WK20 - 20W Power Amplifier
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Revision as of 09:53, 6 August 2007 by 10.5.101.111 (talk) (New page: ==Power Amplier 1000614100== ===Features=== * Output for 1 amplified loudspeaker * Output level control. ===Description=== The schematics for the board are in Chapter 23 from page 273 onwa...)
Power Amplier 1000614100
Features
- Output for 1 amplified loudspeaker
- Output level control.
Description
The schematics for the board are in Chapter 23 from page 273 onwards.
The board contains a power amplifier, a potentiometer for adjusting the output volume and an input for switching the amplifier on/off.
The symetrical input is matched to the output level on the subscriver board in the AlphaCom exchange.
The amplifier may be constantly on, or switched on and off by the M-key on the calling station. It is recommended that power to the amplifier board is supplied from a separate class II transformer. <br\> In the AlphaCom exchange, brackets must be mounted on the board, in order to fasten to the mounting rail.