[Photo] Transmitter circuit of cordless telephone

The circuit consists of a frequency-modulated oscillator, a frequency multiplier, an exciter, and a resonance power amplifier. The frequency doubling is determined by the nominal frequency of the crystal and the center frequency of the emission. The crystal frequency of the crystal oscillator of this circuit is 18.667MHz, and the transmission frequency is 112MHz (this frequency corresponds to the receiving center frequency of the SN739 station), so the formula is taken

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Cordless telephone transmitter circuit

Posted at 2006-04-16 19:21 • 249 views
Cordless telephone transmitter circuit
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