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Control Circuits

 
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Last Updated: October 24, 2017 02:54 PM

Circuits Designed by Dave Johnson, P.E.

Infrared Safety SwitchUsing a slotted optical sensor, this circuit can be used as a replacement for a large mushroom pushbutton safety switch. . . Circuit by David A. Johnson P.E.-July, 2006

Infrared TV/VCR Remote BoosterThis circuit will boost the signal from any infrared TV or VCR remote, extending the range by a factor of 3X.. . . Circuit by Dave Johnson P.E.-October, 2005

IR TV/VCR Remote BoosterThis circuit will boost the signal from any infrared TV or VCR remote, extending the range by a factor of 3X. . . . Hobby Circuit designed by David A. Johnson P.E.-October, 2005

Isolated Remote Switch CircuitThere are many applications when a remote switch’s on/off status needs to be monitored.  Reed relay sensors, toggle control switches and security alarms contacts are just a few examples.  Routing a switch directly to a computer system hundreds of feet away. . . Circuit by Dave Johnson P.E.-January, 2009


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

Infrared Safety Switch -  Using a slotted optical sensor, this circuit can be used as a replacement for a large mushroom pushbutton safety switch. . . Circuit by David A. Johnson P.E.-July, 2006

Infrared Switch Is Controlled By A TV Remote. -  Nowadays Appliances used to control almost any function with remote control.  But can not put the remote to control other electrical appliances.  We can do this project With the following – Can be used with almost any infrared remote.  – Can choose to work, or SPST switch or normally open pushbutton switch.  -There are output

Infrared toy car Motor controller -  This add-on circuit enables remote switching on/off of battery-operated toy cars with the help of a TV/ video remote control handset operating at 30–40 kHz.  When the circuit is energised from a...__ Electronics Projects for You

Infrared TV/VCR Remote Booster -  This circuit will boost the signal from any infrared TV or VCR remote, extending the range by a factor of 3X.. . . Circuit by Dave Johnson P.E.-October, 2005

Infrareds for Remote Control -  Infrared based electronic circuit diagrams / circuit schematics __ Designed by Peter Jakab

Instrumentation Applications for High Accuracy Temperature Monitor Products -  Thermal management is a critical part of system design.  FPGAs and processors often require heat sinks and fans, to the extent that a failure (stopped fan or obstructed heat sink) would cause damage.  These devices often have a pin connected to an on-die diode temperature sensor.  It is also useful to know the temperature of other __ Linear Technology/Analog Devices App Note, Leo Chen Aug 24th 2011

Integration of Analog DC/DC Controller with Digital Power Management -  Modern electronics systems require high performance point of load power supplies with advanced and intelligent power management.  Linear Technology’s LTC®3880 combines a best in class analog switching regulator controller with precise mixed signal data conversion for unsurpassed ease of power system design and management.  __ Linear Technology/Analog Devices App Note, Yi Sun Mar 21, 2011

Integrator ramps up/down, holds output level -  09/27/07  EDN-Design Ideas Originally designed for controlling a model train, the integrator ramps up or down at a preset rate in response to changes in the input-dc level and holds at the circuit's input voltage level __ Circuit Design by Glen Chenier, TeeterTotterTreeStuff, Allen, TX

Intelligent AC Power Bar -  NOTE : Must register on this site __ Designed by Published in Elecktor July/Aug, 2010

Intelligent Water Pump Controller with Water-level Display -  Most of the circuits for multi-level indication/control of water in tanks employ a bunch of wires running between the circuit and the overhead tank, which accounts for almost half the cost of the entire project.  Here is an intelligent scanned water-level indicator-cum-pump controller circuit that utilises just four wires to the overhead tank to indicate nine different levels.  

Interior light extender -  All modern cars are fitted with door-switch operated courtesy lights.  Useful devices, but not quite as useful as they might be because they are so arranged that the light is extinguished as soon as you close the doorjust when you need light to find the ignition switch.  do up your seat belt etc.  How much better if the internal light stayed on for a few seconds after the door is closed.   This little project does just that.  It provides a four-second delay (approx) after which the interior light slowly dimsbeing finally extinguished after 10 or 12 seconds.   The unit is very simple to construct and once tested and properly insulated it may be wired across one of the car door switches.   In operation, after a short delay the lights will gradually dim until they are completely extinguished.  There is no battery drain in the off-state as the unit only operates during the delay period after the door is closed.__ CdS Electronic

