Circuit - Circuits designed by David A. Johnson, P.E.


	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.

Web	www.discovercircuits.com

HOME

Schematics

Discover Forum

Hobby Corner

Dave's Circuits

Electronic Resources

Book Corner

Contact Info

Discover Solar Energy

Imagineering Ezine

Dave Johnson & Associates

Dave's Circuits -- Category List
Last Updated on: Monday, January 05, 2009 03:48 AM

Please check out our 2009 Media Kit to see if placing an ad is right for you.

AC Power Control
AC to AC Converters
AC to AC Power Supply
AC to DC Power Supply
Active Filters: Band Pass
Active Filters: High Pass
Active Filters: Low Pass
Active Filters: Notch
Acquisition / Data Logging
Amplifier: Buffers
Amplifier: High Frequency
Amplifier: High Impedance
Amplifier: High Speed
Amplifier: Low Noise
Amplifier: RF (Radio Frequency)
Amplifier: Transimpedance
Amplifier: Wide Band
Alarm
Annunciator
Astable Oscillator

Audio Accessories
Audio Amplifiers
Audio Oscillator
Automotive

Band Pass Active Filters
Battery Chargers
Battery Monitor
Battery Tester
Beepers & Buzzers
Bistable Multivibrator
Blinkers
Buffer Amplifiers
Burglar

Capacitance Touch Switch
Capacitance Sensors
Charge Pump

Clock
Comparator
Crystal Oscillators
Control
Constant Current
Converters: Current to Voltage
Converters: DC to DC
Converters: Frequency-Voltage
Converters: Period to Voltage
Converters: Sine-Square Wave
Converters: Switchmode
Converters: Voltage
Converters: Voltage-Frequency
Counters & Timers
Current to Voltage Converters
Current Loop
Current Monitors
Current Source

Data Logging / Acquisition
DC to DC Power Supplies
Delay
Digital
Displays
Driver
Discriminator
Display
Doorbell

FET
Fiber Optic
Flashers & Blinkers
Flip / Flop
Fluid Level Detectors
Fluorescent Light
Freespace Communication
Freezer / Frost Alarm
Frequency Dividers
Frequency-Voltage Converters

Gadgets
Geophones

H-Bridge
High Frequency Amplifiers
High Impedance Amplifier
High Pass Active Filters
High Speed Amplifiers
High Voltage Power Supplies
Hour Meter
Human Motion Monitors

Indicator
Infrared
Inverters

Lamp / Lighting Controls
Laser
Latch
LED (Light Emitting Diode)
Light Beam Communication
Light Dependent Resistors
Light Detectors
Light Flashing
Limiter
Low Noise Amplifiers
Low Pass Active Filters

Microphone
Micro Power
Miscellaneous
Models
Moisture Sensors
Monostable
MOSFET
Motion Detectors
Motor Controls
Multivibrator

Noise Generators
Notch Active Filters

One Shot
Opto Coupler Circuits
Opto-Isolator
Optical Sensors

Oscillators: Astable
Oscillators: Audio
Oscillators: Crystal
Oscillators: Radio Frequency
Oscillators: Sine Wave
Oscillators: Square Wave
Oscillators: Triangle Wave
Oscillators: Voltage Controlled
Over Temperature Monitors

PWM
Peak Detectors
Pedometers
Period to Voltage Converters
Pink Noise Generation
Piezoelectric
Photography
Photo Flash

Position Detectors
Potentiometer
Power Control
Power Failure
Power Line
Power Supplies: AC to AC
Power Supplies: AC to DC
Power Supplies: DC to AC
Power Supplies: DC to DC
Power Supplies: High Voltage
Power Supplies: Switchmode
Power Supplies: Variable
Probes
Protection
Pulse Generation
Pulse Width Modulators
Push Pull

RFID
Radio Frequency Amplifiers
Radio Frequency Detectors
Radio Frequency Oscillators
Radio Frequency Receivers
Radio Frequency Transmitters
Receiver
Rectifier
Relay
Remote Control
Resistance Meters
RF Amplifiers
RF Detectors
RF Oscillators
RF Receivers
RF Transmitters

SCR
Sample & Hold
Safety/Protection
Security
Seismic
Sensors: Capacitance
Sensors: Current Monitors
Sensors: Human Motion
Sensors: Light and Optical
Sensors: Motion Detectors
Sensors: Peak Detectors
Sensors: Position Detectors
Sensors: Resistance Meters
Sensors: Seismic (Geophones)
Sensors: Temperature
Sensors: Vibration Monitors
Sensors: Voltage Detectors
Sensors: Water / Moisture

Signal Generators
Silicon Controlled Rectifier
Sine Wave Oscillators
Sine to Square Wave Converter
Solar
Solar Energy Monitors NEW
Solid State Relay
Sound Operated
Square Wave Oscillators
Switch
Switch Mode Power Supplies
Sync Circuits

Telephone
Temperature Alarms
Temperature Sensors/Monitors
Tester
Timers & Counters
Touch Switch
TRIAC
Traffic Counter
Train Models
Transformer
Transimpedance Amplifiers
Transistor
Transmitter
Thermistor
Thermocoupler
Triangle Wave Generators
TV Remote Control

Ultrasonic
Ultrasound
Under Voltage Monitors

VCO
Variable Power Supplies
Vibration Monitors
Voltage Comparators
Voltage Converters
Voltage Controlled Oscillators
Voltage Detectors
Voltage Monitors
Voltage Regulators
Voltage to Frequency Converters

Water Sensors
Watt Hour Meters
Waveform Generator
Wave Shaping
Wide Band Amplifiers
White Noise Generation
White LED's
Wireless Telephones

Xenon Lamps
Zero Cross Detectors

Circuits Designed by David A. Johnson, P.E.