초록 ▼

Improved transmitter coil, improved fuze setter circuitry for adaptively tuning the fuze setter circuit for resonance and current difference circuitry for interpreting a fuze talkback message. The transmitter coil utilizes an "L" shaped coil cross section, with the wrapped coil portion being at righ

Improved transmitter coil, improved fuze setter circuitry for adaptively tuning the fuze setter circuit for resonance and current difference circuitry for interpreting a fuze talkback message. The transmitter coil utilizes an "L" shaped coil cross section, with the wrapped coil portion being at right angles to the return coil portion, in order to increase the coupling efficiency between the fuze setter coil and the fuze receiver coil, as compared to the prior art "C" coil. The inventive "L" shaped cross section also eliminates counter magnetic field due to the return coil portion being at right angles to the wrapped coil portion. The fuze setter includes circuitry for adaptively tuning the resonant LC circuit for resonance by adjusting the capacitance in the LC circuit to maximize current in the LC circuit. The fuze setter utilizes a switched capacitor network circuit to tune the LC circuit for resonance. The fuze circuitry modulates its impedance, which results in changes in the current in the resonant LC circuit of the fuze setter which are detected and interpreted by the fuze setter circuit.

대표청구항 ▼

[ What is claimed is as follows:] [1.] An improved transmitter coil for a programmable projectile fuze, comprising:a coil core formed of a winding which includes a wrapped coil portion and a return coil portion;the wrapped coil portion wrapping around a section of the circumference of a projectile a

[ What is claimed is as follows:] [1.] An improved transmitter coil for a programmable projectile fuze, comprising:a coil core formed of a winding which includes a wrapped coil portion and a return coil portion;the wrapped coil portion wrapping around a section of the circumference of a projectile adjacent a receiver coil contained inside the projectile, the wrapped coil portion having first and second ends, andthe return coil portion extending from the first end to the second end, the return coil portion being formed at 90.degree. to the wrapped coil portion,whereby the transmitter coil forms an "L" shaped cross section which eliminates counter magnetic field due to the return coil portion being at right angles to the wrapped coil portion.