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http://dx.doi.org/10.9766/KIMST.2022.25.5.545

Pyro Squib Circuit Design with Stable Constant Current Driving Method  

Soh, KyoungJae (The 3rd Missile Systems PMO, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.25, no.5, 2022 , pp. 545-551 More about this Journal
Abstract
We proposed a design method for constant current pyro squib circuit. The current method using N MOSFET for the stability problem has a weakness of the current change, requiring a new design. This paper identified the problem with conventional squib circuit where the current is reduced by 25 % when maximum resistance is 3 ohms. Thus, we proposed a stable constant current driving circuit using P MOSFET and PNP BJT. We confirmed stable constant circuit operation through simulations and measurements of the proposed circuit design where the current did not change until the resistance reached 3 ohms.
Keywords
Pyro; Constant Current Squib Circuit; P MOSFET; PNP BJT;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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