Has anyone noted any timing variance when wearing vintage LED watches outside on very hot/cold days? Granted, these circuits were designed to be stable over a wide range of anticipated temperature fluctuations, though back in my college electronics days we built a digital clock with a series of 7 segment LED displays for a laboratory experiment. We adjusted the circuit’s potentiometer and trimmer capacitor so that the seconds digits would advance at the rate of 60s/m by way of a frequency counter and a wristwatch. Once the circuit was adjusted correctly, we blasted the circuit with freeze spray and noted an instantaneous change on the frequency counter. Likewise, heating the circuit with a heat gun would also induce a change in output frequency. Of course, a watch that a person is wearing would likely never be subject to such extreme temperature fluctuations, though I would expect that a vintage LED watch worn outdoors by someone in Greenland would vary significantly with the same watch being worn outdoors by someone in Mexico. The watch would have to be tuned (if possible) by way of the trimmer capacitor to achieve optimal accuracy in these extreme environments.
Has anyone moved to a warmer or colder environment and needed to make adjustments accordingly?
Just curious…
Jason
Has anyone moved to a warmer or colder environment and needed to make adjustments accordingly?
Just curious…
Jason
"We are showroom dummies"- Kraftwerk