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--- en:elektronik:wechsellichtschranke [2023-05-27 21:41] – rainer
+++ en:elektronik:wechsellichtschranke [2024-09-29 07:35] (current) – R1 optional; typo rainer
@@ Line 1: / Line 1: @@
 ====== Proximity Sensor with PLL-IC ======
@@ Line 16: / Line 14: @@
 Q1 is the LED driver and delivers the signal in the right phase; R4 determines the current through the LED.
-The output at pin 8 is an openn collector transistor that can drive 100mA and withstand 15V.
+The output at pin 8 is an open collector transistor switched on if the PLL locks, i.e. reflecting surface or not disrupted.
+It can drive 100mA (on) and withstand 15V (off); the resistor R1 is shown only for convenience.