ICL7107 Digital Ammeter DIY Kit

The AMM-TE Ammeter offers fast response, high precision, clear display, intuitive readings, and excellent stability. It features an advanced circuit design with strong anti-interference capabilities, effectively suppressing high-frequency interference. The kit uses high-quality materials, has a refined design, an attractive appearance, and a long service life. It is easy to install and use, making it a reliable choice for users.

Parameters

• Kit Name: Ammeter Kit
• Model: AMM-TE
• PCB Size: 70.6 × 39 mm
• Panel Opening Size: 77 × 40 mm
• Display Window Size: 51 × 24 mm
• Operating Voltage: DC 5V
• Operating Current: 35 mA
• Measurement Accuracy: ±1 mA
• Measurement Range: 0~2A
• Overload Display: Displays “1” or “-1” on the first digit
• Display Color: Red

Assembly Steps

Before soldering, carefully read the instructions below. Some components must be installed in a specific order to ensure successful assembly.

1. Solder 2 five-band resistors (color code: red, black, black, brown, brown – both with the same resistance).
2. Solder 1 five-band resistor (color code: green, blue, black, red, brown).
3. Solder 1 five-band resistor (color code: brown, black, black, yellow, brown).
4. Solder 5 four-band resistors.
5. Solder 3 diodes of the same model (ensure correct orientation).
6. Solder 1 Zener diode (ensure correct orientation).
7. Solder 1 inductor (color code: red, red, red, silver).
8. Solder 3 ceramic capacitors.
9. Install the IC socket as shown in the diagram.
10. Install the first pin header in the red-framed area (ensure proper orientation).
11. Solder the first pin header and install 4 LED displays (ensure correct orientation).
12. After installing the LED displays, trim the excess leads.
13. Solder the second pin header (ensure proper orientation).
14. Solder 1 transistor and 1 voltage reference chip (ensure correct orientation and match the model).
15. Solder 2 CBB capacitors and 2 electrolytic capacitors (ensure correct orientation for electrolytic capacitors).
16. Solder 1 sampling resistor.
17. Solder 1 potentiometer and 1 polyester capacitor (ensure correct orientation for the potentiometer).
18. Solder the power socket and input socket (both with specific orientations).
19. Install the integrated circuit (IC) (pay attention to the direction).
    • Insert the power cable (with correct polarity).
    • Short-circuit the decimal point selection solder pads as needed.
20. Perform tests to verify correct operation after assembly.
21. Tighten the four screws to complete the kit assembly.