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Capacitance Meter:
This is a simple capacitance meter, which can measure capacitance value easy. There are some measurement methods for capacitance, at one time capacitance was measured with an impedance bridge
or a dip meter. Recently typical capacitance meters can measure capacitance and some additional characteristics from current vector by applying AC voltage to Cx. Some simple capacitance meter
use integration method that measuring transient response of R-C network. There are some construction kits based on this method. This project uses integration method. There are some merits
that result can be got as digital data directly because it bases measurement of time, accurate analog circuit is not required and using a microcontroller can do its calibration easy.
Therefore integration method is suitable for hand built capacitance meter with high reliability.... (added 10/05)
Ground Rules for High Speed Circuits: AN-214 Analog Devices Application Note (app note added 2/06) Layout and Wiring Are
Critical in Video Converter Circuits.
Grounding for Low-and-High-Frequency Circuits: AN-345 Analog Devices Application Notes (app note added 2/06) Know Your Ground
and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
High CMRR
Instrumentation Amp Works with Low Supply Voltages: 10/02/03 EDN Design Ideas / (added 1/05) Modern battery-cell voltages of 3 to 3.6V require circuits that offer efficient
low-voltage operation. This Design Idea proposes an ac-coupled instrumentation-amplifier design that features high CMRR (common-mode-rejection ratio), wide dc input-voltage tolerance, and a
first-order highpass characteristic....
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