摘要:
A method includes generating an input voltage for an operational amplifier from a received electromagnetic signal in a receiver unit by an input resistance and generating an output voltage by the operational amplifier by a fixed amplification factor. The input voltage is changed until the output voltage lies within a predefined interval that includes the value of the reference voltage. The input voltage is tapped at a divider node of a voltage divider. The gate voltage of the MOS transistor, operating within a nonlinear range and connected to the divider node, is changed to adjust the output voltage to the reference voltage such that a forward resistance of the transistor is changed nonlinearly. A field strength value received by the receiver unit is determined from a comparison of the value of the present gate voltage with quantities assigned to stored gate voltage values.
摘要:
A passive entry and/or passive go system and am associated operating method is provided. According to an embodiment of the invention, the following steps are performed in an electronic key of the passive entry and/or passive go system: generation of a reference input value, supplying the antenna circuit with the reference input value, measurement of the characteristic parameters, while the antenna circuit is supplied with the reference input value, storage of the characteristic parameters, measurement of a first output value of the antenna circuit, and determination of the field strength from the first output value and the characteristic parameters, whereby an effect of the characteristic parameters on the field strength is compensated. Use, for example, in motor vehicles.
摘要:
A receiving unit including an operational amplifier having a fixed gain receives an electromagnetic signal, from which a voltage divider with a variable resistance generates an input voltage for the amplifier. The amplifier's output voltage is compared with a reference voltage. The variable input resistance is adjusted to vary the amplifier's input voltage, until the amplifier's output voltage lies within a defined range around the reference voltage. This adjusted resistance value is compared with nominal resistance values previously stored in a value field and respectively allocated to field strength values, to determine a field strength of the received signal. A circuit arrangement includes an operational amplifier, a memory unit connected to a processor unit, a first voltage divider, a second voltage divider, and a control element that controls the second voltage divider to provide the controlled variable input resistance. The processor unit reads the control state of the control element to determine the adjusted input resistance, and therefrom determines the field strength value of the received signal.
摘要:
A receiver amplifier for amplifying a photoelectric current produced by a light-sensitive semiconductor component. The amplifier includes an amplifier transistor, a capacitor connected between the light-sensitive conductor component and the amplifier transistor for isolating signals with a frequency below a certain threshold delivered by the semiconductor components from the amplifier transistor, and a second transistor connected to the amplifier transistor for producing a current which compensates for changes in the current produced by the light-sensitive semiconductor component in response to light pulses.
摘要:
Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## andeach R.sub.1 and the ##STR3## radical to which it is attached, taken together, independently, are ##STR4## wherein ring B may be substituted by one substituent selected from halogen, C.sub.1-4 alkyl and C.sub.1-4 alkoxy, and each R.sub.3 is independently C.sub.1-4 alkyl, orwherein the ** denotes the carbon atom attached to X, or each A, R.sub.3 and the ##STR5## radical to which they are attached, taken together, independently, are each R.sub.1 and the ##STR6## radical to which it is attached, taken together, independently, are the radical of an aromatic carbocyclic or heterocyclic coupling component, ##STR7## wherein each R.sub.21 is independently halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,p is 0, 1 or 2,the * denotes the carbon atom attached to the --N.dbd.N-- radical, andthe ** denotes the carbon atom attached to X,eachA.sub.1 and A.sub.2 taken together are --O--Me--O--, wherein Me is copper, cobalt, iron, nickel, manganese or zinc, oreachA.sub.1 is hydroxy, andeachA.sub.2 is independently hydrogen, hydroxy or C.sub.1-4 alkoxy,X is a direct bond or a bridging radical,eachY is independently a direct bond, C.sub.1-4 alkylene, --CO--NH--(CH.sub.2).sub.m -***, --NH--CO--(CH.sub.2).sub.m *** or --SO.sub.2 --NR.sub.4 --(CH.sub.2).sub.m -***, wherein R.sub.4 is hydrogen or C.sub.1-4 alkyl,m is 1, 2, 3 or 4, and the *** denotes the carbon atom attached to the Z group, each Z is independently ##STR8## wherein A.sup..crclbar. is a non-chromophoric anion,m is 1, 2, 3 or 4, andp is 0, 1 or 2, andn is at least 2,with the provisos that (i) the compound is free of sulfo groups, and (ii) when the compound is in metal-free form, each A, R.sub.3 and the ##STR9## radical to which they are attached form a group of formula (b) and each R.sub.1 and the ##STR10## radical to which it is attached together form a 1-phenylpyrazole group the phenyl ring of which is substituted by one --Y--Z group, which compounds are useful for dyeing and printing paper, leather, textile materials comprising natural or regenerated cellulose (for example, cotton, mercerized cotton, alkali treated cotton, hemp, sisal, jute and flax) and fibers, yarns and textile materials comprising polyamide or polyester modified to contain acid groups.
