The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a simple method based on commercially available operation amplifiers (Opamps) for realizing the square-rooting voltage-to-frequency converter (VFC). The realization of square-root function is provided through the use of the opamp supply-current sensing, which utilizes an inherent quadratic characteristic of the opamp class-AB output state. Experimental results verifying the performances...
This paper presents a simple circuit technique based on commercially available devices to implement voltage-controlled oscillator (VCO) with two high-impedance input terminals. By suitably setting two input signals, a linear frequency-voltage relation of the proposed VCO can be either positive or negative slope in the same scheme without any adapting configuration. The oscillation gain can be easily...
In this work, we report a SU-8-based fully integrated miniaturized inductively powered LC transponder for generic implantable wireless sensor applications. It consists of a 1 mm diameter octagonal spiral inductor and a micro fabricated MIM (metal insulator metal) capacitor. Polyvinylidene Fluoride-Trifluoroethylene (PVDF-TrFE) copolymer is applied as a dielectric material for the capacitor fabrication...
We describe here the design and electrical model of a resistive-capacitive voltage divider for very wide bandwidth high voltage measurements. The divider smoothly transitions from a resistive topology at low frequencies to a capacitive topology at high frequencies, giving it a very flat attenuation curve from DC to a 3dB point at 1.0 GHz. The design is novel, employing a combination of distributed...
Many national standards have requirements about the maximum value of residual voltage for electrical equipments, it requires to measure residual voltage accurately, the human body may have a certain degree of security risk if the measured value is lower than the truth value of residual voltage, but if the measured value is higher than the truth value, it may reduces the production pass rate of electrical...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.