Strobo device

A strobo device comprising a DC high voltage power supply, a main capacitor connected to both ends of the DC high voltage power supply, first series connection elements having the flash discharge tube, a plurality of first diodes and an insulate gate bipolar transistor connected in series, connected to both ends of the main capacitor, and forming a discharge passage of the main capacitor via the flash discharge tube, a plurality of second series connection elements having plurality of first control switch elements with control polarities and a plurality of second diodes connected in series one by one, respectively, and connected between each anode of the first diodes and a collector of the insulated gate bipolar transistor, plurality of step-up capacitors connected between each cathode of the first diodes and each anode of the second diodes, a charge means for charging a plurality of step-up capacitors so as to give a high potential to the terminal on the side connected to the cathode of the flash discharge tube, a gate means for actuating an on action of a plurality of the control switch elements in response to the flash start signals, a drive control means for turning on the insulated gate bipolar transistor by supplying an on voltage to the control polarity of the insulated gate bipolar transistor in response to the flash start signal and turn off the insulated gate bipolar transistor by stopping the supplying of the on voltage in response to the flash stop signal, and a trigger circuit by which the flash discharge tube is excited.

A strobo device comprising a DC high voltage power supply, a main capacitor connected to both ends of the DC high voltage power supply, first series connection elements consisting a flash discharge tube, a first diode and an insulated gate bipolar transistor connected in series, connected to both ends of the main capacitor, and forming a discharge passage of the main capacitor via the flash discharge tube, series element having a plurality of the third diodes connected in series and connected to both ends of the first diode, a plurality of the second series connection elements having a plurality of control switch elements with control polarities and a plurality of the second diodes one by one, respectively, connected in series, and connected between the anodes of the plurality of the third diodes and collector of the insulated gate bipolar transistor, respectively, a plurality of step-up capacitors connected between each cathode of the plurality of the third diodes and each anode of the plurality of the second diodes, a charge means for charging the plurality of the step-up capacitors so as to give a high potential to the terminal on the side connected to the cathode of the flash discharge tube, a gate means for actuating an on action of the plurality of the control switch elements in response to the flash start signal, a drive control means for turning on the insulated gate bipolar transistor by supplying on voltage to the control polarity of the insulated gate bipolar transistor in response to the flash start signal and turn off the insulated gate bipolar transistor by stopping the supplying of the on voltage in response to the flash stop signal, and a trigger circuit by which the flash discharge tube is excited.

A strobo device, comprising a DC high voltage power supply, a main capacitor which is connected to both ends of the DC high voltage power supply, first series connection elements having a flash discharge tube, a first diode and an insulated gate bipolar transistor connected in series, connected to both ends of the main capacitor and forming a discharge passage of the main capacitor via the flash discharge tube, second series connection elements having a first control switch element with a control polarity and a second diode connected in series and connected to both ends of series elements of the first diode and the insulated gate bipolar transistor, a step-up capacitor one end of the other end of which is connected to a collector of the insulated gate bipolar transistor via the second control switch element with a control polarity, a backflow prevent diode the anode of which is connected to the cathode of the flash discharge tube directly or indirectly and the cathode of which is connected to the other end of the step-up capacitor, a charge means for charging the step-up capacitor via the second diode so as to give a high potential to the terminal on the side connected to the cathode of the flash discharge tube via the backflow prevent diode, a switch control means which works in response to a flash start signal and actuates an on action of the first and the second control switch element, a drive control means for turning on the insulated gate bipolar transistor by supplying an on voltage to the control polarity of the insulated gate bipolar transistor in response to start of the DC high voltage power supply and turn off the insulated gate bipolar transistor by stopping supplying the on voltage in response to a flash stop signal, and a trigger circuit by which the flash discharge tube is excited.