[simpits-tech] Driving Synchros - Here is what I found...

[Marv De Beque]

Yup, that's the one and you are right.

I checked Erwin's driver he found and the 3-gauge version would work.  
Unfortunately, the 2nd and 3rd gauge drivers are useless since they only 
drive +/- 45 degrees and not 360.

Marv

On Friday, April 5, 2002, at 12:57 PM, Gene Buckle wrote:

>> No, but maybe you could get a job at their Redmond plant.  ;-)
>>
>> I checked the Scot synchro and it is actually called an indicator.  I
>> just wonder ho many gauges really use these to drive the needle?
>>
> AFAIK, the Scot unit *may* be an air-core motor and NOT a synchro.  I 
> know
> they made the air-core motor that's in one of Martin's F-16 instruments.
> The device is a "normal" air-core motor that could easily be driven with
> that Philips chip that Erwin found, but the draw on it (if memory 
> serves)
> is 147mA and the most current that those air-core driver chips can sink 
> is
> under 80mA.  (Also, the Scot air-core motors are $250 a pop in small 
> qty)
> The Scot device I looked at for Martin was either a 3 or 4 wire device.
>
> g.
>
>
>
>
>> On Friday, April 5, 2002, at 10:15 AM, Gene Buckle wrote:
>>
>>>> I found this Air Core Driver, it produces the needed SIN/COS signals.
>>>>
>>>
>>> Unfortunately as far as I know, a synchro is strictly an AC device.
>>>
>>> Marv, does Honeywell have a surplus store?
>>>
>>> g.
>>>
>>>
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