Dimmer for neon tubes

A neon tube cannot be dimmed as easily as an incandescent lamp because the tube can start only at a voltage much higher than the mains, after which it will remain lit at the mains voltage. The level of both the starting voltage and the working voltage depends on the temperature of the tube. Normally,[…]

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Thermocouple-to-DMM interface

Thermocouples are economical and rugged devices for temperature measurements. Because of their small size, they respond quickly and are good choices where fast response to temperature changes is important. Type K thermocouples have a wide temperature range. “and are used from cryogenics to jet engine exhaust analysis. The present circuit converts thermocouple outputs into a direct[…]

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