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Groups > sci.electronics.design > #433109
| From | Jasen Betts <jasen@xnet.co.nz> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: Optotriac resistor selection |
| Date | 2016-10-31 05:30 +0000 |
| Organization | "JJ's own news server" |
| Message-ID | <nv6kts$s8q$4@gonzo.alcatraz> (permalink) |
| References | <JQpRz.12757$AI2.10239@fx04.iad> |
On 2016-10-30, bitrex <bitrex@de.lete.earthlink.net> wrote:
> I have a MOC3010 optotriac (from da junk box) that I'm trying to use to
> switch about 100VAC from a small inverter brick to a length of EL wire
> about a meter long.
>
> Right now I'm driving the internal infrared LED through a 1k resistor
> from a 3.7 volt supply. The meter shows that the chip is drawing about
> 3mA of current compared to when the pins are disconnected, so I'm
> assuming the LED is turning on, but it doesn't appear to be enough to
> fire the triac when it's hooked up to this load.
>
> Can anyone suggest a more appropriate value, or a way to calculate such?
.-- inverter --- rope --||-------. ... mosfet could be BJT.
| `-|| with antiparallel diode
--- ||
- .-|`--- from microcontroller
|
---
-
it may not be possible to go fully dark.
--
This email has not been checked by half-arsed antivirus software
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Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:11 -0400
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:13 -0400
Re: Optotriac resistor selection Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2016-10-30 13:23 -0400
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:35 -0400
Re: Optotriac resistor selection Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2016-10-30 13:39 -0400
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:45 -0400
Re: Optotriac resistor selection John Larkin <jjlarkin@highlandtechnology.com> - 2016-10-30 10:52 -0700
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-11-01 12:29 -0400
Re: Optotriac resistor selection Lasse Langwadt Christensen <langwadt@fonz.dk> - 2016-11-01 09:42 -0700
Re: Optotriac resistor selection "Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com> - 2016-10-30 21:39 +0000
Re: Optotriac resistor selection Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2016-10-31 02:50 +0100
Re: Optotriac resistor selection "Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com> - 2016-10-31 19:41 +0000
Re: Optotriac resistor selection John Larkin <jjlarkin@highlandtechnology.com> - 2016-10-30 10:28 -0700
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:36 -0400
Re: Optotriac resistor selection John Larkin <jjlarkin@highlandtechnology.com> - 2016-10-30 10:49 -0700
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-30 13:54 -0400
Re: Optotriac resistor selection Winfield Hill <hill@rowland.harvard.edu> - 2016-10-30 11:33 -0700
Re: Optotriac resistor selection "Dave M" <dgminala@mediacombb.net> - 2016-10-30 12:47 -0500
Re: Optotriac resistor selection Jasen Betts <jasen@xnet.co.nz> - 2016-10-31 05:30 +0000
Re: Optotriac resistor selection piglet <erichpwagner@hotmail.com> - 2016-10-31 07:56 +0000
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-31 05:36 -0400
Re: Optotriac resistor selection Frnak McKenney <frnak@far.from.the.madding.crowd.com> - 2016-10-31 06:38 -0500
Re: Optotriac resistor selection bitrex <bitrex@de.lete.earthlink.net> - 2016-10-31 08:59 -0400
Re: Optotriac resistor selection Frnak McKenney <frnak@far.from.the.madding.crowd.com> - 2016-11-01 08:34 -0500
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