Ladder device with weighting factor adjusting means

Details Ladder device with weighting factor adjusting means Ladder device with weighting factor adjusting means

1978-03-13

1980-11-18

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307221D, 307264, H03L 100

Patent

active

042348072

ABSTRACT:
A ladder device comprising at least three ladder sections connected in cascade and weighting-factor adjusting means coupled to said ladder sections and which comprises first and second field effect transistors (FET) having channel regions with different predetermined length/width ratios that define a weighting factor coefficient. A further fine adjustment of the weighting factor is achieved by adjusting the gate voltages of the FETs.

REFERENCES:
patent: 3809923 (1974-05-01), Esser
patent: 3877056 (1975-04-01), Bailey
patent: 4034199 (1979-07-01), Lampe et al.

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