Electricity: power supply or regulation systems – External or operator controlled – Using an impedance as the final control device
Patent
1989-05-23
1990-03-27
Beha, Jr., William H.
Electricity: power supply or regulation systems
External or operator controlled
Using an impedance as the final control device
333 81R, G05F 300
Patent
active
049123947
ABSTRACT:
An attenuator circuit is provided which comprises an input node, a first resistor connected at one terminal to a reference potential, a second resistor connected to the other terminal of the first resistor, a first output node which is a connection node of the first resistor and the second resistor, a third resistor connected in parallel with the series circuit of the first and second resistors and being of such a type that a resultant resistive value of the first, second and third resistors is equal to a resistive value of the first resistor, a fourth resistor connected at one terminal to a connection node of the second and third resistors and having a resistive value substantially equal to that of the second resistor, and at least one combination resistor of a ladder configuration connected between the other terminal of the fourth resistor and the input node and having a third output node as a junction of its series circuit portion.
REFERENCES:
patent: 1912719 (1933-06-01), Nicolas
patent: 4238724 (1980-12-01), Klaus
patent: 4280089 (1981-07-01), Van De Plassche et al.
Mafune Hiromi
Sugimoto Yasuhiro
Beha Jr. William H.
Kabushiki Kaisha Toshiba
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