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Motor Control Circuits   Page 2a
Motor Controls:  #-B     C     D-G      H-L        M-O      P-R       S      T-Z

Last Updated on: Wednesday, November 29, 2017 05:40 AM
 


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Circuit provides Bidirectional variable speed Motor-control -  05/16/02 EDN-Design Ideas....During the development of systems that include small motors, a simple, bidirectional motor controller with speed adjustment may be helpful. Figure 1 shows such a controller. The circuit....EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
Circuit provides Class D motor-control -  1-May-03 Issue of EDN  Class D audio amplifiers provide a dual benefit for battery-powered portable devices. They enhance battery life, and they produce much less power....[Design Idea by John Guy, Maxim Integrated Products, Sunnyvale, CA]
Circuit provides efficient fan-speed control -  4-Mar-04 Issue of EDN  As Moore's Law plunges us into the realm of multigigahertz processors and PCs with gigabytes of RAM, engineers face the task of removing the heat that these state-of-the-art components produce. Cooling such systems poses a dilemma. If you optimize the fan size and speed for nominal operating conditions, the system is susceptible to failure when conditions deteriorate....[Design Idea by John Guy, Maxim Integrated Products, Sunnyvale, CA]
CMOS Toggle Flip Flop Using Push Button -  The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a momentary push button. Several push buttons can be wired in parallel to control the relay from multiple locations. A high level from the push button is coupled to the set line through a small (0.1uF) capacitor. The high level from the Q output....[Bill Bowden's site]
CNC Router Now this was an interesting project.
CO2 Controller for planted tanks -  (schematic / circuit added 2/07)
Cold Activated Switch -  The thermistor used has a resistance of 15k at 25 degrees and 45k at 0 degrees celsius. A suitable bead type thermistor is found in the Maplin catalogue. The 100k pot allows this circuit to trigger over a wide range of temperatures. A slight amount of hysteresis is provided by inclusion of the 270k resistor.  This prevents relay chatter when temperature is near the switching threshold of this circuit. (added 2/06)
Combination-Controlled fully customizable RF remote Control -  (circuit added 1/07)
Computer Controller for DC Motors -  This circuit is easy to build and use and it can control two DC motors of any current or voltage rating, depending on the rating of the relays. The circuit also provides two shaft encoders for positional feedback to the computer. (added 5/02)

 

Computer Fan speed tacho out circuit: Add a Fan speed monitor lead to any 12V two Wire Fan.  -  Add a fan speed monitor lead to any 12V two wire fan.  You will find this identical circuit inside most 3 wire computer fans with speed monitoring output to the motherboard.  Peel off the sticker from the fan hub in order to access a motor winding pin for connecting up the tacho circuit....[Circuit by Stepan Novotill]
Constant Brightness LED Stroboscope: for Measuring the Speed of Small Motors  -  For measuring the speed of small motors.  The rotary switch is available for $5.00USD as of 2003 from DigiKey under part number EG1951-ND or EG1952-ND. It is a real pain to operate this circuit without a proper switch. You can put multiple 4017 ring counters in series to reduce the duty cycle in order to obtain a more focussed strobe image but you will have to increase L or by using a regulator to power....[Circuit by Stepan Novotill]
Constant Temperature Circuit -  This circuit is a generic low power temperature controller that can be used for stabilizing temperature sensitive electronic circuits. It was built to stabilize a radio frequency VFO (Variable Frequency Oscillator) for ham radio applications. The circuit has also been used to lower the drift of a Ramsey FM10a micropower FM transmitter....(schematic / circuit added 2/07) [G. Forrest Cook]
Consumer STB/DVD -  (application / block diagram added 6/07)
Control 120VAC relay with TTL -  ASCII format (electronic design added 02/03/04)
Control stepping Motor via USB interface -  This is an example that demonstration how to control some devices via USB interface.The PC software program with delphi. Feature:, CPU PIC18F4550 with full speed USB interface at 48MHz., USB 2.0 compliance, Use on-chip USB driver....(schematic added 7/08)
Controlling 3-Phase AC Induction Motors using the PIC18F4431 -  Microchip Application Note Published 29-Jun-04  (app note added 2/06)
Cooling Fan Controller -  As we begin to enjoy those lazy hazy days of summer, the most important thing on most of our minds is how to keep cool during those hot days. For some of us that means turning up the old air conditioner and sipping on a nice cold glass of our favorite soft drink. However, we often forget about an equally important....[Radio Amateur Society of Norwich]
Current loop interface -  (diagram added 2/07)
Current-sense IC Prevents OverCurrent Damage -  04/25/96 EDN-Design Ideas....EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
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