[GreenKeys] Trying again

[David Wade]

On 25/09/2026 17:35, Jim Cooper via GreenKeys wrote:
> On 25 Sep 2026 at 10:16, hwhall--- via GreenKeys wrote:
>
>> Then try setting it up with the Rectifier
>> supply for loop current & try running the TG-7 to see if keyboard
>> inputs are correctly printed.
> BUT remember that you will need approx. 2000 ohm
> high-wattage resistor in series with the Rectifier loop,
> to limit the loop current to 60mA ...  otherwise you will
> cook the selector magnet coils rather quickly.
Thats another reason for using the loop supply in the decoder. I 
understand it has in-built current limiting....
.. which would also avoid the hazards from a failing selenium rectifier 
as found in the rectifier unit.
does any one still use these?

> w2jc
Dave
G4UGM