M
martin griffith
- Jan 1, 1970
- 0
My partially deaf neighbour cant afford to install an inductive loop
in her living room so she can hear the TV through the T position on
her hearing aids.
I've offered to see if I can make one, in exchange for home cooked
food. This seems like a fair exchange
A bit of googling suggests that a 25way cable, wired as a coil, fitted
around the ceiling edge will suffice.( approx 3m by 4m)
Any idea how much drive is required for the loop. I was thinking of a
741 and a T0220 npn/pnp output pair, run off +- 15V as a starting
point.
Any comments, better configuration info, bandwidth limits. etc. would
be appreciated
martin
in her living room so she can hear the TV through the T position on
her hearing aids.
I've offered to see if I can make one, in exchange for home cooked
food. This seems like a fair exchange
A bit of googling suggests that a 25way cable, wired as a coil, fitted
around the ceiling edge will suffice.( approx 3m by 4m)
Any idea how much drive is required for the loop. I was thinking of a
741 and a T0220 npn/pnp output pair, run off +- 15V as a starting
point.
Any comments, better configuration info, bandwidth limits. etc. would
be appreciated
martin