- on Miscellaneous Electronics
- Published in issue 11/2014 on page 68
Weird Component #89
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.