Abstract
A simple and easily installed modification is described which upon application of external pulses causes the undelayed opening of the gates in the signal processing modules of a Princeton Applied Research Model 162 boxcar integrator. This allows the timing for the aperture delays to be done externally with digital circuitry, thus simplifying the setting of time parameters in deep level transient spectroscopy (DLTS) measurements, as well as giving increased time accuracy, stability, and easier interfacing to a computer. A second circuit is also described which, when used with a modified 162, permits double correlation DLTS to be performed with one, instead of two, instruments.
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