Differences

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--- glossary:glossary_l [2015/07/08 15:09] – [LED] Greytech
+++ glossary:glossary_l [2015/07/11 18:47] – [Latching] add link to example product dpharris
@@ Line 7: / Line 7: @@
-A pulse method to change the state from on to off or vice versa.     \\ [[http://www.heathcote-electronics.co.uk/RelayBrd.htm|Dead Link Please Replace]]  \\
+Latching can apply to both mechanical devices and electronic circuits.
-[[http://www.4qdtec.com/trd.html|Dead Link Please Replace]]
+An example of mechanical latching would be a push on / push off switch, [[https://en.wikipedia.org/wiki/Latching_switch|see here.]] See also description of a [[https://en.wikipedia.org/wiki/Relay#Latching_relay|latching relay.]] (e.g. [[http://www.digikey.ca/product-detail/en/EE2-5NU/399-11056-5-ND/4291122|relay]])\\
+An example of an electronic latch would be [[https://en.wikipedia.org/wiki/Flip-flop_(electronics)|a flip-flop]] or bistable circuit.\\
+A standard relay may be made self latching by supplying a current path for the coil through one of its normally open contact sets.
 ===== Layout Command Control =====
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