CAD CAM EDM DRO - Yahoo Group Archive

Re: Getting Parallel port to run relay

Posted by bertmantx
on 2005-01-27 20:59:10 UTC
--- In CAD_CAM_EDM_DRO@yahoogroups.com, Stephen Wille Padnos
<spadnos@s...> wrote:
> bertmantx wrote:
>
> >[snip]
> >
> >
> >Shouldn't the circuit have fired with 5v power source going
directly
> >to Base? Or does it have to be current reduced with resistor?
> >
> >
> If you attach a high current supply directly to the base of a
> transistor, you'll fry the transistor. The effective circuit
between
> the base and emitter of a transistor is just a diode, so
connecting V+
> -> base ---- emitter -> ground is a bad thing.
>
> You can use anything between a 1K to a 5K resistor, depending on
the
> required relay current.
>
How much current is required to fire 2222 xsistor?

Discussion Thread

bertmantx 2005-01-27 19:07:15 UTC Getting Parallel port to run relay Robert Campbell 2005-01-27 19:25:28 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay codeSuidae 2005-01-27 20:02:30 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay lanebarr@b... 2005-01-27 20:07:49 UTC re:Getting Parallel port to run relay bertmantx 2005-01-27 20:28:50 UTC Re: Getting Parallel port to run relay Stephen Wille Padnos 2005-01-27 20:35:58 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay bertmantx 2005-01-27 20:55:31 UTC Re: re:Getting Parallel port to run relay bertmantx 2005-01-27 20:59:10 UTC Re: Getting Parallel port to run relay codeSuidae 2005-01-27 21:14:36 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay codeSuidae 2005-01-27 21:40:30 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay JanRwl@A... 2005-01-27 23:39:39 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay JanRwl@A... 2005-01-27 23:43:18 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay jerrydotson32531 2005-01-28 03:25:21 UTC Re: Getting Parallel port to run relay Wayne 2005-01-28 03:34:47 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Andy Wander 2005-01-28 05:20:20 UTC RE: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay vrsculptor 2005-01-28 06:21:46 UTC Re: Getting Parallel port to run relay JCullins 2005-01-28 06:47:32 UTC Re: [CAD_CAM_EDM_DRO] re:Getting Parallel port to run relay JCullins 2005-01-28 06:54:04 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay turbulatordude 2005-01-28 07:37:29 UTC Re: Getting Parallel port to run relay accessing the paralle port bertmantx 2005-01-28 10:07:02 UTC Re: Getting Parallel port to run relay bertmantx 2005-01-28 10:09:31 UTC Re: Getting Parallel port to run relay bertmantx 2005-01-28 10:17:51 UTC Re: Getting Parallel port to run relay Codesuidae 2005-01-28 10:34:53 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Alan Marconett 2005-01-28 11:24:23 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Alan Marconett 2005-01-28 12:02:31 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Andy Wander 2005-01-28 12:28:37 UTC RE: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Roy J. Tellason 2005-01-28 12:37:22 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Alan Marconett 2005-01-28 13:13:07 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay turbulatordude 2005-01-28 14:32:43 UTC Re: Getting Parallel port to run relay Andy Wander 2005-01-28 15:19:17 UTC RE: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Scott L Golden 2005-01-28 17:47:35 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Wayne 2005-01-28 18:25:04 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Andy Wander 2005-01-28 18:50:57 UTC RE: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Scott L Golden 2005-01-28 19:18:19 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay turbulatordude 2005-01-28 19:54:06 UTC Re: Getting Parallel port to run relay Alan Marconett 2005-01-29 10:37:20 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Tom Hubin 2005-01-29 12:40:35 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Tom Hubin 2005-01-29 13:17:49 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay codeSuidae 2005-01-29 13:19:27 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Scott L Golden 2005-01-29 17:00:14 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Raymond Heckert 2005-01-29 18:51:29 UTC Re: [CAD_CAM_EDM_DRO] Getting Parallel port to run relay Tom Hubin 2005-01-30 16:07:42 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay Roy J. Tellason 2005-01-30 16:53:34 UTC Re: [CAD_CAM_EDM_DRO] Re: Getting Parallel port to run relay