Joined: 10 Oct 2008 Posts: 1 Location: Washinton, NC
10 Oct 2008 18:23 Transister relay
need basic help. have design of SCR probe for detecting water in boat bilge.
How can I build a simple solid state circuit so I can power alarm horn or light
without mechanical relay. The alarm horn should be 12v.
Make sure that SCR is rated for horn current, has sufficient heatsink and has enough gate sensitivity. MCR72-006 is one example that might work for you.
