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--- electronic:led:coh309toa [2026/09/05 21:35] – external edit 127.0.0.1
+++ electronic:led:coh309toa [2026/09/06 20:12] (current) – tony
@@ Line 1: / Line 1: @@
+{{ :electronic:led:pc143189.jpg?200|COH309TOA overview}}
+^  LED Description  ||
+^Model|**COH309TOA/E1**|
+^Manufacturer| |
+^Recovered from|Clock|
+^Board IDs|COH309TOA/E1, PC-1 94HB|
+^Digits|3½|
+^Colour|red|
+^Driver IC| |
+^Arduino driver| |
+^Connector|pin header|
+^Num Pins|16|
+^Pin spacing|0.1"|
+{{ :electronic:led:7_segment_display_labeled_lc.svg.png|segment labels}}
+^Pin#^digit^seg^digit^seg|
+^1| | |am|
+^2|1|b|pm|
+^3|1|c|2|e|
+^4|2|b|2|g|
+^5|2|c|2|d|
+^6|2|a|2|f|
+^7|3|f|3|a|
+^8|3|g|3|b|
+^9|3|d|3|c|
+^10|3|e|4|e|
+^11|4|b|4|g|
+^12|4|c|4|d|
+^13|4|a|4|f|
+^14| | |:| |
+^15| | ^k2| |
+^16^k1| | |
+===== Datasheets =====
+  *
+\\
+----
+===== Examples =====
+{{:electronic:led:pc143189.jpg?800|COH309TOA front}}
+{{:electronic:led:pc143192.jpg?800|COH309TOA back}}
+A similar led module showing the type of multiplexing going on, each half cycle of the mains AC power, it switches cathodes :
+{{:electronic:led:pc153239a.jpg?400|Multiplexed combination of K1 & K2}}
+{{:electronic:led:pc153242a.jpg?400|K1 cathode}}
+{{:electronic:led:pc153226a.jpg?400|K2 cathode}}

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