Current potential indicator

Claim 2

A current potential indicator especially suitable for weapons test systems, said indicator comprising: a test probe housing, a pair of electrical contacts carried by one end region of the housing, latch elements carried by said housing to secure the housing inside a selected test well, means connected with said latch elements for selective actuation thereof, an electrical bi-stable type minimum event indicator carried by said housing, an electrical bi-stable type threshold indicator carried by said housing, circuit means connected between said contacts and said minimum event indicator for providing a flow path of electrical energy from said contacts to said minimum event indicator when the electrical energy is at a predetermined minimum level to allow said minimum event indicator to be actuated solely from the electrical energy derived from the system to be tested, said circuit means also being connected between said contacts and said threshold indicator for providing a flow path of electrical energy from said contacts to said threshold indicator when the electrical energy is at a predetermined upper threshold level to allow said threshold indicator to be actuated solely from the electrical energy derived from the system to be tested, and load disconnect means for automatically disconnecting the circuit means after a selected time interval of electrical energy application.

Claim 3

ThE current potential indicator of claim 1 which further comprises: a constant current source means connected with said contacts, said threshold indicator, and said minimum event indicator for supply constant current in the circuit.

Claim 4

The current potential indicator of claim 2 in which said constant current source means comprises: a constant current transistor having its emitter and collector connected across said contacts; a resistor connected between said emitter and one of said contacts; resistor means connected across said contacts and with the base of said transistor.

Claim 5

The current potential indicator of claim 3 in which said circuit means connecting said contacts and said minimum event indicator comprises: a minimum event transistor having its emitter connected with one of said contacts, its collector connected with said minimum event indicator, which is connected with the other of said contacts, and the base of the transistor connected with resistance means connected between the front of said contacts and the collector of said constant current transistor.

Claim 6

The current potential indicator of claim 1 in said circuit means connected between said contacts and said threshold indicator comprises: a threshold transistor having its emitter connected with one of said contacts, its collector connected with said threshold indicator, which is connected with the other said contacts, and the base of the transistor connected with resistance means connected between the first of said contacts and the collector of said constant current transistor.

Claim 7

The current potential indicator of claim 5 in which the resistance means connected with the base of said threshold transistor is variable for selectivity of the quantity of energy that actuates said threshold indicator.

Claim 8

The current potential indicator of claim 1 wherein said load disconnect means comprises: control means for disconnecting said circuit means, capacitor means and resistor means for applying an electrical input to said control means, said capacitor means being adapted to begin charging after electrical energy from said contacts is applied thereto to cause said control means to electrically disconnect said circuit means at a time following the application of electrical energy to said capacitor means depending upon the R-C time constant of said capacitor means and said resistor means.

Claim 9

An electrical potential indicator especially suitable for weapons test systems comprising: a test probe housing, input means carried by said housing and adapted to be coupled electrically to a system to be tested, an electrical bi-stable indicator carried by said housing and which remains in one of its bi-stable states when electrical energy is removed, circuit means connected between said input means and said indicator for providing a flow path of electrical energy from said input means to said indicator when the electrical energy at said input means is at a predetermined level to allow said indicator to be actuated solely from the electrical energy derived from the system to be tested, and load disconnect means for disconnecting the circuit means after a selected time interval of electrical energy application, said load disconnect means comprising: control means for disconnecting said circuit means, capacitor means and resistor means for applying an electrical input to said control means, said capacitor means being adapted to begin charging after electrical energy from said input means is applied thereto to cause said control means to electrically disconnect said circuit means at a time following the application of electrical energy to said capacitor means depending upon the R-C time constant of said capacitor means and said resistor means. 9 A current potential indicator especially suitable for weapons test systems, said indicator comprising: a test probe housing, a pair of electrical contacts carried by one end rEgion of the housing, latch elements carried by said housing to secure the housing inside a selected test well, means connected with said latch element for selective actuation thereof, an electrical bi-stable type minimum event indicator carried by said housing, an electrical bi-stable type threshold indicator carried by said housing, means coupled between said contacts and said minimum event indicator for providing a flow path of electrical energy from said contacts to said minimum event indicator when the electrical energy is at a predetermined minimum level to allow said minimum event indicator to be actuated solely from the electrical energy derived from the system to be tested, means coupled between said contacts and said threshold indicator for providing a flow path of electrical energy from said contacts to said threshold indicator when the electrical energy is at a predetermined upper threshold level to allow said threshold indicator to be actuated solely from the electrical energy derived from the system to be tested, transistor means coupled to each of said indicators for controlling the flow of electrical energy to said indicators, a generally constant current source means including an input transistor coupled to said contacts which becomes conductive when the input thereto is above a given level, a control transistor coupled to the output of said input transistor and to said transistor means for allowing the flow of electrical energy to said transistor means when said control transistor is rendered conductive by the output of said input transistor, an R-C circuit including capacitor and resistor means coupled to the output of said input transistor, and means coupled to said R-C circuit for rendering said control transistor nonconductive after a predetermined time interval after said input transistor becomes conductive dependent upon the R-C time constant of said capacitor means and said resistor means.

