Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
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Filter Circuits - Active Frequency Counters 
Filter Circuits - Passive Frequency Divider Circuits   
Fire Alarm Circuits   Frequency Doublers
Fire / Flame Detectors Frequency Modulator (FM) Circuits
Flashers and Blinkers    Frequency Meters / Monitors 
Flip / Flop Circuits    Frequency Multipliers
Flyback Circuits   Frequency Shift (FSK) Circuits
Flow Detector / Meters Frequency Synthesizer Circuits
Fluid Level Monitors   Frequency to Voltage Converters
Fluorescent Lamp Circuits     Frost / Freeze Alarm
FM (Frequency Modulation) Circuits  Function Generators  
FM Receiver Circuits  
FM Transmitter Circuits 
Follower (Voltage) Circuits  
FAX Circuits Four-quadrant Multiplier Circuits
FET Circuits   Freespace Communications   
Fiber Optic Circuits   Freezer Alarm   
Field Strength Meters   Frequency Converters

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Gadget Circuits Ground Current Monitors  

Game Circuits   Ground-Fault Interrupter (GFI)
Gas Detectors Gyrator Circuits
Gate Arrays   Gyroscope Circuits    
Geiger Counter Circuits  
Geophone Circuits  
GPS (Global Positioning Systems)
   

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H-Bridge Circuits High-Pass Filters - Active Horse Power Meters  
Hall Effect Circuits High-Pass Filters - Passive Hour Meters
Hartley Oscillator   High Speed / Frequency  Circuits Human Motion Detectors
Headphones High Voltage Generators Human Proximity Detectors
High Gain Amplifiers   High Voltage Monitors Human Touch Detectors
High Impedance Circuits   Holiday Circuits     Humidity Sensors and Monitors

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