MAKE A MEME
View Large Image
| View Original: | Snitt_genom_en_Western_electrics_kolkornsmikrofon_med_dubbelsidigt_verkande_membran,_Nordisk_familjebok.png (919x685) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Snitt genom en Western electrics kolkornsmikrofon med dubbelsidigt verkande membran, Nordisk familjebok.png From http //runeberg org/nfcr/0059 html Description Section diagram of Western Electric double-button carbon microphone from Nordisk familjebok Developed around 1921 it was widely used for radio broadcasting and recording in the 1920s and 30s It consists of a duralumin diaphragm A with button cells containing carbon granules C attached to each side in the center Electric current from a battery flowed through the carbon so when sound waves vibrated the diaphragm it compressed and decompressed the carbon changing its conductivity and thus the current The two carbon buttons were connected to either side of a center-tapped audio transformer which cancelled the even-order harmonic distortion from the carbon The stretched diaphragm had a high resonant frequency and an air chamber provided damping flattening the frequency response PD-Ugglan Carbon microphones Telephone microphones Microphone schemas Microphones constructions Western Electric microphones | ||||
