RE: "Put a scope probe on the cathode pin of the power tube "

Posted by 1973shovel (A) on July 22, 2012 at 13:59:03

In Reply to: RE: "a 1 watt film resistor should do quite well" posted by Jim McShane on July 22, 2012 at 13:35:08:

I would do just that, Jim, if only I had one.

In my particular case, I'm bringing a pair of Dynaco MkIII 's out of a twenty-year storage. The guy I bought them from way back then set them up with dual-bias pots, and used 8.2 Ω 5 watt resistors on pin 8 of each 6550, simply because he had a shopping bag full of them from a ham fest.

With 10 Ω, it will be a lot easier to remember the bias setting, but I'd read about using the low wattage resistors specifically in posts about the MkIII. Since I already bought four 10 Ω 1/2 W Dales for them, I'll use them, and then move to one or two watt versions if they give me grief.

Thanks.

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Follow Ups Full Thread

Topic - I am shocked! - jedrider 16:31:58 07/21/12 (24)

RE: I am shocked! - griboon 17:00:52 08/13/12 (0)

Follow-up! - jedrider 11:32:59 08/13/12 (0)

Solution in sight! - jedrider 22:40:28 07/21/12 (12)

RE: Solution in sight! - drlowmu 23:01:50 07/21/12 (11)

Not a Happy Ending - jedrider 16:27:15 07/22/12 (7)

Sorry to hear it - 1973shovel 17:11:22 07/22/12 (5)

I'm looking for a Variac now - jedrider 07:48:11 07/24/12 (4)

RE: I'm looking for a Variac now - drlowmu 19:17:26 07/24/12 (3)

Calm down - jedrider 07:09:12 07/25/12 (2)

RE: Calm down - Tre' 19:30:27 07/26/12 (0)

Calmed - drlowmu 16:05:20 07/25/12 (0)

Sorry, but the fat lady ain't yet sung...... - drlowmu 17:03:27 07/22/12 (0)

RE: Solution in sight! - Jim McShane 11:21:59 07/22/12 (2)

RE: Solution in sight! - drlowmu 12:36:21 07/22/12 (1)

RE: Solution in sight! - Jim McShane 13:35:59 07/22/12 (0)

RE: I am shocked! - drlowmu 18:05:55 07/21/12 (2)

RE: I am shocked! - jedrider 18:42:34 07/21/12 (1)

Lift a LEG !!!@!!!!@!!! - drlowmu 18:52:31 07/21/12 (0)

RE: I am shocked! - Chris O 17:12:17 07/21/12 (5)

RE: I am shocked! - Jim McShane 11:26:39 07/22/12 (4)

RE: "a 1 watt film resistor should do quite well" - 1973shovel 12:29:16 07/22/12 (3)

RE: "a 1 watt film resistor should do quite well" - TimFox 12:30:37 07/26/12 (0)

RE: "a 1 watt film resistor should do quite well" - Jim McShane 13:35:08 07/22/12 (1)

RE: "Put a scope probe on the cathode pin of the power tube " - 1973shovel 13:59:03 07/22/12 (0)

Follow Ups

RE: "Put a scope probe on the cathode pin of the power tube " - 1973shovel 13:59:03 07/22/12 (0)

RE: "Put a scope probe on the cathode pin of the power tube "

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