TEMPERATURE CONTROL CIRCUIT FOR HEATER
PURPOSE:To obtain an on/off temperature difference of nearly the same quantity regardless of the setting temperature by providing a means varying the amplification factor of a temperature conversion input signal in response to the setting temperature. CONSTITUTION:The temperature conversion input si...
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| creator | NARUO MASAYUKI |
| description | PURPOSE:To obtain an on/off temperature difference of nearly the same quantity regardless of the setting temperature by providing a means varying the amplification factor of a temperature conversion input signal in response to the setting temperature. CONSTITUTION:The temperature conversion input signal is inputted to a noninverting input terminal of an amplifier A1, an inverting input terminal of the amplifier A1 is connected to ground via a resistor R1 and connected to an output terminal of the amplifier A1 via a resistor R2 and a variable resistor VR. Further, the output of the amplifier A1 is rectified and smoothed by a diode D and a capacitor C and inputted to an inverting input terminal of a comparator CP1, where said output is compared with a prescribed value. Through the constitution above, the gain control is applied in response to the setting temperature, then the change of rate of the voltage per 1 deg.C after the output of the amplifier A1 is kept nearly equal independently of the setting temperature. Thus, the on/off temperature difference of nearly the same quantity is obtained even when the on-off control is performed by applying a feedback of a prescribed voltage in a switching circuit comprising the comparator. |
| format | Patent |
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CONSTITUTION:The temperature conversion input signal is inputted to a noninverting input terminal of an amplifier A1, an inverting input terminal of the amplifier A1 is connected to ground via a resistor R1 and connected to an output terminal of the amplifier A1 via a resistor R2 and a variable resistor VR. Further, the output of the amplifier A1 is rectified and smoothed by a diode D and a capacitor C and inputted to an inverting input terminal of a comparator CP1, where said output is compared with a prescribed value. Through the constitution above, the gain control is applied in response to the setting temperature, then the change of rate of the voltage per 1 deg.C after the output of the amplifier A1 is kept nearly equal independently of the setting temperature. Thus, the on/off temperature difference of nearly the same quantity is obtained even when the on-off control is performed by applying a feedback of a prescribed voltage in a switching circuit comprising the comparator.</description><language>eng</language><subject>CONTROL OR REGULATING SYSTEMS IN GENERAL ; CONTROLLING ; ELECTRIC HEATING ; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS ; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS ; PHYSICS ; REGULATING ; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><creationdate>1987</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19870130&DB=EPODOC&CC=JP&NR=S6222102A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19870130&DB=EPODOC&CC=JP&NR=S6222102A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NARUO MASAYUKI</creatorcontrib><title>TEMPERATURE CONTROL CIRCUIT FOR HEATER</title><description>PURPOSE:To obtain an on/off temperature difference of nearly the same quantity regardless of the setting temperature by providing a means varying the amplification factor of a temperature conversion input signal in response to the setting temperature. CONSTITUTION:The temperature conversion input signal is inputted to a noninverting input terminal of an amplifier A1, an inverting input terminal of the amplifier A1 is connected to ground via a resistor R1 and connected to an output terminal of the amplifier A1 via a resistor R2 and a variable resistor VR. Further, the output of the amplifier A1 is rectified and smoothed by a diode D and a capacitor C and inputted to an inverting input terminal of a comparator CP1, where said output is compared with a prescribed value. Through the constitution above, the gain control is applied in response to the setting temperature, then the change of rate of the voltage per 1 deg.C after the output of the amplifier A1 is kept nearly equal independently of the setting temperature. Thus, the on/off temperature difference of nearly the same quantity is obtained even when the on-off control is performed by applying a feedback of a prescribed voltage in a switching circuit comprising the comparator.</description><subject>CONTROL OR REGULATING SYSTEMS IN GENERAL</subject><subject>CONTROLLING</subject><subject>ELECTRIC HEATING</subject><subject>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>FUNCTIONAL ELEMENTS OF SUCH SYSTEMS</subject><subject>MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS</subject><subject>PHYSICS</subject><subject>REGULATING</subject><subject>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1987</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFALcfUNcA1yDAkNclVw9vcLCfL3UXD2DHIO9QxRcPMPUvBwdQxxDeJhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfFeAcFmRkZGhgZGjsZEKAEAmIAjgw</recordid><startdate>19870130</startdate><enddate>19870130</enddate><creator>NARUO MASAYUKI</creator><scope>EVB</scope></search><sort><creationdate>19870130</creationdate><title>TEMPERATURE CONTROL CIRCUIT FOR HEATER</title><author>NARUO MASAYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS6222102A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1987</creationdate><topic>CONTROL OR REGULATING SYSTEMS IN GENERAL</topic><topic>CONTROLLING</topic><topic>ELECTRIC HEATING</topic><topic>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>FUNCTIONAL ELEMENTS OF SUCH SYSTEMS</topic><topic>MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS</topic><topic>PHYSICS</topic><topic>REGULATING</topic><topic>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</topic><toplevel>online_resources</toplevel><creatorcontrib>NARUO MASAYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NARUO MASAYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TEMPERATURE CONTROL CIRCUIT FOR HEATER</title><date>1987-01-30</date><risdate>1987</risdate><abstract>PURPOSE:To obtain an on/off temperature difference of nearly the same quantity regardless of the setting temperature by providing a means varying the amplification factor of a temperature conversion input signal in response to the setting temperature. CONSTITUTION:The temperature conversion input signal is inputted to a noninverting input terminal of an amplifier A1, an inverting input terminal of the amplifier A1 is connected to ground via a resistor R1 and connected to an output terminal of the amplifier A1 via a resistor R2 and a variable resistor VR. Further, the output of the amplifier A1 is rectified and smoothed by a diode D and a capacitor C and inputted to an inverting input terminal of a comparator CP1, where said output is compared with a prescribed value. Through the constitution above, the gain control is applied in response to the setting temperature, then the change of rate of the voltage per 1 deg.C after the output of the amplifier A1 is kept nearly equal independently of the setting temperature. Thus, the on/off temperature difference of nearly the same quantity is obtained even when the on-off control is performed by applying a feedback of a prescribed voltage in a switching circuit comprising the comparator.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES |
| title | TEMPERATURE CONTROL CIRCUIT FOR HEATER |
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