Quote:
Originally Posted by Yamamaya42
...
19-4120 - 120 uh Peaking Coil, 12k Shunt x2
however, the orig was on a 22k, meaning I will have to stick a 10k in there to keep the circuit tuned?
|
Peaking coils are not sharply tuned, like an IF or tuner coil. The shunt (in other words, parallel) resistor is there to damp the resonance so that you do not get too much peaking / ringing etc. A lower shunt resistor usually just means you will get less peaking and a slightly less sharp picture. You cannot improve this by adding a
series resistor.
When you get the coil, if it is physically possible to disconnect one end of the resistor from the coil without mechanically destroying it, you could do that and add a shunt resistor of the specified value.
Edit: I think I misread. If you mean adding 10k in series with the 12k (not in series with the whole assembly), that would work too.
Similarly, if a peaking coil calls for a shunt resistor but the replacement has none, you can just add a resistor in parallel.