Jump to content

Calculating transformer winding impedance

THX-1138
in Equipment

Featured Replies

Suppose I want to run a normal low-voltage transformer in reverse -- i.e., running the line voltage through the secondary winding of a filament transformer. The load will generally be negligible, but maybe not. How can I determine whether the transformer can handle this? From the gauge and secondary rating I can make a guess how much current the winding is intended to handle, but I don't know if Ohm's law applies here.

 

Example: For a 120VAC transformer with a secondary winding rated at 28VAC/2.8A, is the winding's impedance 10[math]\Omega[/math]?

 

Thanks!

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.