The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 1977
Filed:
Mar. 25, 1976
Applicant:
Inventor:
Robert J Buck, Fairfield, CT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ; H03K / ;
U.S. Cl.
CPC ...
236 / ; 3072 / ; 361165 ;
Abstract
An electronic temperature control system utilizes a circuit having two main terminals for connection to a low voltage relay control system of the type generally used in residential heating or cooling systems without the need for an auxiliary source of power. The circuit includes a temperature sensing thermistor, an adjustable reference voltage control, a programmable unijunction transistor voltage threshold detector circuit, power switching thyristor means and bridge diodes. Heat anticipation is provided by thermally coupling the thyristor switching means and the temperature sensing thermistor.