Motor Controller circuits
- 12 Volt Differential Temperature Controller
- 35KHz Magnetic-Radiation Remote-Control
- 4 Digit Keypad Switch
- 4-bit receiver for DC motor control
- 555 Based Simple Servo Controller
- 556 Timer Stall-Motor Switch Machine Drivers
- 5A H-bridge motor driver based on TIP122 / TIP127 power transistors
- 6090 digital decoder schematics
- 9V Xenon photoflash controller (PDF)
- A Simple Repeater Fan Controller (PDF)
- AC Motor Speed Controller
- AC switching with TRIAC from TTL
- Assorted relay control circuits
- Audio Signal Detecting Auto Power-On Unit
- Bipolar stepper motor driver based on 74194 chip
- Bridge head
- Brushless DC electric motor control by CPLD
- Charge coupled bi-directional power MOSFET relay (PDF)
- Clap activated remote control
- CMOS control voltage for firing Crydom Soft-Start Motor Module
- CO2 controller for planted tanks
- Constant Temperature Circuit
- Constant Temperature Circuit
- Control 120VAC relay with TTL
- Current loop interface
- Dark activated switch
- DAS1 - 12 Volt 10 Amp Dark Activated Switch
- DC Motor Control Circuit
- DC Motor Controller using 74 series chips
- DC Motor Driver with L6203
- DC Motor Reversing Circuit
- DC Motor-Driver H-Bridge Circuit
- DC Push Button Motor Control Circuit
- Delayed Power Circuit using an SCR
- Digital logic controller
- DIY Power Pulse Controller
- Driving a relay with a CPU
- DS1821 programmable thermostat
- Dual Stepping motor drivers using UDN2540
- Electric heater thermostat
- Electronic circuit diagram of cell phone SMS remote control device
- Electronic Control for DC Motors Using Discrete Bridge Circuits (PDF)
- Fan control based on a TL082 opamp and IRF510 power MOSFET
- FAN Thermostat controlled by IR remote controller
- Finger touch activated switch (PDF)
- GSM SMS javljalnik ALSMS-01 (page in slovenian )SMS remote control project
- H Bridge controller for DC motors
- H Bridge Motor Control Circuits
- H-Bridge Circuit
- H-Bridge Motor Driver Using Bipolar Transistors
- Heating System Thermostat
- High And Low Voltage Cut Off With Time Delay
- High and Low Voltage Cutout with delay and Music
- High current PWM controller based around a 555 timer
- HIGH or LOW Power Switch For Lights or Small Motors
- Home Automation Over Internet
- Homemade Water Drain Pump controller
- Hot Water Tank Level Indicator
- How to Make a PWM Circuit without a Microcontroller
- LDR light/dark activated relay switch
- Light / dark activated relay
- Light detector
- Light Operated Switch
- Light switch using LDR
- Light/dark detector
- Light/Dark Detector drives a relay
- Line-powered Xenon flash transmitter (PDF)
- Machine vibration triggers hour meter (PDF)
- Mains Power Load Sensing Automatic Switch
- Micro-step driver - connect a bipolar steppe motor to a PC through the parallel port
- Microstepping with PBM3960 and TEA3718
- Modular relay system
- MOSFET based speed controller uses 9 IRFZ40 power MOSFETS
- MOSFET H-BRIDGE schematic and theory
- Motor speed controllers
- MotorDriver V1.0 - Dual DC Motor Driver Board (LMD18200T based, 55V 3A, 6A peak) - PDF
- No-Hum Fan Controller
- NPN transistor circuit for relay control (relay driver)
- One component stepper motor driver
- Optically isolated stepper motor controller
- Optically isolated TRIAC driver
- Over / Under Voltage Cut-Out
- PA fan temperature controlled speed motor speed controller
- Pulse width modudulator using 555 timer IC
- Pulse Width Modulation DC Motor Control
- Pulse Width Modulation DC Motor Controller
- Push Button Motor Control Circuits
- Pushbutton one-shot and latch (PDF)
- PWM DC motor control with SG3525
- PWM DC Motor Speed Control
- PWM motor controller
- PWM Motor Speed Controller / DC Light Dimmer
- PWM Motor Speed Controller / DC Light Dimmer
- PWM Motor/Light Controller circuit diagrams
- Radio Remote Control using DTMF
- Relatively simple thermostat circuit diagram
- Relay circuit for relay control via an RS232 port
- Relay circuit using 74LS573 to driver 5V DC relays
- Relay controller based on Microchip PIC16F84 (PDF)
- Remote Motor Controller
- Rolling code 4-channel UHF remote control
- Safe Universal Mains Switching Box
- Selection of PWM driver circuits for electric DC motors
- Serial servo controller
- Several stepper motorol control circuits
- Shadow activated (or hand wave) motion detector
- Simple 120 VAC motor speed controller based on a TRIAC
- Simple keypad operated switch
- Simple Servo Controller using 555 Timer
- Simple temperature regulated FAN speed controller
- Simple Two Speed Contactor DC Motor Controller
- Smart switch, short press for on, longer press to turn off
- Solenoid starter
- Solid state relay (PDF)
- Solid-state power controller
- Sound operated switch
- Stepper motor controller
- Stepper motor controller
- Stepper Motor Controller using 4027 flip-flop and 4070 XOR gate
- Stepper Motor Driver using L298 and L297
- Stepper motor driver using PIC12F675
- Stepper motor driver using PIC12F675 that offers serial port command interface
- Stepper Motor Driver using TEA3718/3717
- Stepper motor positioner
- Switching solenoid driver
- Temperature monitor using 741 opamp
- Thermal cooling fan controller
- Thermo-Fan to keep your amplifier or other equipment cool
- Three electronic circuit diagrams for thermal controllers including linear and PWM control
- Time Delay Relay
- Time Delay Relay II
- Touch switch
- Touch switch based on CD4011 flip-flop
- Touch Switch using 4011 CMOS NAND Gate IC
- Touch Switches
- Unipolar stepper motor driver based on 74194 chip
- Variety of simple motor control circuit diagrams using SCR or TRIAC
- Voice activated switch using MC2830
- Voltage comparator switch
- Water Detector With Sump/Bilge Pump Controller
- Water system controller (PDF)
- Wireless RF PWM dual motor controller
