Differences

This shows you the differences between two versions of the page.

--- electronic:led:coh309toa [2018/12/14 10:27] – tony
+++ electronic:led:coh309toa [2026/09/06 20:12] (current) – tony
@@ Line 1: / Line 1: @@
-{{ :electronic:led:pc143189.jpg?200|COH309TOA}}
+{{ :electronic:led:pc143189.jpg?200|COH309TOA overview}}
-^<html><p style="text-align:center">LCD Description</p></html>||
+^  LED Description  ||
 ^Model|**COH309TOA/E1**|
 ^Manufacturer| |
 ^Recovered from|Clock|
 ^Board IDs|COH309TOA/E1, PC-1 94HB|
-^Digits|4|
+^Digits|3½|
 ^Colour|red|
 ^Driver IC| |
@@ Line 13: / Line 13: @@
 ^Pin spacing|0.1"|
+{{ :electronic:led:7_segment_display_labeled_lc.svg.png|segment labels}}
 ^Pin#^digit^seg^digit^seg|
 ^1| | |am|
@@ Line 30: / Line 31: @@
 ^15| | ^k2| |
 ^16^k1| | |
-\\
-\\
-====Datasheets====
+===== Datasheets =====
+  *
+\\
 ----
-===== Examples : =====
+===== 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:pc143189.jpg?800|COH309TOA}}
+{{:electronic:led:pc153242a.jpg?400|K1 cathode}}
-{{:electronic:led:pc143192.jpg?800|COH309TOA}}
+{{:electronic:led:pc153226a.jpg?400|K2 cathode}}

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