Re: ?- How high SWR before smoke? - 6146
Hi Alison,toggle quoted messageShow quoted text
I like to have a robust power supply. A homebrewed RF power amp with a 6146 suffered a fractured resistor that removed the grid bias. I heard the plate current meter hit the stop immediately followed by a crinkle sound from the tube and then the fuse blew. There was a melted place in the plate and the screen was *gone*. There was not even a little sigh from the power supply. Yes, tubes can be destroyed from those same things (even it takes more).
On 07/06/2018 12:40 PM, ajparent1/KB1GMX wrote:
bark less - wag more