Page 5, Links to Modulator Electronic Circuits

Modulators Circuits Page 5
Modulators: #'s A C - D E - F G - L M N - O P - R S T - V
Last Updated on: Monday, October 03, 2011 06:07 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Green Current Mode PWM Controller FAN7601/ AN-4129 - Fairchild Application Notes / (app note added 6/06)

H-Bridge with PWM - This circuit drives a motor clockwise / anticlockwise via a pot and reduces the speed to zero when the pot is in mid-position....

Heater Fan Controller - This device acts as a variable speed control for the heater blower in a car. It takes its power directly from the existing wiring and connects with just 2 wires…. [Luhan Monat - Mesa Arizona]

High Performance FM Receiver for Audio & Digital - (circuit / schematic design added 6/06)

High Power FM Microphone FM Bug - My FM Wireless Microphone has been a very popular project with beginners and experienced constructors alike. It has been used inside guitars and as the basis of a remote control system. …. [from Harry Lythall's website]

High side PWM Motor/Light Controller - These two schematics are variations on another PWM circuit that I designed. The diagrams are for 12V operation only and there are high side (common ground) and low side (common +12V)....[Circuit Designed by G. Forrest Cook]

Improved FM Stereo Modulator - (electronic circuit added 7/03)

Improved frequency modulator uses "negatron" - 11-Jul-02 Issue of EDN You can improve a capacitive-sensor circuit with a modulator and an RF transmitter (Reference 1] by modifying the modulator portion to obtain better accuracyimprovements result from adding a "negatron" circuit, a configuration that uses equivalent negative capacitance. Reference 2 gives some insight into the uses of negative impedance....[Design Idea by Alexander Bell, Infosoft International, Rego Park, NY]

Jitter Modulator - (electronic circuit added 08/08/08)

KD2BD ATV AM Video Modulator - video signal processing circuit that allows adjustment of video gain, video bias, sync and sync level (added 4/02)

Leverage PWM output & add a low-cost DAC to your system - 07/19/07 Video Design Ideas-EDN Bonnie Baker, senior applications engineer at Texas Instruments and regular EDN columnist, demonstrates a simple way to add DAC functionality to a microcontroller-based system using only an op amp and two passive components. (electronic Design Idea added 9/08] EDN is migrating links. This link is not verified. Google the "title" EDN for new link.

Light Controller High Side - Diagrams are for12V operation and there are high side (common ground) and low side (common +12V) versions…. [Designed by G. Forrest Cook]

Light Controller Low Side - Diagrams are for12V operation and there are high side (common ground) and low side (common +12V) versions…. [Designed by G. Forrest Cook]

Limiting Amplifier Forms AM Modulator - 12/07/95 EDN-Design Ideas....EDN is migrating links. This link is not verified. Search the "title" + "EDN" for new link.

LM2889 RF Modulator - National Semiconductor Application Note (app note added 2/06)

LM324 Pulse Width Modulator - Schematic only, no circuits description…. [Tony van Roon's circuit]

Low Power FM Transmitter - Useful to retransmit the hi-fi to another FM receiver nearby, or as a wireless mic (electronic design added 9/02)

Low side PWM Motor/Light Controller - These two schematics are variations on another PWM circuit that I designed. The diagrams are for 12V operation only and there are high side (common ground) and low side (common +12V) versions. The low side version of the circuit uses an N Channel FET, the high side version of the circuit uses a P Channel FET. N Channel devices tend to handle more current than P Channel devices, they are also less expensive. The high side version of the circuit is useful when one side of the load has to be grounded....[Circuit Designed by G. Forrest Cook]

Modulators: #'s A C - D E - F G - L M N - O P - R S T - V