Sunday, March 19, 2017

Universal Battery Tester Circuit using TL072CD IC

Electronic Kit School. - There are many tester or instrumentation tool design to help people in electronic easy to know the characteristic of electronic component and tools. One tester designed is to measure or test battery easily look like in Figure 1 below.

The main component to controller this battery tester is TL072CD IC which popular today. In this time, beside we will show you the circuit, here we also will show you component part and global description about this circuit.


  1. R1, R3 = 5.6 Ω
  2. R2 = 3.3 KΩ
  3. R4, R6 = 1 MΩ
  4. R5, R7, R9 = 1 KΩ
  5. R8, R10 = 820 Ω
  6. R11 = 10 KΩ
  7. IC1 = TL072CD
  8. ZD1 = 3.3 V/500mW
  9. LED1 = RED LED
  10. LED2 = GREEN LED
  12. SW1 = Push to on switch
  13. Two probe

Circuit like in Figure 1 above show you about the Universal Battery Tester Circuit using TL072CD IC. From ElectronicProjects site describe that the entire circuit of universal battery tester is build around dual comparator IC TL072 (IC1) followed by other component. The two independent comparator is used here as operational amplifier. The inverting pin of these two operational amplifiers is fed through potential divider network made from resistor R1 and R3. Rest of the component is utilized to maintain threshold voltage.


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