| It’s often the small, everyday things that turn out to have interesting features when you examine them more closely. In any case, here you c...
All items tagged with DC and phone (3)
| elektor July/august 1985 Microphones, unfortunately, produce onlyasmallsignalandthey,therefore, require a special pre-amplifier to boost the...
| 12-40 — elektor december 1982 home telephone help used (see figure la) may differ depending on the type of tele- phone in use. If your sys...