Marshall Dudley wrote:
>I see no way that would limit current. That is the workings of an SCR, which is >an on/off device. I have used an identical circuit many times (in fact I have >a patent on using such a configuration as a PUT) in place of a low voltage scr >or put. > >Marshall > >Dave Lewis wrote: > >> Hi all, >> A colleague of mine has come up with this useful circuit. It limits to >> current to just under 1ma, but if you change the value of R1, you should be >> able to set the current to what you like (within reason!). Don't get too >> hung up if you can't find the correct transistors, just make sure they are >> bipolar and PNP and NPN as per the diagram. >> >> Dave. Hi... Yes you are right Marshall <embarrassed grin!> I must admit I didn't check it before posting... I trusted the guy who gave it to me. Apologies. Ole posted a good one. Dave. -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: silver-list@eskimo.com Silver List archive: http://escribe.com/health/thesilverlist/index.html Address Off-Topic messages to: silver-off-topic-l...@eskimo.com OT Archive: http://escribe.com/health/silverofftopiclist/index.html List maintainer: Mike Devour <mdev...@eskimo.com>
