Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural ranges – scales or registration rates
Patent
1991-12-13
1992-10-06
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural ranges, scales or registration rates
324 99D, 324114, 324116, 324157, G01R 1508
Patent
active
051535114
ABSTRACT:
A test lead socket indicating device is used for a volt-ohm-milliammeter (VOM) having a select input which is operable to set the VOM in a voltage, current or resistance measuring mode, a common input socket, a voltage socket, a resistance socket and a current socket. The test lead socket indicating device includes an indicator unit provided on the VOM and having a voltage indicator lamp disposed adjacent to the voltage socket, a current indicator lamp disposed adjacent to the current socket and a resistance indicator lamp disposed adjacent to the resistance socket. A counter unit has an input terminal connected to the select input. The counter unit has a digital signal output which is incremented each time the select input is operated. A decoder unit receives the digital signal output from the counter unit. The decoder unit activates one of the voltage, current and resistance indicator lamps according to the digital signal output. The voltage, current and resistance indicator lamps indicate to which one among the voltage, current and resistance sockets a test lead should be connected.
REFERENCES:
patent: 4525706 (1985-06-01), Nishikawa et al.
patent: 4604569 (1986-08-01), Tedd et al.
patent: 4727310 (1988-02-01), Hashimoto et al.
patent: 4748404 (1988-05-01), Heinze et al.
LandOfFree
Test lead socket indicating device for a volt-ohm-milliameter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Test lead socket indicating device for a volt-ohm-milliameter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test lead socket indicating device for a volt-ohm-milliameter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1191952