tom@syssoft.com (Rodentia) (04/12/91)
Apparently, there has been a problem with my reply-to: header. Please re-send any mail to tom@syssoft.com. I apologize for any inconvenience this has caused. I've whined to the system administrator, so the problem should be fixed shortly. I am currently considering using either a low pass filtered output as a reference for a comparitor, or the voltage division of a high/low voltage memory (with some big resistors to decay (adapt) the memory over time) as the reference for a comparitor. Once this is done, I am considering either using a PLL as an FM (or rather PFM in my case) receiver, or a 555 circuit to reconstruct the waveform from one edge data. The second approach is again courtesy of Forrest Mimms, from his Radio Shack "Timer Circuits for Junior Engineers" (or something like that). I haven't checked it carefully, but it seems to be a one shot to recreate the known pulse width. The PLL approach may not work well with a comparitor, so I may have to come up with a similar approch for amplification. Is it as simple as just adding a feedback resistor? Thanks in advance. -- Thomas Roden | tom@syssoft.com Systems and Software, Inc. | Voice: (714) 833-1700 x454 "If the Beagle had sailed here, Darwin would have | FAX: (714) 833-1900 come up with a different theory altogether." - me |