoelectric device is different than the set point temperature to maintain the thermoelectric device at the set point temperature with minimum variations therefrom. A push-pull transistor configuration is used with the "pulse positioning" power supply allowing bi-polar control of thermoelectric device assemblies.

REFERENCES:
patent: 2416152 (1947-02-01), Braun
patent: 2713655 (1955-07-01), Grubman
patent: 4301658 (1981-11-01), Reed
patent: 4459468 (1984-07-01), Bailey
patent: 4587563 (1986-05-01), Bendell et al.
patent: 4833888 (1989-05-01), Kerner et al.
patent: 4844072 (1989-07-01), French et al.
patent: 4935864 (1990-06-01), Schmidt et al.
patent: 5035052 (1991-07-01), Suzuki et al.
patent: 5043560 (1991-08-01), Masrelies
patent: 5097829 (1992-03-01), Quisenberry
patent: 5128517 (1992-07-01), Bailey
patent: 5128854 (1992-07-01), Raets
patent: 5172689 (1992-12-01), Wright
patent: 5174121 (1992-12-01), Miller
patent: 5190032 (1993-03-01), Zacol
patent: 5197294 (1993-03-01), Galvan et al.
patent: 5213152 (1993-05-01), Cox

Affiliated with

Also associated with

Rating

Power control circuit for improved power application and tempera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power control circuit for improved power application and tempera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power control circuit for improved power application and tempera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-219006