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A man with one voltmeter knows his voltages. Perfectly. When, due to the pressures of circumstances, he acquires one more, he doesn't, any longer. Each meter will have ...
Apart from the MAX1498 chip and five seven segment common cathode displays, there isn't much to acquire. The other stuff needed can easily be pulled off any hard ...
The picture is the suggested circuit from the datasheet of the MAX1498. It is suggested that we do not get too creative with it. Maxim made it, so ...
The figure shows the pinout of the ic. Eight outputs for the seven segments and decimal point. Five outputs for the display cathodes. Five supply connections. Two inputs. ...
I printed out the pin diagram and drew the external connections in. Peak and hold inputs were held inactive. The internal reference was used. The decimal points were ...
The series of pictures show steps in connecting up all the segments of the five seven segment LED displays in parallel. Later, I disconnected all except A,B,C & ...
The circuit board to house the MAX1498 was made by etching with saltwater. The footprint of the ic was etched and the other components were mounted on lands ...
Finally, it works. In the pictures, it is displaying the voltage of a single dry cell and the display holds steady. As you can see, there is a ...
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