Antenna Booster for FM, AM, and SW Receiver

This AM/FM antenna booster circuit amplify the broadband signal from antenna. This antenna booster should work fro FM, AM, and SW receivers. Here is the schematic diagram of the circuit: Using this antenna booster circuit, for short wave reception, an 8″ antenna would produce a strong signal level equivalent to a 20 to 30 feet wire antenna. This antenna booster […]

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Pulse Position Modulator Using 555 IC

Pulse position modulation is similar to pulse width modulation, but the frequency is not constant.  Like pulse width modulator circuit, pulse position modulator can be easily constructed using 555 IC.  Here is the schematic diagram of the circuit: If you look at the output signal plot in the above timing chart, and compare it with our previous pulse width modulation, […]

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