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I drive a Prius which has a "push on, push off" switch. What the switch
does is to use the 12 volt battery to boot up the system, then the HV
battery spins one of the motor/generators to start the engine. The
engine doesn't have a starter, you see?
The push on/off approach uses a solid state latching relay in the old
app of switching high currents with a low current switch. It boils down
to a toggled flip-flop and a few AND gates driving a high current
device. Nothing new there. Shoot, a solenoid operated operated
starting motor is an electromechanical version from days of yore.:-)
Funny thing is the evolution of the switching. The early cars had a
starter button. Then came the spring loaded ignition switch and now
some are using a starter button again. Amusing...........
CR
On 11/12/2019 11:19 AM, Max Heim via Mgs wrote:
> As an interface designer, I am puzzled by the â??push for onâ?? solution.
> It seems somehow inappropriate as well as unnecessarily complex.
>
> Overdrive seems to me to be a function where a clear on/off toggle is
> the natural mode of engagement. Sometimes I want it on, sometimes off,
> and I want to know which mode it is in.
>
> But then, I think the â??start buttonâ?? on modern cars is idiotic. So YMMV.
>
> --
> Max Heim
> '66 MGB
>
>> On Nov 12, 2019, at 5:43 AM, Charley Robinson <Charley38@twc.com
>>
>> I have a neat little module that does as you describe except it has
>> no warning light. It is plugged into the wiring between the manual
>> OD switch and the transmission switches. In the case of my CBB it's
>> sitting on the shelf on the passenger side of the heater box. It's
>> all solid state, has never given me any trouble. Â I bought the thing
>> on line a few years ago but I don't remember the name of the seller.Â
>> I absolutely love the thing!
>>
>> CR
>>
>> On 11/12/2019 2:26 AM, PaulHunt73 via Mgs wrote:
>>> 
>>> I got fed up with OD auto-engaging as I changed from 2nd to 3rd so
>>> built a circuit that once out of an OD gear, it locked it out
>>> semi-permanently until I turned the manual switch off and back on
>>> again. That has a warning light to say it has been locked out,
>>> rather than one to say it is engaged. More info
>>> herehttp://www.mgb-stuff.org.uk/gearstext.htm#sequencer
>>> PaulH.
>>
>>
>
>
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>
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I drive a Prius which has a "push on, push off" switch. What the
switch does is to use the 12 volt battery to boot up the system,
then the HV battery spins one of the motor/generators to start the
engine. The engine doesn't have a starter, you see?<br>
<br>
The push on/off approach uses a solid state latching relay in the
old app of switching high currents with a low current switch. It
boils down to a toggled flip-flop and a few AND gates driving a high
current device. Nothing new there. Shoot, a solenoid operated
operated starting motor is an electromechanical version from days of
yore.<span class="moz-smiley-s1"><span>:-)</span></span><br>
<br>
Funny thing is the evolution of the switching. The early cars had a
starter button. Then came the spring loaded ignition switch and now
some are using a starter button again. Amusing...........<br>
<br>
CR<br>
<br>
<div class="moz-cite-prefix">On 11/12/2019 11:19 AM, Max Heim via
Mgs wrote:<br>
</div>
<blockquote type="cite"
cite="mid:FCA75FE2-C7FE-4ED9-B75F-D90D3A6F616D@sonic.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
As an interface designer, I am puzzled by the â??push for onâ??
solution. It seems somehow inappropriate as well as unnecessarily
complex.
<div class=""><br class="">
</div>
<div class="">Overdrive seems to me to be a function where a clear
on/off toggle is the natural mode of engagement. Sometimes I
want it on, sometimes off, and I want to know which mode it is
in.</div>
<div class=""><br class="">
</div>
<div class="">But then, I think the â??start buttonâ?? on modern cars
is idiotic. So YMMV.</div>
<div class=""><br class="">
<div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap: break-word;
-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; word-wrap: break-word;
-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;" class="">
<div style="margin: 0px; font-size: 13px;" class="">--</div>
<div style="margin: 0px; font-size: 13px; min-height:
16px;" class="">Max Heim</div>
<div style="margin: 0px; font-size: 13px;" class="">'66
MGB</div>
</div>
</div>
</div>
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On Nov 12, 2019, at 5:43 AM, Charley Robinson
<<a href="mailto:Charley38@twc.com"; class=""
moz-do-not-send="true">Charley38@twc.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class=""><span style="font-family: Verdana; font-size:
12px; font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); float: none; display: inline
!important;" class="">I have a neat little module that
does as you describe except it has no warning light. It
is plugged into the wiring between the manual OD switch
and the transmission switches. In the case of my CBB
it's sitting on the shelf on the passenger side of the
heater box. It's all solid state, has never given me
any trouble. Â I bought the thing on line a few years
ago but I don't remember the name of the seller. I
absolutely love the thing!</span><br style="font-family:
Verdana; font-size: 12px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);" class="">
<br style="font-family: Verdana; font-size: 12px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255);" class="">
<span style="font-family: Verdana; font-size: 12px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); float: none; display: inline
!important;" class="">CR</span><br style="font-family:
Verdana; font-size: 12px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);" class="">
<br style="font-family: Verdana; font-size: 12px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255);" class="">
<div class="moz-cite-prefix" style="font-family: Verdana;
font-size: 12px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255);">On 11/12/2019 2:26 AM, PaulHunt73
via Mgs wrote:<br class="">
</div>
<blockquote type="cite"
cite="mid:1F04728A8D77449F8EA64CEC088B45AB@paul"
style="font-family: Verdana; font-size: 12px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255);" class="">
<div class=""><font class="" size="2">I got fed up with
OD auto-engaging as I changed from 2nd to 3rd so
built a circuit that once out of an OD gear, it
locked it out semi-permanently until I turned the
manual switch off and back on again. That has a
warning light to say it has been locked out, rather
than one to say it is engaged. More info here<span
class="Apple-converted-space">Â </span><a
href="http://www.mgb-stuff.org.uk/gearstext.htm#sequencer";
moz-do-not-send="true"
class="">http://www.mgb-stuff.org.uk/gearstext.htm#sequencer</a></font></div>
<div class="">Â </div>
<font class="" size="2">PaulH.</font><br class="">
</blockquote>
<br style="font-family: Verdana; font-size: 12px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255);" class="">
<br class="Apple-interchange-newline">
</div>
</blockquote>
</div>
<br class="">
</div>
<br>
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<pre class="moz-quote-pre"
wrap="">_______________________________________________
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