Thread Rating:
  • 1 Vote(s) - 5 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Si5351 VFO/BFO
#49
A ove kristale 10, 20, 50ppm ili još neke "grdje" sa većim koeficijentom, koje god, na primer oni mali valjkasti male mase 32.768KHz možemo na kraju da iskoristimo za "veoma precino merenje temperature" !!!

Poenta je što temperaturu pretvaramo u frekvenciju, ne pretvaramo u napon kao što se radi sa NTC, PTC ili termo-par!
Lakše je baratati frekvencijom na 8. ili 9. decimali nego naponom/strujom/otporom na tek 4. ili 5. decimali merne veličine pri čemu sa naponom tek imamo problem sa referencama i kompenzacijama.

Spomenuh da "ima tamo negde" Ceziumski etalon frekvncije 10MHz koji sa ovom mojom predloženom metodom može da se savršeno upari jer nam trebaju etalonske vrednosti za temperaturu, kako za merenje tako i za upravljanje temperaturom tamo neke komore na tačno 20*C (20.000*C).
Reply


Messages In This Thread
Si5351 VFO/BFO - by mikikg - 03-26-2022, 12:01 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 12:36 PM
RE: Si5351 VFO/BFO - by ELFI - 03-26-2022, 01:03 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 01:24 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 01:50 PM
RE: Si5351 VFO/BFO - by progster - 03-26-2022, 02:30 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 02:45 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 03:29 PM
RE: Si5351 VFO/BFO - by Gosha - 03-26-2022, 04:45 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 09:42 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 11:03 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 11:35 PM
RE: Si5351 VFO/BFO - by dlalkovic - 03-27-2022, 08:27 AM
RE: Si5351 VFO/BFO - by Macola - 03-27-2022, 09:46 AM
RE: Si5351 VFO/BFO - by mikikg - 03-27-2022, 11:33 AM
RE: Si5351 VFO/BFO - by gorankg - 03-27-2022, 07:43 PM
RE: Si5351 VFO/BFO - by mikikg - 04-17-2022, 05:10 PM
RE: Si5351 VFO/BFO - by mikikg - 04-18-2022, 01:56 PM
RE: Si5351 VFO/BFO - by mikikg - 04-18-2022, 03:40 PM
RE: Si5351 VFO/BFO - by mikikg - 04-19-2022, 11:06 PM
RE: Si5351 VFO/BFO - by mikikg - 04-20-2022, 08:10 PM
RE: Si5351 VFO/BFO - by savan - 04-21-2022, 07:47 PM
RE: Si5351 VFO/BFO - by mikikg - 04-21-2022, 09:45 PM
RE: Si5351 VFO/BFO - by mikikg - 04-21-2022, 10:10 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 10:41 AM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 10:57 AM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 12:28 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 02:21 PM
RE: Si5351 VFO/BFO - by ddanijel - 04-22-2022, 05:04 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 06:33 PM
RE: Si5351 VFO/BFO - by gorankg - 04-22-2022, 06:44 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 07:00 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 07:27 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 07:55 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 08:17 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 09:23 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 10:16 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 11:07 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 07:23 AM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 11:22 AM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 12:46 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 02:33 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 02:46 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 03:28 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 03:57 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 04:24 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 04:49 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 05:33 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 05:44 PM
RE: Si5351 VFO/BFO - by mikikg - 04-24-2022, 01:00 AM
RE: Si5351 VFO/BFO - by savan - 04-24-2022, 08:55 AM
RE: Si5351 VFO/BFO - by mikikg - 04-24-2022, 10:07 AM

Forum Jump:


Users browsing this thread: 1 Guest(s)