Receba informações atualizadas sobre Microeletrônica.

Projetos de Circuitos de Telefonia e Intercomunicação


  1. 1-line telephone status indicator (PDF)
  2. 300 baud modem circuit schematic
  3. 4-line telephone status indicator (PDF)
  4. Assorted telephone circuits
  5. Caller ID decoder
  6. Caller ID decoder part 1
  7. Caller ID decoder part 2
  8. Cut Phone Line Detector
  9. Cut phone line detector
  10. Detecting a telephone RING
  11. Digisound ring modulator
  12. Digital/Standard Phone Line Tester
  13. DTMF decoder / logger
  14. DTMF Generator/Decoder
  15. FM Telephone Bug
  16. FM telephone bug
  17. Greek telecard reader
  18. Hold function for Telephone
  19. Home made PBX / PABX
  20. Incoming call indicator
  21. Infinity Transmitter Schematic and Plans
  22. Interface cables for various cell phones
  23. Line in use indicator (PDF)
  24. NCDS Interface Schematic for Nokia 3110, 8110, 8110i
  25. Phone Busy Indicator
  26. Phone in-use
  27. Phone In-Use Light
  28. Phone Line to Audio
  29. Phone Off-Hook Indicator
  30. 'phone rang' indicator light
  31. Phone ring circuit schematic
  32. Phone to audio interface
  33. Phone-In-Use indicator
  34. Ringing Phone Light Flasher
  35. Simple circuit to connect telephone equipment to audio mixer
  36. Simple Phone Tap
  37. Talking phone dial monitor
  38. Taxi phone automatic dialler
  39. Telephone Audio Interface
  40. Telephone autodialler
  41. Telephone Hold Button
  42. Telephone in use light
  43. Telephone interfacing / caller ID using a PIC microcontroller
  44. Telephone In-Use LED Indicator
  45. Telephone In-Use Relay Circuit
  46. Telephone Line Monitor
  47. Telephone line simulator
  48. Telephone music on hold box
  49. Telephone privacy adapter
  50. Telephone Recorder
  51. Telephone recording circuit
  52. Telephone ring controlled relay
  53. Telephone Ring Generator Using 60Hz Power Transformer
  54. Telephone Ring Generator Using Switching Power Supply
  55. Telephone ringing circuits
  56. Universal telephone hold
  57. Use old phones as an intercom

Nenhum comentário: