Can an inverter be used on TV signals?
2019-12-15 7:46 am
DC current and Digital TV signals are both carried by a square wave. AC current and the old Analog TV signals are both carried by a sine wave. An electrical inverter is used to to turn DC current into AC current. Is there a way to modify an electrical inverter so it could do the same for OTA TV signals?
回答 (5)
2019-12-16 7:34 pm
Pretty much everything you've said above is wrong. Digital signals over the air are not carried in square waves, rather they are carried as digitally modulated sine waves (sort of).
An inverter is designed to transform power. The clocking frequency is between 20KHz and 100KHz. TV signals are in the MHz range. The components in an inverter don't run at this frequency.
Also, the digital signal will need to be decoded to convert into analogue. That requires processing power.
An inverter is designed to transform power. The clocking frequency is between 20KHz and 100KHz. TV signals are in the MHz range. The components in an inverter don't run at this frequency.
Also, the digital signal will need to be decoded to convert into analogue. That requires processing power.
2019-12-16 10:13 am
No.......................
2019-12-15 1:04 pm
First sentence isn't quite always true. The other thing working against you is thermodynamics. Antenna signals are not very strong and if you could get a true DC output, probably average the antenna signal, and put it into an inverter you wouldn't get enough to measure.
2019-12-15 11:51 am
NO AND NEVER !
TV SIGNAL IS VERY WEAK IN SPACE, ABOUT 1mW, AND ITS CARRIER FREQUENCY IS VERY HIGH THAT NO COMMON POWER INVERTER ABLE TO CATCH IT.
CORRECT YOUR QUESTION MISTAKES....
DC IS NOT A SQUARE WAVE ! IT IS A UNCHANGED STRAIGHT LINE AS DISPLAY IN SCOPE !
DIGITAL TV SIGNAL USES DIGIT MODULATION TO SINE WAVE CARRIER. ALL TV CARRIERS ARE NOT USING SQUARE WAVE.
TV SIGNAL IS VERY WEAK IN SPACE, ABOUT 1mW, AND ITS CARRIER FREQUENCY IS VERY HIGH THAT NO COMMON POWER INVERTER ABLE TO CATCH IT.
CORRECT YOUR QUESTION MISTAKES....
DC IS NOT A SQUARE WAVE ! IT IS A UNCHANGED STRAIGHT LINE AS DISPLAY IN SCOPE !
DIGITAL TV SIGNAL USES DIGIT MODULATION TO SINE WAVE CARRIER. ALL TV CARRIERS ARE NOT USING SQUARE WAVE.
2019-12-15 8:31 am
The amount of energy received from a (digital or analog) TV antenna is tiny, millionths of a watt. Perhaps thousandths of a watt (mW) if you are a block away from the transmitter.
An inverter, as you described it, works with DC input not 100 MHz AC input. IF the RF were powerful enough you could rectify it to DC and run it into an inverter. But the RF input is too small by a factor of millions
An inverter, as you described it, works with DC input not 100 MHz AC input. IF the RF were powerful enough you could rectify it to DC and run it into an inverter. But the RF input is too small by a factor of millions
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