Version 2.04 Big Nixie tube display with encoder button adjustment Key benefits Precise current pulse control: two independent tuning modes let you adjust current in small, deliberate steps or in larger increments as needed. Flexible fine and coarse adjustments: fine tuning uses the last digit with a coefficient of 150, while coarse adjustment uses the penultimate digit with a coefficient of 1 50; each coefficient can be configured separately for fine control. Wide range with clear minimums and maximums: minimum per pulse is 0.01 mA, and the maximum coarse adjustment per pulse can reach 5.00 mA. Readable display and intuitive control: a Big Nixie tube display provides clear readouts, paired with an encoder button for straightforward adjustments. What it does Fine tuning mode: adds or subtracts 1 from the last digit (coefficient 150) to enable precise, smallstep changes. Coarse adjustment mode: adds or subtracts 1 from the penultimate digit (coefficient 1 50) for faster, largerstep changes. Independent settings: the fine adjustment and coarse adjustment coefficients can be set separately, giving you full control over step sizes during tuning. User interface: navigation and adjustments are performed using a compact encoder button, with the results shown on a Big Nixie tube display for easy reading. Core features Fine tuning mode: last digit adjustment with coefficient 150. Coarse adjustment mode: penultimate digit adjustment with coefficient 1 50. Independent coefficient settings: fine adjustment and coarse adjustment can be configured separately. Perpulse current range: minimum 0.01 mA per pulse. Coarse perpulse maximum: 5.00 mA per pulse. Display: Big Nixie tube display for contrast readouts. Control: encoder button adjustment for precise, incremental changes. Compatibility and use cases Lab bench current pulse calibration: dial in exact current pulses for precision measurements and repeatable test conditions. LED driver or sensor testing: adjust pulse currents gradually to evaluate response, efficiency, and thermal behavior without overdriving components. Electronic development and prototyping: finetune signal currents during circuit debugging, rapidly shifting from micromilliamp precision to larger step changes as needed. Use scenarios Scenario 1: You need to set a small pulse current of 0.05 mA for a sensitive sensor. Use fine tuning mode to increment from 0.01 mA in precise steps until you reach 0.05 mA, observing the Big Nixie tube display for exact values. Scenario 2: You are testing a LED driver that requires quick ramp changes. Switch to coarse adjustment mode, set the penultimate digit coefficient to a higher value, and adjust by larger steps to reach the target current faster, then finetune with the fine mode if needed. Scenario 3: During calibration, you must switch between tiny current steps and larger changes while monitoring results on a clear, legible display. The independent fine and coarse coefficients support this workflow without reconfiguring hardware. Technical notes Version: 2.04 Display: Big Nixie tube display for clear readouts Control: encoder button adjustment for intuitive operation Modes: Fine tuning mode and Coarse adjustment mode Fine tuning coefficient: 150 (affects the last digit) Coarse adjustment coefficient: 1 50 (affects the penultimate digit) Separation: Fine and coarse coefficients can be set independently Current per pulse: minimum 0.01 mA; coarse perpulse maximum 5.00 mA