[GreenKeys] Loop supply options

[Jeffrey Angus]

On 9/9/19 11:44 AM, Jim Cooper wrote:
> On 9 Sep 2019 at 10:52, Jeffrey Angus wrote:
>
>> At the point the loop is placed in the Mark condition, the full
>> voltage of the loop supply is placed across the selector magnets.
> did you mean to say SPACE condition?
>
> in mark condition, current is flowing and
> there will be a big voltage drop across the
> limit resistor and only the
> I squared * R(of selector magnet coil) voltage
> will  be across the selector magnet.
>
> on space condition (open circuit) there will
> be no voltage drop across the limit resistor,
> and so the full p/s voltage will be across
> the circuit.
When in the space condition, the loop is open.
The full voltage of the loop supply will be across the
loop contacts.
With zero current, there will be zero voltage across
any of the resistors or coils.


-- 
"I am a river to my people."
Jeff-1.0
WA6FWI
www.foxsmercantile.com

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