• on Miscellaneous Electronics
  • Published in issue 11/2014 on page 68
About the article

Neon Bulbs

Weird Component #89

Neon Bulbs
This installment was inspired by an old Tektronix power supply I saw that used a neon bulb. I originally thought it was a power indicator but a little probing proved that it was actually part of the power supply protection circuitry which surprised me. Let’s take a look at how neon bulbs work and what makes them useful in applications like this.
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