Claims
- 1. A projected grenade simulator test circuit which comprises:
- diode means for indicating sufficiency of battery charge to operate said simulator circuit;
- direct current power means for supply voltage to said test circuit; momentary pushbutton switch means for momentarily electrically coupling said power means to said diode means;
- female jack means electrically coupled to said test circuit for receiving a test fire signal;
- relay means for applying said test fire signal to said simulator test circuit;
- input resistance means electrically coupled to said fire signal by said relay means for simulating a 1.2 ohm resistance of an actual grenade before firing; and
- optocoupler triac driver means electrically coupled through said relay means to said fire signal and through said pushbutton means to said power means for opening a path to ground for said incoming fire signal in approximately 3 millionseconds, thereby simulating the time required to open the circuit by an electric match of an actual grenade and for presenting an open circuit to ground before firing.
- 2. A projected grenade simulator test circuit as recited in claim 1 wherein diode means includes:
- a light emitting diode operatively electrically coupled to said power means through said pushbutton means; and
- a first current limiting resistor in series with a positive terminal of said power means.
- 3. A projected grenade simulator test circuit as recited in claim 2 wherein said power means includes a 9 volt direct current battery.
- 4. A projected grenade simulator test circuit as recited in claim 3 wherein said momentary pushbutton means includes a single pole double throw momentary pushbutton having a normally closed contact electrically connected to said triac driver means and to the negative terminal of said battery; and a normally open contact terminal electrically connected to a cathode terminal of said light emitting diode and to a normally open contact of said relay means.
- 5. A projected grenade test circuit as recited in claim 4 wherein said optocoupler triac driver means includes:
- a gallium-arsenide infrared diode having a cathode electrically coupled to the negative side of said battery through normally closed contacts of said relay means and to one side of said input resistance, and an anode electrically coupled to the positive terminal of said female jack means and the other side of said input resistance; and
- a second current limiting resistance electrically coupled in series with said anode terminal of said infrared diode and the positive terminal of said female jack means.
- 6. A projected grenade test circuit as recited in claim 5 wherein the triac driver means further includes an isolated triac member in operable proximity to said gallium-arsinide infrared diode in series with a normally closed contact of said momentary pushbutton means and said relay means.
- 7. A projected grenade test circuit as recited in claim 6 wherein the relay means further includes:
- a relay coil electrically coupled in series with said isolated triac and the positive side of said battery; and
- a normally closed relay switch in operable proximity to said relay coil, upon operation of said pushbutton, said relay switch breaking the circuit to ground through said isolated triac causing said relay coil to release and thereby reseting said simulator test circuit for the next fire pulse.
GOVERNMENTAL INTEREST
The invention described herein may be manufactured, used and licensed by or for the Government for Governmental purposes without the payment to us of any royalty thereon.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4776277 |
Fiedler et al. |
Oct 1988 |
|