Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-07-29
1995-03-14
Karlsen, Ernest F.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
3241581, G01R 3100
Patent
active
053979990
ABSTRACT:
In an evaluation apparatus for measuring the fluctuation of a voltage and a current on a power supply line and evaluating the result of the measurement, the apparatus includes: a dummy load connected to the power supply line instead of an actual function unit to measure the fluctuation of the voltage and the current on the power supply line; and a switch connected to the dummy load for turning ON/OFF the dummy load instead of performing an inserting/removing operation thereof. Further, the above switch can replace to a switching control circuit connected to the dummy load for continuously switching turning ON/OFF state of the dummy load instead of repeatedly performing an inserting/removing operation of the dummy load.
REFERENCES:
patent: 4357574 (1982-11-01), Takamisawa et al.
patent: 4926281 (1990-05-01), Murphy
Barnes, Brady, "Insert Boards Into A Live System Without Any Hitches-A Hot Backplane Can Easily Be Tamed By Implementing Some Simple, Practical Solutions," Electronic Design, May 11, 1989, pp. 75-80.
Karlsen Ernest F.
PFU Limited
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