Abstract:
A solar cell with improved efficiency is provided with a convoluted PN junction whereby a higher proportion of carriers produced by exposure of the solar cell to a source of radiation will be collected by the PN junction rather than being lost by recombination and the solar cell has an increased resistance to radiation damage.
Abstract:
The present disclosure provides a novel integrator circuit including an operational amplifier having first and second input terminals, said first input terminal being adapted for connection to a voltage source and including a resistor between said source and terminal. A first negative feedback loop including a capacitor is electrically connected between the output of the amplifier and the first terminal. A second positive frequency independent feedback loop is electrically connected between the output of the amplifier and the second input terminal. The second feedback loop preferably includes a voltage divider having a temperature variable resistor and a pair of independent heaters for varying the resistance of said resistor. The low frequency oscillator includes a pair of the novel integrator circuits and a resistive inverter circuit electrically connected together in cascade having ganged gain control following each integrator.