re telephone on hook off hok ok circuit in article ptolq p e werple apana org au petert zikzak apana org au peter t writes since an on hook line is aprox v and off hook it usually drops below v how about an led in series with a zener say around v on hook led on off hook led off would this work if anyone tries tried it please let me know not recommended your circuit would take too much current when telephone is on hook telephone company does not like it tomi engdahl hut fi lowery s law then niksula hut fi if it jams force it if it breaks it needed replacing anyway this text is provided as is without any express or implied warranty
