상황
A technician needs to align a satellite dish by watching a 10-LED bar graph that shows relative signal strength from the LNB.
이 도면에 담긴 내용
그 이면의 의사결정을 읽어 보세요.
01
Use an LM3914 to drive ten LEDs in bar mode
02
Rectify RF input with a 1N4148 detector and RC filter
03
Power the meter from a 9V DC supply
Reuse this netlist when building or documenting a handheld satellite finder or signal strength meter with LED bar display.