Direct current converter arrangement

Claim 1

A DIRECT CURRENT CONVERTER ARRANGEMENT FOR DERIVING A COMPARATIVELY HIGH DIRECT VOLTAGE, OUTPUT FROM A SOURCE OF COMPARATIVELY LOWER DIRECT VOLTAGE, COMPRISING, IN COMBINATION, A SOURCE OF DIRECT VOLTAGE OF PREDETERMINED MAGNITUDE; TRANSISTOR OSCILLATOR MEANS INCLUDING A STEP-UP TRANSFORMER HAVING A PRIMARY WINDING IN CIRCUIT WITH SAID SOURCE, A FEEDBACK WINDING, AND A SECONDARY WINDING, AND A MAIN TRANSISTOR HAVING THREE ELECTRODES, OF WHICH ONE IS CONNECTED TO SAID PRIMARY WINDING AND A SECOND ONE IS CONNECTED TO ONE END OF SAID FEEDBACK WINDING, AND A CONTROL TRANSISTOR MEANS HAVING A CONTROL ELECTRODE AND TWO OPERATIVE ELECTRODES, THE LATTER BEING CONNECTED BETWEEN THE THIRD ELECTRODE OF SAID MAIN TRANSISTOR AND THE OTHER END OF SAID FEEDBACK WINDING; A STORAGE CAPACITOR MEANS AND A FIRST DIODE MEANS SO CONNECTED IN SERIES WITH EACH OTHER BETWEEN ONE TERMINAL OF SAID SECONDARY WINDING AND ONE TERMINAL OF SAID SOURCE THAT SAID STORAGE CAPACITOR IS CHARGEABLE THEREBY TO A DESIRED OUTPUT VOLTAGE, THE TERMINALS OF SAID STORAGE CAPACITOR MEANS CONSTITUTING THE DIRECT VOLTAGE OUTPUT TERMINALS OF THE CONVERTER ARRANGEMENT; VOLTAGE DIVIDER MEANS CONNECTED IN PARALLEL WITH SAID STORAGE CAPACITOR MEANS AND HAVING AN INTERMEDIATE TAPPING POINT; GLOW LAMP MEANS IGNITABLE WHEN SAID STORAGE CAPACITOR MEANS IS CHARGED TO SAID DESIRED OUTPUT VOLTAGE, ONE ELECTRODE OF SAID GLOW LAMP MEANS BEING CONNECTED TO SAID TAPPING POINT OF SAID VOLTAGE DIVIDER MEANS, THE OTHER ELECTRODES OF SAID GLOW LAMP MEANS BEING CONNECTED TO SAID CONTROL ELECTRODE OF SAID CONTROL TRANSISTOR MEANS SO THAT SAID CONTROL TRANSISTOR MEANS CAUSES THE OSCILLATION OF SAID OSCILLATOR MEANS TO STOP WHEN SAID GLOW LAMP MEANS IS IGNITED AND TO START WHEN SAID GLOW LAMP MEANS IS EXTINGUISHED; AND A SERIES-COMBINATION OF A SECOND DIODE MEANS AND AN IMPULSE CAPACITOR MEANS CONNECTED BETWEEN SAID TAPPING POINT OF SAID VOLTAGE DIVIDER MEANS AND ONE OF SAID OPERATIVE ELECTRODES OF SAID CONTROL TRANSISTOR MEANS, SAID SECOND DIODE MEANS BEING ARRANGED WITH SUCH POLARITY THAT SAID IMPULSE CAPACITOR MEANS IS CHARGED VIA THE REVERSE RESISTANCE OF SAID SECOND DIODE MEANS WHEN THE POTENTIAL AT SAID TAPPING POINT DROPS BELOW A PREDETERMINED VALUE, AND THAT IT IS DISCHARGED VIA THE FORWARD RESISTANCE OF SAID SECOND DIODE MEANS WHEN THE POTENTIAL AT SAID TAPPING POINT EXCEEDS A PREDETERMINED VALUE.