Read Part 1 and Part 2 of this series. This article on FETs for voltage controlled circuits will cover FET modulator circuits and variable gain amplifier ...

This low-cost AM transmitter is tunable from 10 to 15 MHz with the help of ½J gang condenser VC1, which determines the carrier frequency of the amplitude modulation transmitter in conjunction with ...

Here we report a flexible all-graphene modulator circuit with the capability of encoding a carrier signal with quaternary digital information.

Renesas Electronics Corporation, a premier supplier of advanced semiconductor solutions, and Hitachi, Ltd. today announced a technology collaboration to enable continuous-time digital calibration ...

The upshot of this opera tion for use as a pulse-width-modulator circuit is an approximate triangle wave (Fig. 2). The triangle wave is employed as the input to op-amp U2.

Renesas and Hitachi collaborate to enable continuous-time digital calibration of a delta-sigma modulator and an A/D converter circuit for automotive ...