Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With amplifier or space discharge device
Patent
1992-10-09
1994-08-23
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With amplifier or space discharge device
324123C, 324713, 330252, 330260, H03F 345
Patent
active
053410904
ABSTRACT:
A bidirectional, transconductance, DC amplifier exhibiting a compliance voltage exceeding either of the DC power supply voltages nearly double the compliance voltage of conventional circuits. The circuit uses a differential input operational amplifier. A voltage divider has its first resistor connected between the amplifier input and the noninverting input of the operational amplifier. The second resistor of the voltage divider is connected between the noninverting input and a common ground. A third resistor is connected between the amplifier input and the inverting input of the operational amplifier. A feedback circuit branch is connected between the inverting input and the output of the operational amplifier and includes a pair of output terminals for connecting the load in series in the feedback circuit branch.
REFERENCES:
patent: 3588530 (1971-06-01), Langan
patent: 4290024 (1981-09-01), Yokoyama
patent: 4390848 (1983-06-01), Blauschild
patent: 4495462 (1985-01-01), Weldon
patent: 4528514 (1985-07-01), Quackenbush
patent: 4689607 (1987-08-01), Robinson
patent: 4965529 (1990-10-01), Laug
patent: 5191297 (1993-03-01), Penman et al.
Chung et al; "A Linear Operational Transconductance Amplifier for Instrumentation Applications"; Jun. 1992; pp. 441-443.
Foster Frank H.
Scientific Columbus Co.
Tobin Christopher M.
Wieder Kenneth A.
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