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Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, October 18, 2017 05:04 AM

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Amplifiers:
   Audio
   Buffers
   High Frequency

   High Impedance
   High Speed
   Infrared

 
  Low Noise
   Operational
   Power
   Radio Frequency
   Transimpedance
   Variable Gain
   Video
   Wide Band

Airplane Models
Alarms
Antenna
Annunciator
Astable Oscillator
Audio Amplifiers

Audio Oscillator
Automotive

Battery Chargers
Battery Monitors / Tester
Beepers & Buzzers
Bistable Multivibrator

Blinkers
Bridge
Buffer Amplifiers
Burglar

 

Camera
Capacitance Touch Switch
Capacitance Sensors
Charge Pump
Clock

Comparator
Computer Interface
Control
Constant Current
Counters & Timers

AC Power Control
AC to AC Converters
AC to AC Power Supply
AC to DC Power Supply

Active Filters
 

Acquisition / Data Logging

Acoustic

Converters:
  AC to AC
  AC to DC
  Current to Voltage
  DC to AC
  DC to DC
  Frequency to Voltage
  Period to Frequency
  Period to Voltage

  Radio Frequency
  Sine-Square Wave
  Switchmode
  Voltage
  Voltage to Current
  Voltage to Frequency

Capacitance Switches
Clocks
Current to Voltage Converters
Current Loop
Current Monitors
Current Source

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

 

FET
Fiber Optic
Flashers & Blinkers
Flip / Flop
Fluid Level Detectors
Fluorescent Light
Flyback
Freespace Communication
Freezer / Frost Alarm

Frequency Counters / Dividers
Frequency-Voltage Converters

Energy Harvesting

Gadgets
Geophones

H-Bridge
High Frequency Amplifiers
High Impedance Amplifier
High Speed Amplifiers
High Voltage Power Supplies
Hour Meter

Human Motion Monitors

 

 

Ideal Diodes
Indicator

Infrared
Infrared Amplifiers

Inverters


Lamp / Lighting Controls
Laser
Latch

LED (Light Emitting Diode)
Light Beam Communication
Light Dependent Resistors
Light Detectors
Light Flashers & Blinkers

Limiter
Logarithmic
Low Noise Amplifiers
Medical
Microphone
Micro Power
Miscellaneous
Models-Airplanes & Trains
Moisture Sensors
Monostable
MOSFET
Motion Detectors
Motor Controls
Multivibrator

Musical
Noise Generators

One Shot
Optic
Opto-Couplers
Opto-Isolator
Optical Sensors

Oscillators:
   Astable
   Audio
   Crystal
   Radio Frequency
   Sine Wave

   Square Wave
   Triangle Wave
   Voltage Controlled

Over Temperature Monitors

PWM
Passive Filters
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
  AC to DC
  DC to AC
  DC to DC
  High Voltage
  Switchmode
  Variable

Probes
Protection
Pulse Generation

Pulse Width Modulators
Push Pull

RFID
Receiver
Rectifier
Regulators
Relay
Remote Control
Repeaters
Resistance Meters
RF Amplifiers
RF Detectors
RF Oscillators
RF Receivers

RF Transmitters

SCR
Sample & Hold
Safety/Protection
Schmidt Trigger
Security

Seismic
Servo
Sirens

Sensors/Detectors: 
   Automotive Related
   Capacitance

   Current Monitors
   Flow Detectors
   Human Motion
   Light
   Liquid/Fluids
   Motion Detectors
   Optical
   Peak Detectors
   Position Detectors
   Pressure Detectors
   Resistance Meters
   Radio Frequency
   Seismic (Geophones)
   Snow Sensors
   Temperature
   Vibration Monitors
   Voltage Detectors

   Water / Moisture
Signal Generators
Silicon Controlled Rectifier
Sine Wave Oscillators
Sine to Square Wave Converter
Solar Energy
Solid State Relay
Sound Operated

Solar Panels
Sound Synthezier
Strobe Lights
Square Wave Oscillators
Switches
Switches, Capacitance (touch)
Switch Mode Power Supplies
Sync Circuits
Telephone
Television
Temperature Alarms
Temperature Controls
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

Video Amplifiers
Voltage Comparators
Voltage Converters
Voltage Controlled Oscillators
Voltage Detectors
Voltage Monitors
Voltage Regulators
Voltage-Current Converters
Voltage-Frequency Converters

Water Level Sensors
Water Sensors
Watt Hour Meters
Waveform Generator
Wave Shaping
Weather Instruments
Wide Band Amplifiers
White LED
White Noise Generation

Wireless Telephones

Xenon Lamps
Zero Cross Detectors

Dave's Circuits


eMail David A. Johnson, P.E. about this circuit

 

Dave's Circuits

eMail David A. Johnson, P.E. about this circuit

 


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