In Denmark in 1923, an oscillograph light modulator and selenium-cell reproducer were developed. |
The magnetic reproducer, called a penthouse, is mounted above the projector. |
A major difficulty turned out to be the securing of constant speed in both the recorder and reproducer. |
Or suddenly it did not find how to recharge its digital reproducer in the middle of a stroll. |
In Fig. 151c the construction of the gramophone reproducer is shown in section. |
The assumption of responsibility of this reproducer was shared between Lestelle and Igon. |