公开(公告)号：US4225797A

公开(公告)日：1980-09-30

申请号：US912133

申请日：1978-06-02

申请人： Paul B. Fredrickson

发明人： Paul B. Fredrickson

IPC分类号： G01T1/24 ,  H03K3/284 ,  H03K3/00

CPC分类号： G01T1/24 ,  H03K3/284

摘要： A pulse generator circuit triggerable by a pulse of nuclear radiation. The pulse generator circuit includes a pair of transistors arranged, together with other electrical components, in the topology of a standard monostable multivibrator circuit. The circuit differs most significantly from a standard monostable multivibrator circuit in that the circuit is adapted to be triggered by a pulse of nuclear radiation rather than electrically and the transistors have substantially different sensitivities to radiation, due to different physical and electrical characteristics and parameters.One of the transistors is employed principally as a radiation detector and is in a normally non-conducting state and the other transistor is normally in a conducting state. When the circuit is exposed to a pulse of nuclear radiation, currents are induced in the collector-base junctions of both transistors but, due to the different radiation sensitivities of the transistors, the current induced in the collector-base junction of the radiation-detecting transistor is substantially greater than that induced in the collector-base junction of the other transistor. The pulse of radiation causes the radiation-detecting transistor to operate in its conducting state, causing the other transistor to operate in its non-conducting state. As the radiation-detecting transistor operates in its conducting state, an output signal is produced at an output terminal connected to the radiation-detecting transistor indicating the presence of a predetermined intensity of nuclear radiation.

摘要翻译： 脉冲发生器电路可由核辐射脉冲触发。 脉冲发生器电路包括与标准单稳态多谐振荡器电路的拓扑结构中的其它电气部件一起布置的一对晶体管。 该电路与标准单稳态多谐振荡器电路的差异最大，因为电路适合于由核辐射脉冲而不是电气触发，并且由于不同的物理和电气特性和参数，晶体管对辐射具有实质上不同的灵敏度。 晶体管中的一个主要用作辐射检测器，并且处于正常非导通状态，另一晶体管通常处于导通状态。 当电路暴露于核辐射脉冲时，在两个晶体管的集电极 - 基极结中感应出电流，但是由于晶体管的辐射灵敏度不同，在辐射检测的集电极 - 基极结中感应出的电流 晶体管基本上大于在另一个晶体管的集电极 - 基极结中感应的晶体管。 辐射脉冲使辐射检测晶体管工作在其导通状态，导致另一晶体管工作在其不导通状态。 当辐射检测晶体管工作在其导通状态时，在连接到放射线检测晶体管的输出端产生指示存在预定的核辐射强度的输出信号。