Resistance and capacitance measuring device

Details Resistance and capacitance measuring device Resistance and capacitance measuring device

1982-06-18

1984-09-25

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 60C, 324 62, 324158D, G01R 2700, G01R 2726, G01R 3126

Patent

active

044737963

ABSTRACT:
This circuit measures both the resistance and the capacitance of the parallel RC circuit that is the equivalent of any substantially non-inductive two-port device. Thus, the circuit can measure any resistance, capacitance, RC network, or diode, including photovoltaic diodes. The invention uses an operational amplifier, an audio A.C. oscillator and a voltage measuring device such as a digital RMS voltmeter. The resulting apparatus is small, inexpensive, accurate, and easy to operate. The resistance is measured with the audio oscillator set for a low frequency (such as 70 Hz); the capacitance is measured when the audio oscillator is set at a high frequency (such as 20 KHz). The resultant values can either be calculated using simple formulas or can be displayed directly using an analog or digital circuit.

REFERENCES:
Monticelli et al., "Op-Amp Circuit Measures . . . ", Electronics, Jul. 10, 1975, pp. 112-113.

Affiliated with

Also associated with

Rating

Resistance and capacitance measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Resistance and capacitance measuring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistance and capacitance measuring device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1771357