| 摘要 |
An arrangement for decreasing the noise in tandem matrix access circuits which employ diodes to interconnect their primary and secondary sets of matrices. In particular, each rail circuit of the secondary matrix is coupled to its respective pair of rail circuits of the primary matrix by diodes which are oppositely poled with respect to one another. Connection of the rail circuits in this manner permits the nonselected rails of the secondary matrix to be coupled to ground through low impedances during selection of a particular rail of the matrix. As a result, leakage currents appearing in the nonselected rails are shunted to ground, thereby eliminating the noise effects of these currents in the matrix.
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