14-06-2022, 03:53 PM
(This post was last modified: 14-06-2022, 03:54 PM by ppppenguin.)
For ordinary radios if you stick a 30:1 transformer in a circuit that needs 60:1 or vice versa it's most unlikely to do any harm. The worst that will happen is that it will be less loud than you might expect, or there might be more distortion.
For high quality amplifiers it does matter, though you're still unlikely to do harm. For sets with feedback or hum cancelling windings it's a lot trickier. You'll need to get close to the original.
If you try a transformer designed for push-pull in a single ended circuit it will probably saturate due to the DC and sound horrible.
If you try a mains transformer it may work but will tend to saturate in a single ended design. Its frequency response may leave a lot to be desired. But you still won't do any harm.
So try what's to hand. If it works well enough to sound OK then you've got a result.
For high quality amplifiers it does matter, though you're still unlikely to do harm. For sets with feedback or hum cancelling windings it's a lot trickier. You'll need to get close to the original.
If you try a transformer designed for push-pull in a single ended circuit it will probably saturate due to the DC and sound horrible.
If you try a mains transformer it may work but will tend to saturate in a single ended design. Its frequency response may leave a lot to be desired. But you still won't do any harm.
So try what's to hand. If it works well enough to sound OK then you've got a result.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
