Happy holidays to all. I am putting together a ST70, and a pair of MK3s. Can someone please suggest the correct wattage for the 10 ohm bias sensing resistors?Thanks in advance for the guidance.
2 posters
Wattage of 10 ohm bias sensing resistors.
Viridian2- Posts : 2
Join date : 2023-12-09
peterh- Posts : 1869
Join date : 2012-12-25
Location : gothenburg, sweden
Viridian2 wrote:Happy holidays to all. I am putting together a ST70, and a pair of MK3s. Can someone please suggest the correct wattage for the 10 ohm bias sensing resistors?Thanks in advance for the guidance.
1/4 w will do just fine. They have a dual function : be something to measure voltage across ( your bias setting) and "blow off" in case if flash over in a tube. This blow off will protect output transformer in case of a shorted or flash over tube.
( 0.5v x 50mA = 0.025w )
Viridian2- Posts : 2
Join date : 2023-12-09
Mr. H, thanks very much for the guidance. Exactly why I asked, had a feeling they had a fuse type function as well. Off to Mouser to book my order. Thanks again.