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Posts tagged Wireless

FM transmitter circuit

FM transmitter circuit Radio Wireless circuit using BC547 FM transmitter circuit radiate strong radio frequency to the environment

Making RF Switching for terror

When switching an antenna between a transmitter and receiver, the 1N914 or 1N4148 can still be used, but with decreasing success as the frequency rises. It is common practice in VHF transcievers to use a PN junction diode, but with a lightly doped “Intrinsic” region between the P and N layers. The diode is called […]

40W Audio Amplifier Circuit using STK465

40W Audio Amplifier Circuit using STK465

Earphone portable Circuit

Earphone portable Circuit using 1 transistor HEP 230 Portable 3v Headphone Amplifier

Determining the optimum PCB layout

One of the keys in determining the optimum printed circuit board layout is to understand how and where the signal return currents actually flow,  Most designers only think about where the signal current flows  and ignore the path taken by the return current. we must understand how the high frequency current flows in a conductor. […]

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