Circuit part:
- The ICL7107 is used as the core chip, which is responsible for converting the input analog voltage into a digital signal.
- The front end needs to set an appropriate voltage divider network to adapt to the voltage measurement of different ranges.
- Some filter capacitors are coordinated to stabilize the signal and remove clutter.
- Connect a digital tube or liquid crystal display to display the measured voltage value.
PCB design:
- Reasonably layout the ICL7107 and other related elements to make the signal transmission path as short and direct as possible.
- Provide good wiring for the power supply part to ensure stable power supply.
- Pay attention to the handling of the digital ground and the analog ground to reduce interference.
- Carry out appropriate shielding and protection for key signal lines.
The specific circuit schematic diagram and PCB wiring diagram will vary according to the actual design requirements and element selection. You can further study and optimize the design according to the specific situation.
The circuit mainly consists of the ICL7107 chip, resistors, capacitors, and a display. The input voltage is connected to the appropriate pins of the ICL7107 through a voltage divider network. The ICL7107 converts the analog voltage into a digital signal and drives the display to show the voltage value.
On the PCB layout, the components are carefully arranged to ensure good signal integrity and minimal interference. The power supply lines are routed properly to provide stable power to the circuit. The traces connecting the components are designed to have low impedance and minimal crosstalk.