Not a fusing problem. Wire corrodes and opens in time from material used in construction. This is very common with older audio interstage transformers. Shouldn't be a problem with modern replacements.
Norm
:Hello, I have a few radios that I replaced the interstage transformers due to open transformers. What causes this?..is there a way to fuse or protect these? maybe an inline cap on both sides?
:Hi Sean
:
: Not a fusing problem. Wire corrodes and opens in time from material used in construction. This is very common with older audio interstage transformers. Shouldn't be a problem with modern replacements.
:
:Norm
:
::Hello, I have a few radios that I replaced the interstage transformers due to open transformers. What causes this?..is there a way to fuse or protect these? maybe an inline cap on both sides?
There may be some cases of tubes shorting and causing an audio interstyage to blow but not many. Audio interstage transformers are high resistance. With high resistance even a shorted tube won't draw a lot of current. The secondary has almost no voltage as it goes to grid of a tube. This side is open just as often as the primary side, side with plate voltage.
Norm
:Hello, even in a philco model 20? I have heard that the tubes can short and cause the transformer to blow.
:
::Hi Sean
::
:: Not a fusing problem. Wire corrodes and opens in time from material used in construction. This is very common with older audio interstage transformers. Shouldn't be a problem with modern replacements.
::
::Norm
::
:::Hello, I have a few radios that I replaced the interstage transformers due to open transformers. What causes this?..is there a way to fuse or protect these? maybe an inline cap on both sides?