Current monitor circuits
US3967257A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Jan 7, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A visual indicator in parallel with a zener diode, positioned in series with a load is provided to monitor the presence of current flow in a circuit over a range of several orders of magnitude. In addition, a circuit arrangement is described to monitor the continuity and current flow in two separate parallel paths, feeding a common load in order to check the continuity of the circuitry and associated switching devices. For this purpose, a second current monitor, including a series switch, is placed in parallel with a first series arrangement of a current monitor and a switch. Alternate polarity arrangements of the respective zener diodes associated with the corresonding current monitors are illustrated to show the varing modes of operation contemplated by this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.