Electronic Circuits and Tutorials
Electronics Schematics - P

Phase Shift Keying (PKS) Circuits

Robust, low-cost continuous phase FSK modulator: 01/12/98 Electronic Design - Ideas for Design. In bandpass data transmission, one common way to design low-cost frequency-shift-keying (FSK) analog modulators is to use two independent oscillators that have outputs switched according to the binary input wave to be modulated.

ST6 - UNIVERSAL MOTOR CONTROL EVALUATION BOARD: The UMC01EVAL Evaluation Board is designed for a very low-cost phase control system based on the 8-bit ST62T00C microcontroller. It can be used to control a universal motor powered by a 230 V / 50 Hz mains supply.

Variable-capacitance diode phase modulator: 10/01/98 Electronic Design - Ideas for Design /  This circuit varies the phase between two square waves through at least 180°. This capability finds application in fixed-frequency, phase shift, resonant-mode converters. ICs such as the UC3875 usually only work up to about 500 kHz.

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