<p dir="ltr">My neighbour's mobility scooter has a forward-reverse switch, so I assume it is a uni-directional controller.</p>
<p dir="ltr">Cost suggests one power FET rather than 4...</p>
<div class="gmail_quote">On Dec 14, 2014 12:13 AM, "Robin Gilks" <<a href="mailto:robin@gilks.org">robin@gilks.org</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings all<br>
<br>
Something for you all to think on before Monday - do cheap Chinese scooter<br>
controllers (irrespective on how they rate power capability) have reverse<br>
(i.e. a bridge) or are they in the main just series FETs. Most seem to be<br>
advertised as scooter/ebike controllers - and a bike doesn't need to go<br>
backwards!!<br>
<br>
Those that I used to have access to used a 0-5 volt signal with 2.5 being<br>
stopped, 0 as full reverse and 5 as full speed forward. I can probably get<br>
a couple of these but 10 bucks to china is much cheaper although I doubt<br>
I'll see anything this side of Xmas!<br>
<br>
Cheers<br>
<br>
--<br>
Robin Gilks<br>
<br>
<br>
<br>
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