Transistorized power supply with protective circuit incorporated therein

Claim 1

IN A TRANSISTORIZED POWER SUPPLY SYSTEM, A SOURCE OF ALTERNATING CURRENT POWER, RECTIFIER MEANS CONNECTED TO SAID SOURCE OF ALTERNATING CURRENT POWER TO CONVERT THE SAME TO DIRECT CURENT POWER, POTENTIOMETER MEANS FORMED OF AND ELONGATED RESISTOR AND AN ADJUSTABLE TAP THEREON, SAID RESISTOR BEING CONNECTED TO THE RECTIFIER MEANS ACROSS WHICH THE DIRECT CURRENT POWER IS APPLIED WHICH CAN BE ADJUSTED BY MOVEMENT OF THE TAP TO PROVIDE THE DESIRED VOLTAGE AT THE OUTPUT, AN OUTPUT CIRCUIT FOR SUPPLYING DIRECT CURRENT POWER TO A LOAD, TRANSISTORIZED CURRENT CONTROL MEANS CONNECTED IN SERIES BETWEEN THE OUTPUT CIRCUIT AND THE POTENTIOMETER MEANS TO CONTROL THE CURRENT FLOW IN THE OUTPUT CIRCUIT, TRANSISTOR REGULATING MEANS CONNECTED TO THE TAP ON THE POTENTIOMETER MEANS AND TO THE TRANSISTORIZED CURRENT CONTROL MEANS TO REGULATE THE FLOW OF CURRENT THERETHROUGH DEPENDING UPON THE POTENTIOMETER TAP SETTING AND PROTECTIVE MEANS INCLUDING FURTHER TRANSISTOR MEANS TO PROTECT THE TRANSISTORIZED CURRENT CONTROL MEANS, SAID PROTECTIVE MEANS BEING CONNECTED BETWEEN THE OUTPUT CIRCUIT AND THE TRANSISTOR REGULATING MEANS, SAID PROTECTIVE TRANSISTOR MEANS BEING NORMALLY NONCONDUCTIVE WHEN THE SYSTEM IS OPERATING PROPERLY TO SUPPLY DIRECT CURRENT OF THE PROPER POLARITY TO A LOAD BUT WHICH BECOMES CONDUCTIVE UPON THE APPLICATION OF IMPROPER POLARITY D.C. SOURCE TO THE OUTPUT CIRCUIT TO BIAS THE TRANSISTOR REGULATING MEANS TO CUT OFF CURRENT FLOW IN THE TRANSISTORIZED CURRENT CONTROL MEANS AS LONG AS THE IMPROPER POLARITY SOURCE IS CONNECTED TO THE OUTPUT CIRCUIT SO THAT THE TRANSISTORIZED CURRENT CONTROL MEANS WILL NOT BE OVERLOADED.