Overloaded 1931 Transformer [Fried Electronics]

I’m working on a 1930/31 Westinghouse WR-8 Columnaire clock-radio which had a bad transformer. The filter capacitors failed and shorted the high-voltage secondary, burning it open and causing a lot of heat and melting.

 

The replacement is a General Electric service transformer from a Radiola 82, which shared the same chassis. Production revisions led to an improved design over the original, with a separate 2.5V winding for the #45 output tubes to reduce hum and the rest of the RF tubes on their own independent 2.5V winding, so the new transformer will offer a noticeable performance advantage over the original, too!

Advertisements
This entry was posted in DIY, Electronics, Projects, Radio, Vintage and tagged , , , , , , , , . Bookmark the permalink.

3 Responses to Overloaded 1931 Transformer [Fried Electronics]

  1. David DeRosier says:

    Your lucky you found a replacement.

  2. KF7PCL says:

    Looks like the magic genie came out. That’s never a good thing.

    And antique transformers aren’t too easy to get either.

    • jwk says:

      It’s a real challenge sometimes. It took me a couple months to source this transformer. I was nearly to the point of building a new power supply based on the specifications when the replacement transformer turned up.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s