Telex PS-15 Power Supply for TW Intercom Systems
The Model PS 15 Power Supply is designed to work within the TW Intercom System. The PS 15 is suitable for small to medium sized TW Intercom Systems.
The unit is self-contained and features two-channel operation: one "wet" channel with 24 to 32 volts DC and one "dry" channel without voltage potential. Each channel provides an audio termination impedance of 200 or 400 ohms (switch selectable).
This power supply allows speech signals and DC to exist on the same wire (Channel I). The power supply's outputs are protected against short circuit conditions with recovery being automatic and instantaneous. A single PS 15 Power Supply can power 6 to 30 user stations (depending on model and combination -see specifications).
If still more user stations are needed, two PS 15 Power Supplies can be coupled together to double the powering capability: a 1/4-inch 3-circuit phone jack is available on each power supply for this purpose. This connector can also be used as a one-way output port when monitoring or recording the intercom audio signals.
