plouf
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Hi
while searching for some telphone circuits i come across this article -> https://en.wikipedia.org/wiki/Line_isolation_transformer
it claims that "wet" type transformer can pass DC, therefore you can detect on/off hook ?
since i never come across this, is this true ? if yes does anyone knows ANY "wet" transformer type to buy from anywhere that can DC pass ? (without extra components)
while searching for some telphone circuits i come across this article -> https://en.wikipedia.org/wiki/Line_isolation_transformer
it claims that "wet" type transformer can pass DC, therefore you can detect on/off hook ?
since i never come across this, is this true ? if yes does anyone knows ANY "wet" transformer type to buy from anywhere that can DC pass ? (without extra components)