Simple CATV Upstream Fiber Optic Receiver Uses DC Pilot AGC:
01/20/03 Electronic Design - Ideas for Design / Upstream fiber
links in a community antenna television (CATV) system are
usually among the most difficult elements of the network to
align properly. Set-top boxes and cable modems employ
"long-loop" automatic gain control (AGC) (in other words,...
Simple Circuit Uses Optical Fiber To Send Relative Humidity Data
: 04/01/02 Electronic Design - Ideas for Design / The
circuit shown in the figure measures relative humidity in air at
the low temperatures found in applications like cold storage of
food items and greenhouses. Instead of using electrical signal
cables that...
