Catalogue:

schematic diagram

Basic function description

Extended function description

Nixie tube description

Physical product drawing

Schematic diagram:

Note: due to the requirements of sampling accuracy, 1% high-precision resistors are required for sampling related resistors R5, R7, R8, R9 and R15；

Basic function description:

Three level display, which can support the display of input voltage, output voltage and charging current; Switch the display data once every 3 seconds；

The display range of vehicle charging input voltage is 5v~40v, the display error is within ± 0.2V when the input voltage is 5v~24v, and the display error is within ± 0.3V when the input voltage is 24v~40v；

The display range of vehicle charging output voltage is 5v~40v. The current scheme is to output power of 5V and supply power to MCU at the same time; Other fast charging schemes have output voltages of 9V and 12V, which need to be powered to MCU after 5V voltage stabilization; The display error of output voltage is within ± 0.2V;

Basic function description:

The display error of output current is within ± 0.2A; At present, there are two current display methods, one is with the unit "a", but the result retains 1 decimal place, and the other is that the result retains 2 decimal places;

The number of USB charging ports can be expanded；

Extended function description:

Overvoltage prompt function; When the standard voltage is 12V and the input voltage exceeds the standard voltage ± 2V, there will be a flashing prompt; When the standard voltage is 24V and the input voltage exceeds the standard voltage ± 4V, there will be a flashing prompt；

Breathing lamp function, with breathing lamp prompt when charging；

Temperature real-time display function requires hardware to add thermistor；

Nixie tube description:

The nixie tube is a 6-pin three digit common cathode nixie tube with decimal point, and the size is 0.25 inch

Physical product drawing:

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