7 segment Digital DC Voltmeter Circuit

7 segment Digital DC Voltmeter Circuit

The values ??of the elements relating to the area 200mV and 2V range, the values ??are different only for R2, C2 and R7. The area subject to 200mV value written in the first msetu, or the same as a typical scheme. The area is subject to 2V value written elsewhere. For R7 is considered to be the area of ??200mV instead of resistor inserted jumper wire. Displays which are used as the total anode, and having 10 connectors used and may SA52-11GWA or similar color as desired.

It is clear that there are not only two measuring zones, but it is possible to extend the measurement area with the corresponding series resistor at the input of the voltmeter. I recommend that the full scale of 200mV use only for use as a voltmeter, ammeter, for all other applications prefer to use a range of 2V, this is to be extended to 20V or 200V range area.

Display 3 1/2 digit, which means that the maximum display 1999 course with a decimal point is included if desired. Decimal point is connected through a resistor R8 to ground. It is also not necessary to use 4 Display, you can use them only 3 to see 999 or range 100mV, 1V, 10V, 100V.

Input connectors AND HI and IN LO may not be connected to a voltage that is outside the power value ICL7107. The circuit is the typical applications also vary according to the input part, because it is at the entrance of two resistors that protect the entrance from destruction in case of connection too high a voltage.

This schematic diagram come from circuit: Digital DC Voltmeter based ICL7107 Chip.
Go to that page to read the explanation about above circuit design.

In the electrical sector, a schematic diagram is usually used to describe the design or model of equipment. Schematic diagrams are usually utilized for the maintenance and repair of electronic and electromechanical devices / units. Original schematics were made by hand, using standardized templates or pre-printed adhesive symbols, but nowadays Electrical CAD computer software is often used.

In electronic design automation, until the 1980s schematics were virtually the only formal representation for circuits. More lately, using the progress of computer system technology, other representations were introduced and specialized computer languages were developed, because with the explosive development of the complexity of electronic circuits, classic schematics are getting less practical. As an example, hardware description languages are indispensable for contemporary digital circuit design.

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