Square root circuit with stable linear cut-off

Details Square root circuit with stable linear cut-off Square root circuit with stable linear cut-off

1982-11-12

1985-03-19

Miller, Stanley, D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307491, 307501, 328144, G06G 712, G06G 720

Patent

active

045061742

ABSTRACT:
A square root circuit is provided with a high gain amplifier for receiving the input and a squaring circuit in the negative feedback circuit of the amplifier to produce the desired square root output. A second negative feedback path is provided with a feedback resistor and switching means for selectively completing the connection of the second feedback path when the amplifier input falls below a certain predetermined level so that the amplifier provides a linear response in the low input region. This linear response will make the accurate setting of the zero possible without any manual switching in the amplifier feedback.

REFERENCES:
patent: 3633044 (1972-01-01), Buckstad
patent: 3663833 (1972-05-01), Pao et al.
patent: 3942036 (1976-03-01), Burckhardt et al.
patent: 4198675 (1980-04-01), Moore

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