Claim 10

An electrical potential indicator especially suitable for weapons test systems comprising: a test probe housing, input means carried by said housing and adapted to be coupled electrically to a system to be tested, an electrical bi-stable indicator carried by said housing and which remains in one of its bi-stable states when electrical energy is removed, circuit means connected between said input means and said indicator for providing a flow path of electrical energy from said input means to said indicator when the electrical energy at said input means is at a predetermined level to allow said indicator to be actuated solely from the electrical energy derived from the system to be tested, and load disconnect means for disconnecting the circuit means after a selected time interval of electrical energy application, said load disconnect means comprising: control means for disconnecting said circuit means, capacitor means and resistor means for applying an electrical input to said control means, said capacitor means being adapted to begin charging after electrical energy from said input means is applied thereto to cause said control means to electrically disconnect said circuit means at a time following the application of electrical energy to said capacitor means depending upon the R-C time constant of said capacitor means and said resistor means. 9 A current potential indicator especially suitable for weapons test systems, said indicator comprising: a test probe housing, a pair of electrical contacts carried by one end rEgion of the housing, latch elements carried by said housing to secure the housing inside a selected test well, means connected with said latch element for selective actuation thereof, an electrical bi-stable type minimum event indicator carried by said housing, an electrical bi-stable type threshold indicator carried by said housing, means coupled between said contacts and said minimum event indicator for providing a flow path of electrical energy from said contacts to said minimum event indicator when the electrical energy is at a predetermined minimum level to allow said minimum event indicator to be actuated solely from the electrical energy derived from the system to be tested, means coupled between said contacts and said threshold indicator for providing a flow path of electrical energy from said contacts to said threshold indicator when the electrical energy is at a predetermined upper threshold level to allow said threshold indicator to be actuated solely from the electrical energy derived from the system to be tested, transistor means coupled to each of said indicators for controlling the flow of electrical energy to said indicators, a generally constant current source means including an input transistor coupled to said contacts which becomes conductive when the input thereto is above a given level, a control transistor coupled to the output of said input transistor and to said transistor means for allowing the flow of electrical energy to said transistor means when said control transistor is rendered conductive by the output of said input transistor, an R-C circuit including capacitor and resistor means coupled to the output of said input transistor, and means coupled to said R-C circuit for rendering said control transistor nonconductive after a predetermined time interval after said input transistor becomes conductive dependent upon the R-C time constant of said capacitor means and said resistor means.

Claim 11

An electrical potential indicator especially suitable for weapons test systems comprising: a test probe housing, input means carried by said housing and adapted to be coupled electrically to a system to be tested, an electrical bi-stable indicator carried by said housing and which remains in one of its bi-stable states when electrical energy is removed, means coupled between said input means and said indicator for providing a flow path of electrical energy from said input means to said indicator when the electrical energy at said input means is at a predetermined level to allow said indicator to be actuated solely from the electrical energy derived from the system to be tested, transistor means coupled to said indicator for controlling the flow of electrical energy to said indicator, a generally constant current source means including an input transistor coupled to said input means which becomes conductive when the input thereto is above a given level, a control transistor coupled to the output of said input transistor and to said transistor means for allowing the flow of electrical energy to said transistor means when said control transistor is rendered conductive by the output of said input transistor, an R-C circuit including capacitor and resistor means coupled to the output of said input transistor, and means coupled to said R-C circuit for rendering said control transistor nonconductive after a predetermined time interval after said input transistor becomes conductive dependent upon the R-C time constant of said capacitor means and said resistor means.

Claim 12

An electrical potential indicator especially suitable for weapons test systems comprising: a test probe housing, input means carried by said housing and adapted to be coupled electrically to a system to be tested, an electrical bi-stable indicator carried by said housing and which remains in one of its bi-stable states when electrical energy is removed, means coupled between said input means and said indicator for providing a flow path of electrical energy from said input means to said indicator when the electrical energy at said input means is at a predetermined level to allow said indicator to be actuated solely from the electrical energy derived from the system to be tested, transistor means coupled to said indicator for controlling the flow of electrical energy to said indicator, a generally constant current source means including an input transistor coupled to said input means which becomes conductive when the input thereto is above a given level, a control transistor coupled to the output of said input transistor and to said transistor means for allowing the flow of electrical energy to said transistor means when said control transistor is rendered conductive by the output of said input transistor, an R-C circuit including capacitor and resistor means coupled to the output of said input transistor, and means coupled to said R-C circuit for rendering said control transistor nonconductive after a predetermined time interval after said input transistor becomes conductive dependent upon the R-C time constant of said capacitor means and said resistor means.