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US 4,309,623 AGranted
Power source device for electronic counting system
AssigneeOmron Tateisi Electronics Co.
InventorsKatsumi Iwatani, Takeo Ohashi
Life of this patent
Estimating the term…
Abstract
A power source device for electronic counting systems comprising an a.c. power source, a first d.c. power circuit connected to the a.c. power source for supplying an object detecting device with a d.c. power, a second d.c. power circuit connected to the a.c. power source for supplying a counter with a d.c. power, the rate of discharge of the first d.c. power circuit being less than that of the second d.c. power circuit so as to prevent the counter from receiving signal from the detecting device during power failure of the a.c. power source.
Claims6
A power source device comprising
- a a.c. power supplying means,
- a first d.c. power circuit means having a first predetermined rate of power discharge connected to said a.c. power supplying means for supplying an object detecting device with a d.c. power,
- a second d.c. power circuit means having a second predetermined rate of power discharge connected to said a.c. power supplying means for supplying an electronic counting device with a d.c. power,
- said detecting device being adapted to supply said electronic counting device with input trigger pulses thereto,
- said first d.c. power circuit means having a rate of discharge less than that of said second d.c. power circuit means,
- so that the voltage of said second d.c. power circuit means during a failure of said a.c. power supplying means will be decreased to such a level that said counting device will not accept an input signal for counting if said detecting device generates an erroneous pulse during said a.c. power supplying means failure.
3 more elements
Dependencies are inferred from the claim text.