Ghost Eliminator for TV Video

186

01:57:30

Twin lead -in antenna  wire connects to antenna terminals on back on TV set.  Connect 500 ohm potentiometer across antenna terminals at set connectors with  adjustable resistor arm led-out through 330 ohm resistor to DIFFERENT ground  than TV chassis ground such as water pipe , ect. 1 K resistor on right is load of TV simulation.  Turn potentiometer to match feed in line to TV set. 

published 10 years ago

thebugger

10 years ago

Typically yes but the potwntiometer may cause a reactance mismatch, since tv's use VHF and UHF frequencies which tend to have a very specific needs for feedline matching. I mean if it's in a receiving antenna it might just do the trick but in a transmitting antenna it's not a good idea to add reactance to reach a given matching Scheme. Anyways if you thought of it good job on the ingenuity ;)

lmccoig

10 years ago

Digital television has not been a ghost problem for me but analog use in past a ghost problem.

hurz

10 years ago

Its a 500000Ohm poti and not 500.

lmccoig

10 years ago

In 1922, it was 500 ohm. Did they have 5 megohm poti then? Popular Electronics, April of 1922, on page 39.

hurz

10 years ago

Its still 500 or 600 Ohm today i guess, but in your circuit its a 500kOhm poti, got it? Btw, ghost pictutes are much more complicated to eliminate, probably you mean fading effect?

lmccoig

10 years ago

Thanks for mentioning about 500 K ohm. Turning outdoor antenna also changes ghost effects.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.