MW transmitter using NE555 timer chip

MW transmitter using

NE555 timer chip

Using comments NE555 timer chip 330 ohms, 1K ohms resistance 0.001uF capacitor

Condenser mic and 9V DC power supply.

Power supply :- Using supply only DC stable you can use 9Volt battery and smps supply
And mobile adaptor unfortunately it is no
9Volt but approx 7V max.

NE555 timer chip :- This chip number 1 pin Ground, pin 2 Trigger, pin 3 Output,Pin 4 reset, pin 5 Cout, pin 6 Three, pin 7 discharge, pin 8 VCC. Important notice this chip you cannot supply voltage 9 volt up otherwise timer cheap was burning.
This chip integrated 2 op-amp or 1 SR flip-flop or one NPN transistor and voltage divider. Supply voltage minimum 4 volt up and maximum 10 volt.
Capacitor :- Using capacitor 0.001uF this capacitor number 102.

You can used any condenser mic

MW frequency:- Medium wave is the part of the medium frequency radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with limited sound quality. During daytime, only local stations can be received.

Comments

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