Shattersignal
Well-known member
Hi all! I'm building some RCA BA-2C mic preamps. I'm speaking with Cinemag, who will be building the gapped output transformers for the project. They need to know how much current will be passing through the primary of the OT so that we can gap it as little as possible. The output tube is a 6J7. I'm not sure what the plate voltage is supposed to be, but it's something around 200vdc.
Here are my questions:
--How would I go about calculating the current flow through the primary? I am familiar with Ohm's law, but I'm not really sure how to piece together the values that I'd need to perform the algebra.
--Does anyone have any special advice for this build regarding the spec' of the OT for a BA-2C, in particular? I want to get as many Henries as possible.
Thanks a ton! I've learned a ton from this community and I always greatly appreciate those who have taken the time to assist me!
Here are my questions:
--How would I go about calculating the current flow through the primary? I am familiar with Ohm's law, but I'm not really sure how to piece together the values that I'd need to perform the algebra.
--Does anyone have any special advice for this build regarding the spec' of the OT for a BA-2C, in particular? I want to get as many Henries as possible.
Thanks a ton! I've learned a ton from this community and I always greatly appreciate those who have taken the time to assist me!