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Neon bulbs typically start to glow (or "strike") at a voltage of around 90 to 120 volts. Once lit, the sustaining voltage needed to keep the bulb glowing is somewhat lower, typically around 50 to 80 volts. The current required to maintain the glow is usually very low, often in the range of 0.1 to 5 milliamps (mA).
In summary:
- Strike Voltage:90-120 volts
- Sustaining Voltage: 50-80 volts
- Current: 0.1-5 mA