Abstract: A battery safety monitor system. The system includes at least one battery, at least one zener diode, at least one safety device, a microcontroller, a display device and a power supply. The at least one battery comprises at least one cell string capable of outputting voltage signals. The at least one zener diode is operatively coupled to the at least one battery cell string. The at least one safety device is operatively coupled to the at least one battery cell string. The microcontroller is operatively coupled to the at least one zener diode. The display device is operatively coupled to the microcontroller. The power supply is operatively coupled to the microcontroller and the display device.

Abstract: A camera controller incorporates a microcontroller for carrying out all controller functions. The microcontroller is operably coupled to a reprogrammable memory in which operating commands for the specific camera being used are stored. Thus the microcontroller can be configured to work with a great number of different cameras and command sets, based upon the specific camera being used. A memory that can be used for this purpose is an electrically erasable read only memory that, by using a programmable logic array and random access memory, can be reprogrammed in-place. The microcontroller is operably connected to a camera's “on/off”, zoom and focus functions so that these may be controlled via the controller. Also controlled by the invention is the automatic iris feature of a digital camera.

Abstract: A torpedo ejects lead weight at the conclusion of a practice run and is bed to the surface for recovery and reuse. A squib is initiated to release the weight by a control circuit which is actuated when the torpedo engine stops. An appropriately interconnected transistor and field effect transistor respond to built-up charges on three charge storage circuits to assure the proper initiation of the squib when the torpedo stops running. The stored energy thus is brought into effect to assure reliable separation and avoids the problems otherwise associated with conventional electromechanical relays.

Abstract: The invention is a safety circuit for torpedoes which causes lead weights be ejected when the torpedo is not running and is below a predetermined depth. It uses a CMOS multivibrator and NAND gates to pulse power to the existing pressure transducer and a comparator. This comparator checks depth and alternator power. When conditions are met, it holds power on and after five seconds, causes the weights to be dropped.The circuit is powered by existing batteries in the torpedo exercise head. To minimize any effect on the battery life, a strobbing technique is used where voltage is switched on for only a few milliseconds once every ten seconds. Depth is checked by the use of the comparator. One comparator input is connected to the torpedo's depth transducer and the other to a reference voltage in accordance with the predetermined depth limit. When the transducer voltage exceeds the reference voltage, the comparator turns on.One output from the comparator then latches-on for as long as the comparator is on.