In article ,
S (Whunicut) wrote:

I think Hobbs meter winding coil's draw a good bit of current every 30
seconds or so in the wind cycle, maybe a 2 or 3 millisecond pulse.

Seems I remember then having a wide operational voltage range, like 4 to
40V or something like that... I'm talking about the old mechanical ones
here, not the newer Quartz or digital's.

Erik

Well, this is certainly the old mechanical type. Probably a dumb question but
here goes. If it just spikes from 4 to 4o volts every 3 minutes or so, why do
I
have to do anything? Wouldn`t 12 volts work?

Also, the papers that came with it mention models without the instant stop
feature would run on for up to 3 minutes after being turned off.
Verifies your statement above.

Warren

Hmmm... it just draws a brief pulse of current periodically when it
winds, and the rest of the time is electrically 'dormant'.

What I meant, is I 'think' they (or some models anyway) were ok for use
with a supply voltage in the range of 4 to 40 Volts... or some big range
like that. I wouldn't bet my life on it though.

I bet you could Google up info about your particular model...

Funny, I had an old (NOS, less than an hour total time showing) square
Hobbs meter someone gave me years ago.... sold it on eBay in the last
year or so. Got a lot of bids on it too. I had some GREAT, super sharp
macro photos in the ad... it really makes a difference.

Good Luck!

Erik