My Experiments

[Seden]

Since I've been on this forum for many years and only added comments to posts I thought I should start contributing. So here goes. I built a simple fet ion detector that had a 100 micrometer in the drain lead and connected the gate to one end of a Aqua Aura Crystal. The other end of the crystal was connected to a copper disk as the antenna. Results: the meter stayed at a constant level-period. So OK I reconfigured the single FET as a Pierce oscillator with this crystal just to see if I could make it oscillate and since it was not cut properly there no oscillation. I have several papers the different axis of crystals but this was a experiment that was quick,easy and just for fun so yes I do know better.

What does intrigue me though seriously is building a modified version of Estebans modulated light. My version will use a red laser instead of a red LED and instead of listening to the sound change on an FM radio I will have a simple phase detector to detect the changes in the laser beams phase with respect to the modulator. If the phase detector from Don Lancastors CMOS book isn't good enough then it's going to be a 74hc4046 PLL for precision measurements. So stay tuned.

I can't believe that Esteban still isn't well enough to get on the Forum. Anyone know how long before he can join us?

Randy