EMC Protection of SCB Explosive Devices by Using SMD-Based NTC Thermistors

Chen, Fei; Zhou, Bin; Zhichun, Qin; Ren, Gang; Du, Pei-Kang

doi:10.1109/temc.2012.2202120

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The results show that the 50% firing power is 11.81 W and standard deviation is 0.41. Hence, extrapolate the no-fire power is 10.56 W and all-fire power is 13.07 W. According to [14], the all-fire power of conventional polysilicon SCB is 9.74 W. It demonstrates that the SJI has better RF safety than polysilicon SCB under this test condition.…”

Section: Rf Energy Injection Experimentsmentioning

confidence: 84%

Theoretical and Experimental Investigation of Semiconductor Junction Igniter

Zhou

Yong

Cao

et al. 2014

IEEE Trans. Plasma Sci.

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There have always been concerns for operation and service safety of electroexplosive devices (EEDs) in an electromagnetic environment. To discuss new EEDs, semiconductor junction igniter (SJI) with p-n junction is researched theoretically and experimentally in this paper. The theoretical analysis indicates that N-doped concentration is the key factor dominating SJI performances. In electroexplosive experiments, the SJIs are fired with a capacitor charged to 160 V. Results show that it goes through four stages during the electroexplosive process, and the highest temperature exceeds 6000 K. Meanwhile, function mechanisms have been analyzed. In the safety tests, none of the samples fired with a 25-kV electrostatic voltage, and the all-fire radio frequency (RF) input power is 13.07 W, which are both behavior better than that of the polysilicon igniters. Electrostatic and RF safety can be improved with SJI parameter adjustments.

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Section: Rf Energy Injection Experimentsmentioning

confidence: 84%

Theoretical and Experimental Investigation of Semiconductor Junction Igniter

Zhou

Yong

Cao

et al. 2014

IEEE Trans. Plasma Sci.

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“…The main purpose of the LCEID-integrated multiple functional modules is to realize intelligent control and high-security features. However, the initiation effect of the SCB chip under the excitation of the firing capacitor discharge pulse energy is practically the same [ 24 , 25 , 26 ].…”

Section: Experiments Results and Discussionmentioning

confidence: 99%

Design, Fabrication, and Characterization of a Laser-Controlled Explosion-Initiating Device with Integrated Safe-and-Arm, EMP-Resistant, and Fast-Acting Technology Based on Photovoltaic Power Converter

et al. 2022

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To augment the intelligence and safety of a rocket or ammunition engine start, an intelligent initiation system needs to be included in the data link. A laser-controlled intelligent initiation system with inherent safety and a laser-controlled explosion-initiating device (LCEID) incorporating electromagnetic pulse (EMP) resistant, safe-and-arms fast-acting modular device based on photovoltaic power converter technology is designed and fabricated in this work. LCEID is an integrated multi-function module consisting of the optical beam expander, GaAs photovoltaic (PV) array, safe-and-arms integrated circuit, and low-energy initiator. These components contribute to EMP resistance, fast-acting, safe-and-arm, and reliable firing, respectively. To achieve intelligent initiation, each LCEID has a unique “identification information” and a “broadcast address” embedded in integrated-circuit read-only memory (ROM), which is controlled by encoded laser addressing. The GaAs PV array was investigated to meet the low-energy initiator firing voltage requirements. Experimental results show that the open-circuit voltage, short-circuit current, and maximum power output of the four-junction GaAs PV array illuminated by a 5.5 W/cm2 laser beam were 220 mA, 21.5 V, and 3.70 W, respectively. When the voltage of the 22 μF energy storage capacitor exceeds 20 V, the laser charging time is found to be shorter than 2.5 s. Other aspects of LCEID, such as laser energy coupling efficiency, the firing process, and the energy-boosting mechanism, were explored. Measurements show that the coupling efficiency of the micro lens with a radius of curvature D = 20 μm and size of r = 50 μm reaches a maximum of 93.5%. Furthermore, for more than 18 V charge voltage, the LCEID is found to perform reliably. The fabricated LCEID demonstrated a high level of integration and intrinsic safety, as well as a finely tailored initiation performance that could be useful in military applications.

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“…This method controls the start-up inrush current by connecting an NTC (negative temperature coefficient) thermistor in series on the path [14]. In the start-up transient state, the inrush current is limited by the initial resistance of the NTC thermistor.…”

Section: Inrush Current Reduction Methods Using Relaymentioning

confidence: 99%

Robust Safety Circuits for DC Powered Home Appliances in Transient State

Ahn¹,

Kim²,

Lee³

2014

Journal of Electrical Engineering and Technology

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-In this paper, for the development of a safe and reliable DC home appliance suitable for DC home power supply system, we classified a number of inherent problems with help of the comparative analysis of existing AC and new DC home appliance. Several new technical problems of DC home appliances are mainly linked to the DC transient state. Among them, this paper concentrates on start-up inrush current problem, uni-polarity problem, and heavy DC load control problem. And to address these problems, we herein present an implementation of robust safety circuits for DC home appliances. Specifically, we investigate several multi-circuit countermeasures and select the best among them through comparative evaluation, based on theoretical, simulational, and experimental results.

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EMC Protection of SCB Explosive Devices by Using SMD-Based NTC Thermistors

Cited by 6 publications

References 4 publications

Theoretical and Experimental Investigation of Semiconductor Junction Igniter

Theoretical and Experimental Investigation of Semiconductor Junction Igniter

Design, Fabrication, and Characterization of a Laser-Controlled Explosion-Initiating Device with Integrated Safe-and-Arm, EMP-Resistant, and Fast-Acting Technology Based on Photovoltaic Power Converter

Robust Safety Circuits for DC Powered Home Appliances in Transient State

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