Data Acquisition System Ii


Posted on Jan 26, 2013

In this circuit, an HA-4900 series comparator is used in conjunction with a D/A converter to form a simple, vers


Data Acquisition System Ii
Click here to download the full size of the above Circuit.

atile, multichannel analog input for a data acquisition system. The processor first sends an address to the D/A, then the processor reads the digital word generated by the comparator outputs, lb perform a simple comparison, the processor sets the D/A to a given reference level, then examines one or more comparator outputs to determine if the inputs are above or below the reference. A window comparison consists of two such cycles with two reference levels set by the D/A. One way to digitize the inputs would be for the processor to increment the D/A in steps. The D/A address, as each comparator switches, is the digitized level of the input. While stairstepping, the D/A is slower than successive approximation; all channels are digitized during one staircase ramp.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Simple voltage controlled oscillator
Sine- And Square-Wave Ttl Oscillator
4046 PLL bassed A roulette wheel electronic circuit with explanation
Magnetic Proximity Switch Circuit
triac Optotriac doesnt turn off
50hz accurate oscillator circuit
simple intercom circuit with
vehicle tracking
Hall Effect Sensor Circuit
Storage Battery Exerciser
Medical ultrasonic atomizer 1
Zhichuan Electronic Circuit
Nightlight lighting circuits



Top