High power and high voltage transistor control circuit

A transistorized circuit for controlling the flow of electrical current through a high voltage source capable of being tapped at lower voltages, comprising

• a plurality of series connected transistor arrays,
• means for providing a connection between each of said arrays and a tap on the voltage source such that the maximum voltage across each array is less than the critical voltage of the transistors within said array,
• means for sensing the current through said voltage source and for providing a control signal to one of said arrays to control the current therethrough, and
• means sensing the current flow through said connection means for controlling the current through the other arrays such that the current in said connection means approaches zero thereby causing the current flow through each array to be essentially equal.

A transistorized circuit for controlling the flow of electrical current through a high voltage battery capable of being tapped at lower voltages, comprising

• a pair of series connected transistor arrays, each provided with a plurality of parallel connected transistors,
• means for providing a connection between said arrays and a tap on the battery such that the maximum voltage across each array is less than the critical voltage of the transistors within said array,
• means for sensing the current through the battery and for providing a control signal to the transistors in one of said arrays to control the current therethrough, and
• means sensing the current flow through said connection means for controlling the current through the transistors in the other array such that the current in said connection means approaches zero thereby causing the current flow through each array to be essentially equal.