Rangkaian Pemancar TV Sederhana

This Transmitter Circuit TV uses standard 1 FM modulation for sound and PAL for video modulation. Audio signal will be modulated is pre-amplified usin
Ali Muhammad Hanafiyah

Rangkaian Pemancar TV Sederhana - Salam Electrical Engineer yang setia membaca artikel pada blog ini. Semoga tetap bersemangat untuk belajar dan terus belajar tentang elektronika. 

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Skema Rangkaian


Skema Rangkaian Pemancar TV Sederhana
Skema Rangkaian Pemancar TV Sederhana

This Transmitter Circuit TV uses standard 1 FM modulation for sound and PAL for video modulation. Audio signal will be modulated is pre-amplified using the transistor Q1 and associated components.

The transistor Q2 has two jobs: production of carrier frequency and modulation. The pre-amplified audio signal is fed to the base of transistor Q2 for modulation. 

Capacitor C5 and inductor L1 forms the tank circuit which is responsible for producing the carrier frequency. The video signal is fed to the emitter of transistor Q2 via POT R7 for modulation. The modulated composite signal (audio+video) is transmitted by the antenna A1.

Inductor L1 can be made by making 4 turns of 24SWG enameled copper wire on a 6mm dia: plastic former. T1 can be a radio frequency transformer with built in capacitor. (Can be found on old transistor radio boards). 

Antenna A1 can be a 1M long copper wire. (Experiment with the length to get optimum performance). This transmitter is working in VHF band somewhat between 50 – 210MHz. This transmitter is compatible only with PAL B and PAL G systems.

List Componet:

  1. R1 = 10KOhm
  2. R2 = 47KOhm
  3. R3 = 15KOhm
  4. R4 = 8.2KOhm
  5. R5 = 47KOhm
  6. R6 = 47KOhm
  7. R7 = 1Kohm
  8. resistor variable R8 = 75Ohm
  9. C1 = 10uF/25Volt
  10. capacitor electrolik C2 = 0.001uf/10nF
  11. capacitor ceramic C3 = 100nF
  12. C4 = 10nf C5 = 47pF (variable capacitor)
  13. C6 = 10nF
  14. C7 = 10pF
  15. C8 = 27pF
  16. c9 = 100nF
  17. C10 = 470uF
  18. c11 = 10nF
  19. C12 = 220uF/25Volt
  20. Q1 = BC547 NPN transistor
  21. Q2 = BC547 NPN transistor
  22. T1 = T1 can be a radio frequency transformer with built in capacitor. (Can be found on old transistor radio boards).
  23. L1 = 4 turns of 24SWG enameled copper wire on a 6mm dia: plastic former.

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