Tuesday, January 7, 2014

Simple Analog TV Transmitter Circuit Schematic

Eltronicschool. - Although digital television has been developing this day, but analog television still present in our live with good quality. When we said about television we will receive the channel because there are many television transmitter that provide program to us that transmitted to our receiver television at home, mobile, etc.

For us that specially intent in electronic field study, maybe it is will foreign again that we will know more electronic circuit schematic that offer us about television transmitter, analog TV transmitter or Digital TV transmitter. 

In this time we want to provide you one of analog TV transmitter circuit schematic that we called as simply electronic circuit schematic that based on transistor as the main component. This circuit schematic can be given input audio and video like from VCD player or handy camp.

Circuit Schematic

Figure 1. Analog TV Transmitter Circuit (Source: Circuitstoday)

Component List
  • Please see more component like in figure 1 of Analog TV Transmitter Circuit above

Description:
  1. Electronic circuit schematic like in figure 1 above show us about analog TV transmitter circuit schematic that very simply with input analog audio and video.
  2. The TV transmitter circuit given here uses UK standard 1 FM modulation for sound and PAL for video modulation. 
  3. The audio signal to be modulated is pre-amplified using the transistor Q1 and associated components. 
  4. 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. 
  5. Capacitor C5 and inductor L1 forms the tank circuit which is responsible for producing the carrier frequency. 
  6. 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. 
  7. This TV transmitter circuit can be operated from 12V DC. Either a 12V DC power supply or a battery can be used for the purpose, using a battery will surely reduce noise and improve the performance.
  8. If you are going with a DC power supply, then it must be well regulated and free of  noise.
Reference Source: Circuitstoday blog

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