Portable watch with radiation monitor

A portable watch comprising:

• a case;
• a power supply in the case;
• a micro controller in the case connected to the power supply for receiving power therefrom;
• a timekeeping and time indicating unit in the case connected to the micro controller for operation thereby;
• a Geiger-Muller counter in the case for detecting radiation and for delivering corresponding signals to the micro controller for calculation of an effective radiation dose rate;
• a voltage pulse converter connected between the micro controller and the Geiger-Muller counter for transforming a low voltage from the micro controller into a constant high voltage for transmission to the Geiger-Muller counter, wherein the voltage pulse converter is controlled by the micro controller using a first MOSFET switch;
• a second MOSFET switch controlled by the micro controller and connected to the Geiger-Muller counter for forcing the Geiger-Muller counter to turn off;
• a threshold device connected to the micro controller and to the voltage pulse converter to control the constant high voltage, the threshold device receiving a control input at a first bipolar transistor;
• and
• a pulse former connected to and between the Geiger-Muller counter and the micro controller for converting impulses from the Geiger-Muller counter into predetermined shapes for processing in the micro controller, the pulse former including a second bipolar transistor whose output is connected to the micro controller.

A portable watch comprising:

• a watch case enclosing a power supply, a micro controller receiving power from the power supply, and a timekeeping unit controlled by the micro controller;
• a Geiger-Muller counter in the watch case, the Geiger-Muller counter being connected to the micro controller for calculation of an effective radiation dose rate;
• a voltage pulse converter connected between the micro controller and the Geiger-Muller counter for transforming a low voltage from the micro controller into a constant high voltage supplied to the Geiger-Muller counter, wherein the voltage pulse converter is controlled by the micro controller using a first switch;
• a second switch controlled by the micro controller and connected to the Geiger-Muller counter for forcing the Geiger-Muller counter to turn off;
• a threshold device connected to the micro controller and to the voltage pulse converter to control the constant high voltage, the threshold device receiving a control input at a first transistor;
• a pulse former connected between the Geiger-Muller counter and the micro controller for converting impulses from the Geiger-Muller counter, the pulse former including a second transistor whose output is connected to the micro controller;
• and
• a rectifier connected between the pulse former and the cathode of the Geiger-Muller counter.

A portable watch comprising:

• a watch case enclosing a power supply, a micro controller receiving power from the power supply, and a timekeeping unit connected to the micro controller and controlled by the micro controller;
• a Geiger-Muller counter in the watch case, the Geiger-Muller counter being connected to the micro controller for calculation of an effective radiation dose rate;
• a voltage pulse converter connected between the micro controller and an anode of the Geiger-Muller counter for transforming a low voltage from the micro controller into a constant high voltage supplied to the Geiger-Muller counter, wherein the voltage pulse converter is controlled by the micro controller using a first switch;
• a second switch controlled by the micro controller and connected to a cathode of the Geiger-Muller counter;
• a threshold device connected to the micro controller and to the voltage pulse converter to control the constant high voltage, the threshold device receiving a control input at a first transistor;
• a pulse former connected between the Geiger-Muller counter and the micro controller for converting impulses from the Geiger-Muller counter;
• and
• the voltage pulse converter including a first rectifier connected between the pulse former and the anode of the Geiger-Muller counter,
• wherein the pulse converter includes a transformer having a primary winding connected to the micro controller and a secondary winding connected to a cathode of the Geiger-Muller counter through a second rectifier.