Broadband voltmeter

Details Broadband voltmeter Broadband voltmeter

1978-07-20

1981-03-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonlinear

324115, 324119, 328144, 364573, G01R 1510, G01R 1508

Patent

active

042557062

ABSTRACT:
A voltmeter comprising a diode detector, a square root converter and a linear amplifier each connected to receive the diode detector output signal, a resistance network connected to receive the outputs of the square root converter and the linear amplifier, means for selectively switching the resistances of the resistance network to change the proportion at the resistance network output between the signal from the square root converter and the signal from the linear amplifier to inversely match the response curve of the diode detector, and means for displaying the amplitude value of the resistance network output signal.

REFERENCES:
patent: 3652934 (1972-03-01), Paljug et al.
patent: 3657649 (1972-04-01), Odorici
patent: 3752905 (1973-08-01), Schneider
Schematic of Ballantine Model 340 RF Millivoltmeter; Ballantine Laboratories, Inc.; Boonton, N.J.
Schematic of Boonton Model 92 A RF Millivoltmeter; Boonton Electronics Corp.
Schematic of Model MV-928A RF Millivoltmeter; Millivac Inst., Schenectady, N.Y.; 3-1969.

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