All 2743 schematics are available on a single page here.

Motor and general control electronic circuit diagrams / circuit schematics

• DC Motor Control Circuit
  
• Fan control based on a TL082 opamp and IRF510 power MOSFET
  
• Simple 120 VAC motor speed controller based on a TRIAC
  
• Electronic Control for DC Motors Using Discrete Bridge Circuits (PDF)
  
• 556 Timer Stall-Motor Switch Machine Drivers
  
• Stepper motor driver using PIC12F675 that offers serial port command interface
  
• Stepper motor driver using PIC12F675
  
• Simple temperature regulated FAN speed controller
  
• Three electronic circuit diagrams for thermal controllers including linear and PWM control
  
• Shadow activated (or hand wave) motion detector
  
• Clap activated remote control
  
• Light Operated Switch
  
• 555 Based Simple Servo Controller
  
• H Bridge controller for DC motors
  
• DC Motor Controller using 74 series chips
  
• Water system controller (PDF)
  
• Remote Motor Controller
  
• Thermal cooling fan controller
  
• Electronic circuit diagram of cell phone SMS remote control device
  
• DIY Power Pulse Controller
  
• Relay circuit for relay control via an RS232 port
  
• Micro-step driver - connect a bipolar steppe motor to a PC through the parallel port
  
• PA fan temperature controlled speed motor speed controller
  
• Homemade Water Drain Pump controller
  
• 4 Digit Keypad Switch
  
• Simple keypad operated switch
  
• Delayed Power Circuit using an SCR
  
• H-Bridge Circuit
  
• Temperature monitor using 741 opamp
  
• Light detector
  
• Sound operated switch
  
• Voltage comparator switch
  
• Dark activated switch
  
• DC Push Button Motor Control Circuit
  
• CO2 controller for planted tanks
  
• Constant Temperature Circuit
  
• PWM DC Motor Speed Control
  
• Light / dark activated relay
  
• Touch Switches
  
• Stepper motor positioner
  
• AC switching with TRIAC from TTL
  
• Control 120VAC relay with TTL
  
• Driving a relay with a CPU
  
• Pushbutton one-shot and latch (PDF)
  
• Charge coupled bi-directional power MOSFET relay (PDF)
  
• Finger touch activated switch (PDF)
  
• Machine vibration triggers hour meter (PDF)
  
• Solid state relay (PDF)
  
• Line-powered Xenon flash transmitter (PDF)
  
• 9V Xenon photoflash controller (PDF)
  
• Current loop interface
  
• DC Motor-Driver H-Bridge Circuit
  
• H Bridge Motor Control Circuits
  
• Bridge head
  
• 6090 digital decoder schematics
  
• PWM Motor Speed Controller / DC Light Dimmer
  
• Hot Water Tank Level Indicator
  
• DC Motor Reversing Circuit
  
• DS1821 programmable thermostat
  
• Assorted relay control circuits
  
• PWM motor controller
  
• LDR light/dark activated relay switch
  
• Motor speed controllers
  
• Optically isolated stepper motor controller
  
• Push Button Motor Control Circuits
  
• HIGH or LOW Power Switch For Lights or Small Motors
  
• No-Hum Fan Controller
  
• Constant Temperature Circuit
  
• Home Automation Over Internet
  
• CMOS control voltage for firing Crydom Soft-Start Motor Module
  
• FAN Thermostat controlled by IR remote controller
  
• Light switch using LDR
  
• Heating System Thermostat
  
• Touch switch based on CD4011 flip-flop
  
• Pulse width modudulator using 555 timer IC
  
• H-Bridge Motor Driver Using Bipolar Transistors
  
• How to Make a PWM Circuit without a Microcontroller
  
• Optically isolated TRIAC driver
  
• Simple Two Speed Contactor DC Motor Controller
  
• Light/Dark Detector drives a relay
  
• Pulse Width Modulation DC Motor Controller
  
• Water Detector With Sump/Bilge Pump Controller
  
• Time Delay Relay
  
• Time Delay Relay II
  
• Simple Servo Controller using 555 Timer
  
• Stepper Motor Controller using 4027 flip-flop and 4070 XOR gate
  
• AC Motor Speed Controller
  
• Touch Switch using 4011 CMOS NAND Gate IC
  
• 12 Volt Differential Temperature Controller
  
• DAS1 - 12 Volt 10 Amp Dark Activated Switch
  
• PWM Motor Speed Controller / DC Light Dimmer
  
• PWM Motor/Light Controller circuit diagrams
  
• High current PWM controller based around a 555 timer
  
• Relatively simple thermostat circuit diagram
  
• Electric heater thermostat
  
• Brushless DC electric motor control by CPLD
  
• GSM SMS javljalnik ALSMS-01 (page in slovenian )SMS remote control project
  
• Selection of PWM driver circuits for electric DC motors
  
• Variety of simple motor control circuit diagrams using SCR or TRIAC
  
• Audio Signal Detecting Auto Power-On Unit
  
• Mains Power Load Sensing Automatic Switch
  
• Thermo-Fan to keep your amplifier or other equipment cool
  
• Dremel drill speed controller
  
• PWM Heater fan controller based on PIC12F675
  
• Arduindo based Appliance Remote Control
  
• Dual fan controller using ATTiny45 microcontroller
  
• Op Amp based PID Controller circuit with SPICE simulation
  
• Various CNC mill circuit diagrams and other DIY CNC mill information
  
• Circuit for soft start module for induction motor
  
• Dual stepper motor drivers using UDN2540
  
• PWM DC motor driver and control with SG3525
  
• Smooth, fast, strong and cheap stepper motor controller using a PIC micro
  
• Unipolar and bipolar stepper motor driver circuits using 74194 and ULN2803
  
• Two-button control for dangerous machines
  
• Making a bistable from a normal relay, based on coil hysteresis
  
• Digital Encoder Circuit Using Stepper Motor
  
• MOSFET based H-Bridge controller for DC motors
  
• Miniature Real-time Controller based on a 89C2051
  
• Presure based hit switch
  
• Clap operated remove control for fans