Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1983-01-24
1985-11-12
Miska, Vit W.
Communications: electrical
Audible indication
Percussion-type sound producer
307571, H03K 1303
Patent
active
045531323
ABSTRACT:
A digital-to-analog converter includes a plurality of pairs of complementary conductivity field-effect transistors (FETs) coupled for applying reference potentials to a resistive ladder network in response to the bit values of an input digital word. A variable voltage generator develops gate biasing voltage for the FETs of one conductivity. The biasing voltage has a magnitude controlled in response to a bridge circuit including a further pair of complementary conductivity FETs also coupled to the reference potentials. As a result, the complementary conductivity FETs are automatically caused to exhibit matched conductivity characteristics.
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Dingwall Andrew G. F.
Zazzu Victor
Berard, Jr. C. A.
Miska Vit W.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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