Das Szenario
A technician needs to align a satellite dish by watching a 10-LED bar graph that shows relative signal strength from the LNB.
Was diese Zeichnung zeigt
Die dahinterstehenden Entscheidungen verstehen.
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.