Circuit Schematic Main Voltage Wireless Tester using CD4033

Eltronicschool. - Do you want to build your self the tester instrument in this time like to measure main voltage? when you want to build it, in here i will show you one of the tester circuit schematic for measuring or testing main voltage wirelessly look like in Figure 1 below.

The main of the heart of the circuit component is CMOS IC CD4033. So, in here we will show you more about this circuit schematic of Main Voltage Wireless Tester using CD4033, and we will give you the component parts, and description of this circuit.

Circuit Schematic

Figure 1. Circuit Schematic of Main Voltage Wireless Tester using CD4033 (Source: Circuitstoday)

Component Part

1. Seven segment
2. CD4033 IC
3. Resistors
4. Capacitors
5. Battery
6. Switch

Description

Circuit schematic like in Figure 1 above is named Main Voltage Wireless Tester using CD4033. The main component to build this circuit is CMOS IC CD4033 that we think it is easy found in the electronic component market in your country.

How it works

According Circuitstoday site that also published this circuit, describe that with this circuit you can test whether mains voltage is present or not without you having electric contact with mains line. As the main component, the CMOS IC CD4033 consists of a 5 stage decade Johnson counter and an output decoder for converting the Johnson code to a 7 segment decoded output for driving 7 segment LED display. A 10cm long insulated copper wire connected to the clock pin (pin1) of the IC serves as the sensor. The sensor wire has to be placed in the vicinity of the mains wire to be tested. When there is no voltage in the mains line, no voltage will be induced in the sensor wire and the display will show a random digit. When there is voltage in the mains line, a small voltage will be induced in the sensor wire due to electromagnetic induction and this voltage is sufficient enough to clock the CMOS IC CD4033. It will count from zero to nine repeatly in the display seven segment.

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Circuit Schematic Led display digital Voltmeter using CL7107

Eltronicschool. - Although in this time when we want to design and build electronic display for our project like for displaying voltmeter, speed, number, and others, we can design using LCD technology, but we also can design it using seven segment that we know before LCD.

In this time we will show you one circuit application for digital voltmeter displaying using seven segment based on CL7107 IC like in figure 1 below. In this circuit, CL7107 be used to drive 4 seven segment for displaying the number of voltmeter value.

Circuit Schematic

Figure 1. Led display digital Voltmeter Circuit 

(Source: Electroschematic)

Component List

1. R1 = 180k P1 = 20k trimmer multi turn
2. R2 = 22k U1 = ICL 7107
3. R3 = 12k LD1,2,3,4 = MAN 6960 common anode led displays
4. R4 = 1M  
5. R5 = 470k  
6. R6 = 560 Ohm  
7. C1 = 100pF  
8. C2, C6, C7 = 100nF  
9. C3 = 47nF  
10. C4 = 10nF  
11. C5 = 220nF

Description

Circuit schematic like in figure 1 above is Circuit Schematic Led display digital Voltmeter using CL7107. This is an easy to build, but nevertheless very accurate and useful digital voltmeter. It has been designed as a panel meter and can be used in DC power supplies or anywhere else it is necessary to have an accurate indication of the voltage present. The circuit employs the ADC (Analogue to Digital Converter) I.C. CL7107 made by INTERSIL. This IC incorporates in a 40 pin case all the circuitry necessary to convert an analogue signal to digital and can drive a series of four seven segment LED displays directly. The circuits built into the IC are an analogue to digital converter, a comparator, a clock, a decoder and a seven segment LED display driver. The circuit as it is described here can display any DC voltage in the range of 0-1999 Volts. 

For more description of Circuit Schematic Led display digital Voltmeter using CL7107, you can read more from the original article with click link here.

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