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
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| Subject: | 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
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| Subject: | 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
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| Subject: | 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
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| Subject: | Re: 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
>
>
>
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