[Elecraft] K3 Key Out line

[Wayne Burdick]

Hi Phil,

Key out is driven by a very rugged N-channel MOSFET.

73,
Wayne
N6KR

On Dec 23, 2009, at 9:01 AM, Phil Hystad wrote:

> I noticed from the documentation that the K3 Key out line can handle  
> up to 200 VDC and 5 amps.  I assume this means that when the key out  
> is closed that it can handle 5 amps of current.
>
> So, I am curious, what kind of switch mechanism is used for TR  
> switching.  Is this an actual relay or is it some kind of transistor  
> switch.  I am guessing transistor based switch but this is where I  
> started wondering about the 200 VDC and 5 amp capability thing.