---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 03/08/11: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:33 AM - Bistable relay control (Jan de Jong) 2. 10:03 AM - Low power and weight exercise (Jan de Jong) 3. 10:57 AM - Re: Bistable relay control (Jeff Luckey) 4. 12:51 PM - Re: Bistable relay control (Jan de Jong) ________________________________ Message 1 _____________________________________ Time: 09:33:21 AM PST US From: Jan de Jong Subject: AeroElectric-List: Bistable relay control I'm thinking of making a monostable relay type control for bistable relays (if and when) in one or more (or none) of the following shapes: - 2 square inches of pcb - mounted in a DSub DE-9 backshell - integrated with a Tyco BDS-A contactor plug Components will be SMD's. Attached two contemplated variations. Any and all comments welcome. Jan de Jong ________________________________ Message 2 _____________________________________ Time: 10:03:11 AM PST US From: Jan de Jong Subject: AeroElectric-List: Low power and weight exercise I concocted a design for a very light weight and very low control power Rotax 914 electrical system. It features LiFePO4 batteries, bistable relays with monostable control and solid state load switches. See attached page if you will. Thoughts welcome. Jan de Jong ________________________________ Message 3 _____________________________________ Time: 10:57:47 AM PST US From: "Jeff Luckey" Subject: RE: AeroElectric-List: Bistable relay control Jan, I'm assuming that you are referring to the Tyco latching relays that were discussed here a few weeks ago. That looks like a lot of (pretty cool) engineering, but is it really necessary? I'm thinking that a SPDT (on)- off - (on) toggle switch is all that is really req'd to control the Tyco latching relay. Am I missing something? -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jan de Jong Sent: Tuesday, March 08, 2011 09:25 Subject: AeroElectric-List: Bistable relay control I'm thinking of making a monostable relay type control for bistable relays (if and when) in one or more (or none) of the following shapes: - 2 square inches of pcb - mounted in a DSub DE-9 backshell - integrated with a Tyco BDS-A contactor plug Components will be SMD's. Attached two contemplated variations. Any and all comments welcome. Jan de Jong ________________________________ Message 4 _____________________________________ Time: 12:51:34 PM PST US From: Jan de Jong Subject: Re: AeroElectric-List: Bistable relay control Jeff, You are absolutely right. It is only when one wants to do more than switch one latching relay on and off that it is useful for latching relays to behave like monostable relays. Say there are several latching relays in a system: 1. Progressive power down may be needed so that a relay has power for switching off (can also be in a checklist) 2. It may be nice to have a handle position reflect a relay state (can also be provided with an indicator led) 3. The system requires automation - automation has open/close outputs and cannot be expected to provide pulses. Jan de Jong Jeff Luckey wrote: > > Jan, > > I'm assuming that you are referring to the Tyco latching relays that were > discussed here a few weeks ago. > > That looks like a lot of (pretty cool) engineering, but is it really > necessary? I'm thinking that a SPDT (on)- off - (on) toggle switch is all > that is really req'd to control the Tyco latching relay. > > Am I missing something? > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jan de > Jong > Sent: Tuesday, March 08, 2011 09:25 > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: Bistable relay control > > I'm thinking of making a monostable relay type control for bistable > relays (if and when) in one or more (or none) of the following shapes: > - 2 square inches of pcb > - mounted in a DSub DE-9 backshell > - integrated with a Tyco BDS-A contactor plug > Components will be SMD's. > > Attached two contemplated variations. > > Any and all comments welcome. > > Jan de Jong > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.