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How do I splice in an rc filter with a 2200 microFarad cap and a series 25 Ohm resistor?

Chris Andrews
Last Modified: 2014-03-01

I've got a wireless headset for listening to my tv through the headphones, it has an fm transmitter that plugs into my tv/cable-box audio out.

The system works great on batteries, but I would love to be able to plug the transmitter into the outlet so I can just leave it on all the time.

Trouble is, with the transmitter plugged in instead of on batteries, there is a loud AC hum in the sound.

Looking around online, I found a comment from someone who experienced the same thing and fixed it like this:

"I cut into the leads from the power supply and installed an R-C filter consisting of a 2200 microFarad cap and a series 25 Ohm resistor"

Now, I know how to splice wires together - and I'm assuming I can get what I need at radio shack....

But what exactly do I need - is this a single piece, or do I need to get a 2200 microFarad cap and 25 Ohm resistor and put them together somehow?

A brief tutorial on what I need and how to do this would be very helpful!

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