ROBERT JAMES HENDERSON
Pilots at 97 Dr, Everett, WA
License number
Washington A5030086
Issued Date
Oct 2015
Expiration Date
Oct 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
6020 97Th Dr NE, Everett, WA 98258
Professional information
Alternating Current Amplifier With Digitally Controlled Frequency Response
US Patent:
4868516, Sep 19, 1989
Filed:
Apr 14, 1988
Appl. No.:
7/182564
Inventors:
Robert M. Henderson - Everett WA
Leslie L. Szepesi - Everett WA
Leslie L. Szepesi - Everett WA
Assignee:
John Fluke Mfg. Co., Inc. - Everett WA
International Classification:
H03F 134
US Classification:
330 86
Abstract:
An improved alternating current amplifier employs capacitive feedback to balance the intrinsic input capacitance, and a multiplier circuit responsive to a digital control signal coupled in the feedback path to vary the effective capacitance of the capacitive feedback. Thus, the frequency response of the amplifier may be adjusted and set digitally, such as under computer control, obviating the need to make manual adjustments to improve amplifier performance.