Digital Ampere Meter
Category: TC7107 ADC + 7-Segment Display
Designer: RANA MUHAMMAD ADNAN KHALIL
Notes
This circuit is designed and simulated in proteus 7.10. This is a very simple and useful circuit to convert analog current signal into digital current display in mA. 1. One IC TC7107 (ICL7107) does two function, one is analog to digital conversion (ADC) and second is display digital value directly to 7 segment (common anode). 2. TC7107 needs few resistors and few capacitors to perform its functionality. 3. TC7107 display 3 and a half digit, therefore the display range is limited to 199.9. 4. Also the current measuring range is 0V to 199.9mA with resolution of 0.1mA. 5. The calibration of display can be done by varying potentiometer RV1. 6. The input signal is in the form of voltage, when current flows through resistor R1 (1 ohm) some voltage will drop at this resistor according to ohm law V = I*R. 7. The resistor R1 is used as a shunt resistor to measure current in mA Application: 1. This circuit can be used as digital volt meter. 2. This circuit can also be used analog to digital converter. 3. This circuit can also be used to monitor feedback voltages. 4. This circuit can also be used as digital thermometer. 5. This circuit can also be used as digital ampere meter (0-200mA) Note: More amazing circuits are coming soon. If you want any circuit in this app then please rate us 5 star and write your demanded circuit in comments. We will try to make and upload for you.