摘要:
Azo dyes of the formula ##SPC1##WhereX stands for the radical of a coupling component of the aminobenzene, hydroxybenzene, aminonaphthalene, hydroxynaphthalene or heterocyclic series or one with a coupling methylene group,A.sub.n .sup.- for an anion equivalent to K.sub.n .sup.+,n for 1 to 6,K.sup.+ for the group ##EQU1## and where the aromatic rings B and/or D may be further substituted. The dyes are useful for dyeing and printing paper (e.g., dyeing in the stock). The dyed paper is fast to light and wet treatments and has good fastness to bleaching, water, alcohol and light.
摘要翻译:式WHERE X的偶氮染料代表氨基苯,羟基苯,氨基萘,羟基萘或杂环系列的偶联组分或具有偶合亚甲基的偶联组分,An +相当于Kn +,N FOR 1至6,组+(CH 2 -K)n N ANGLE ANGLE CN = NX A n - (I),S和其中芳环B和/或D可进一步被取代的K +。 染料可用于染色和印刷纸(例如,在原料中染色)。 染色纸易于光亮和湿润处理,具有良好的漂白,水,酒精和光线牢度。
摘要:
A passive entry and/or passive go system and am associated operating method is provided. According to an embodiment of the invention, the following steps are performed in an electronic key of the passive entry and/or passive go system: generation of a reference input value, supplying the antenna circuit with the reference input value, measurement of the characteristic parameters, while the antenna circuit is supplied with the reference input value, storage of the characteristic parameters, measurement of a first output value of the antenna circuit, and determination of the field strength from the first output value and the characteristic parameters, whereby an effect of the characteristic parameters on the field strength is compensated. Use, for example, in motor vehicles.
摘要:
A method for obtaining field strength information from a received electromagnetic signal by a receiver unit, in which an input voltage is generated for an operational amplifier from the received signal in the receiver unit by an input resistance and an output voltage is generated by the operational amplifier by a fixed amplification factor. The input voltage is changed until the output voltage lies within a predefined interval that includes the value of the reference voltage, and hereby the input voltage is tapped at a divider node of a voltage divider and to adjust the output voltage to the reference voltage the gate voltage of the MOS transistor, operating within a nonlinear range, and connected to the divider node is changed in such a way that the forward resistance of the MOS transistor is changed substantially logarithmically and the field strength value received by the receiver unit is determined from a comparison of the value of the present gate voltage with the quantities assigned to the gate voltage values in a memory.
摘要:
Method and Circuit Arrangement for Field Strength Determination and Integrated Circuit is provided. In the method of the invention for determining the field strength of a carrier signal at an antenna of an antenna circuit of an electronic key, whereby the antenna circuit generates an output value, which is a function of the field strength and a function of characteristic parameters of the antenna circuit, comprises the steps: generation of a reference input value, supplying the antenna circuit with the reference input value, measurement of the characteristic parameters, while the antenna circuit is supplied with the reference input value, storage of the characteristic parameters, measurement of a first output value of the antenna circuit, and determination of the field strength from the first output value and the characteristic parameters, whereby an effect of the characteristic parameters on the field strength is compensated. Use, for example, in motor vehicles.
摘要:
To enlarge the design and technical use options of a vehicle lamp, in particular for motor vehicles, which includes at least one functional lamp and a light exit cover covering the internal space of the vehicle lamp, provided on surface regions of at least one component (1) of the vehicle lamp, which are visible from the exterior and which do not cover the at least one functional lamp, is an electroluminescence arrangement which includes at least one flat capacitor (20) which includes at least a rear base electrode (25), a pigment layer (27) which in operation lights up, and a transparent cover electrode (26).