Tool kit is one of learning media that have important role in engineering education, the author has been finished in developing tool kit with oscillator “LC circuit” topic. This oscillator can generate a sinusoidal wave with constant frequency and amplitude. With this tool kit wish the student can develop their skill and applicated in electrical, electronic, communication circuits and systems a...

A new converter using a switched-inductor cell integrated with a switched-capacitor cell within a boost-like structure is proposed. The converter can achieve a very high dc conversion ratio. It can serve as the front-end dc-dc converter for a fuel cell in a UPS system. The inductors and capacitors are switched in a parallel-series configuration. The charging circuit of the inductors from the so...

Modern Radio Frequency (RF) transceivers cannot be imagined without high-performance (Transmit/Receive) T/R switch. Available T/R switches suffer mainly due to the lack of good trade-off among the performance parameters, where high isolation and low insertion loss are very essential. In this study, a T/R switch with high isolation and low insertion loss performance has been designed by using Si...

There is few report of applying on-chip inductor to high-speed digital circuit, while it is useful passive element for RF circuit design. The on-chip inductor helps the digital circuit operate faster and can reduce the power consumption, because the inductance can cancel the capacitive load of the active device. In this manuscript, we present two conspicuous cases where on-chip inductor has bee...

In this paper, a novel high step-up DC-DC converter is proposed for sustainable energy system. The proposed converter uses coupled inductor and switched-capacitor technique. The capacitors are charged in parallel and are discharged in series by the coupled-inductor to achieve high stepup voltage gain with appropriate duty ratio. Besides, the voltage stress on the main switch are reduced with a ...

High efficiency DC-DC converters with high-voltage gain have been researched due to increasing demands. A soft-switching single-ended primary inductor converter (SEPIC) is presented in this work. An auxiliary switch and a clamp capacitor are presented in this project. A coupled inductor and an auxiliary inductor are utilized to obtain ripple-free input current and achieve zero voltage-switching...

This paper analyses and designs a kind of wireless power transmission system via near field resonant coupling. It introduces the wireless power transmission technology, and combination of traditional inductive coupling and resonance. The project consists of modeling and construction of the hardware to prove the feasibility of wireless power transmission using near field resonant coupling. The h...

Coupled inductors can effectively optimize the THD, loss, current ripple, and power density of multiphase interleaved totem-pole PFC converters. However, a coupled inductor will also worsen zero-crossing distortion process. This paper first introduces working principle converter with based on detailed analysis modes, then analyzes influence process caused by inductor. To eliminate inductor, an ...

A diode works for battery charging, as shown in Figure 1 . When we use an RF source excitation, the wiring inductance L matters. Let us consider how affects turn-on and -off operation. The voltage xmlns:xlink="htt...

Local cooling protects against TNF-alpha-induced injury by attenuating inflammation-associated microcirculatory dysfunction and leukocytic response. Mechanisms of protection, however, are not fully understood. We studied whether the metabolites of the HO and NOS pathway, exerting potent vasodilatory, antioxidant, and anti-apoptotic properties, are involved in tissue cryoprotection. In animals p...