DiscoverCircuits.com, has 27,000+ electronic circuits. The electronic schematics
are carefully cross-referenced into 500+ categories. As a vital resource for engineers, hobbyists, inventors & consultants, the site's collection of information
will help you find quick design ideas to electronic design problems.
Modulators Circuits Page 2 Modulators: #-EF-LM-NO-PQ-Z Last Updated on:
Wednesday, December 31, 2008 03:16 PM
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
FM Beacon Transmitter (88 108 MHz): This circuit will transmit a continuous audio tone on the FM broadcast band (88-108
MHz) which could used for remote control or security purposes. Circuit draws about30 mA from a 6-9 volt battery and can be received to about100 yards.
Grounding for Low-and-High-Frequency Circuits: AN-345 - Analog Devices Application Notes (app note added 6/06)Know
Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
Improved frequency modulator uses negatron: 07/11/02 EDN Design Ideas / (added 1/05) You can improve a
capacitive-sensor circuit with a modulator and an RF transmitter (Reference 1) by modifying the modulator portion to obtain better accuracy. More improvements result from adding a "negatron"
circuit, a configuration that uses equivalent negative capacitance. Reference 2 gives some insight into the uses of negative impedance....
KD2BD ATV AM Video Modulator: video signal processing circuit that allows adjustment of video gain, video bias, sync and
sync level (Electronic Schematic / circuit added 4/02)
Copyright 2002 - 2009 David A. Johnson & Associates. All Rights reserved to the contents & graphics of Discovercircuits.com
Linking is welcomed but COPYING any content or graphics to your web site is expressly prohibited.
