FM Radio Station Mute Function Part 14

Radio Station mute function schematic

FM RADIO STATION MUTE FUNCTION PART 14

This circuit shows details for adding a mute function to the FM radio station. A switch will mute the microphone. When muted, the LED will stay lit.


Microphone Mute Function with LED monitor
When the DPDT switch is in a normalized position, the electret microphone is active, the LED is not connected, and broadcast takes place. When switched, the microphone cuts out, resistor R2 is connected to replace the microphone, and the LED lights. A carrier signal continues to broadcast but there is no sound. The LED is on a separate circuit and does not interfere with the microphone. The microphone resistance is measured at 1.37 ohms (when not in the circuit).

Note: On the schematic, replace the text SPDT with DPDT.

http://humanoidolabs.blogspot.tw/2013/12/fm-radio-station-controls.html

FM Radio Station Part 5 Index
http://humanoidolabs.blogspot.tw/2013/12/fm-radio-station-part-5-index.html 

Brain Cortex Update Part 14

BRAIN CORTEX UPDATE
PART 14
IT'S BEEN A LONG TIME COMING...

Cortex status on Saturday November 2nd, 2013

Humanoido Laboratories is constructing a living machine brain cortex that is designed to autonomously stay alive and live into the future.

The cortex is designed to hold a human-to-machine brain transfer of some simple characteristics and give these characteristics a life span exceeding human longevity.

The experiment also will conduct a human-to-machine mind transfer in a very simple but effective way.

Brain Cortex Index Part 16