Internal Temperature Sensor -  The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output.__ Linear Technology/Analog Devices App Note, Jul 7th 2011

Introduction of the DS1847 for Industrial Controls -  App Note/ 1909 / Mar-07) __ Maxim Integrated

Inverted Bipolar Transistor Doubles as a Signal Clamp -  06/07/01 EDN-Design Ideas A number of circuits, such as level detectors and AM demodulators, benefit from a rectifier with a low offset voltage.  Silicon diodes have an offset of approximately 0.6V and do not work well in low-level circuitry.  A Schottky diode is a bit better __ Circuit Design by Art Hogrefe, Puma Instrumentation, State College, PA

Inverting DC/DC controller converts a positive input to a negative output with a single inductor -  EDN-Design Ideas 02/27/2015    Generate negative voltages to -150V from a positive input __ Circuit Design by LTC Design Note

IR Extender Mk 5 -  The latest addition to my collection of Infra Red (IR) Repeater circuits.  The Mark 5 is a much improved version of the Mark 1 circuit and has increased range and sensitivity.  It is also immune to the effects ofambient light, daylight and other forms of interference.  In addition it works with IR modulation freuencies in the range 30 to 120kHz making the Mk5 circuit the best choice for compatibility with remote controls __ Designed by Andy Collison

IR Light Dimmer v.1 -  Schematic only, no circuit description included __ Contact: IQ Technologies

IR Light Dimmer V.1 -  This device is constructed for IR remote Controll of Light Bulbs, and for remote controller can be used any device from TV, VCR or audio __ Designed by © Ivica Novakovic

IR Light Dimmer v.1 SMD -  Dimming The Lights with remote controller, device Ir Light Dimmer, has got a new and simplest version.  The most significant change is microcontroller PIC12F629 in Small-Outline Integrated Circuit (SOIC) package, TSOP2238 ir receiver instead of TSOP1738, and less components on circuit board. __ Designed by © Ivica Novakovic

IR Light Dimmer V.2 -  IR remote controlled Light Dimmercomplete device mounted in switch lightthe easiest and fastest way to mount your Light Dimmer __ Designed by © Ivica Novakovic

IR Link -  This is a battery powered Infra-Red Link that will allow you to change channels on your Satellite Receiver and operate the controls on your VCR & DVD from anywhere in the house.   __ Designed by Ron J

IR Proximity Sensor -  It is the same principle in ALL Infra-Red proximity sensors.  The basic idea is to send infra red light through IR-LEDs, which is then reflected by any object in front of the sensor.  Then all you have to do is to pick-up the reflected IR light.  For detecting the reflected IR light, we are going to use a very original technique: we are going to use another IR-LED, to detect the IR light that was emitted from another led of the exact same type!This is an electrical property of Light Emitting Diodes (LEDs) which is the fact that a led Produce a voltage difference across its leads when it is subjected to light.  As if it was a photo-cell, but with much lower output current.  

IR Remote Control -  Volume and mute are provided by this simple but functional circuit.  Suitable for all preamps.     __ Designed by Rod Elliott  ESP

IR remote control -  A simple one-channel remote control.  It will trigger a relay upon press of a button.   __ Designed by Aaron Cake

IR Remote Control Checker -  Check your remote controls with this simple project.  It will quickly tell you if the remote is dead or if one or more buttons has stopped working.__ SiliconChip

IR remote control extender -  This circuit is used to relay signals from an Infra Red remote control in one room to an IR controlled appliance in another room.   __ Designed by Andy Collison

IR Remote Control Extender (Mark 2) -  This is an improved IR remote control extender circuit.  It has high noise immunity, is resistant to ambient and reflected light and has an increased range from remote control to the extender circuit of about 7 meters.  It should work with any domestic apparatus that use 36-38kHz for the IR carrier frequency.  Please note that this is NOT compatible with some satellite receivers that use 115KHz as a carrier frequency.   __ Designed by Andy Collison

IR Remote Control Extender (Mark 3) -  This Mark3 version of the Infra Red extender is a special version designed to control appliances that use high frequency modulated IR remote controls.   __ Designed by Daniel PozziArgentina

IR Remote Control for Home Appliances -  Most remote controls around us, use IR for signal transmission.  An IR remote control for home appliances helps you connect to your decices at ease and operate them from the comfort __ 04/10/2017EFY

IR Remote Control for Home Appliances -  IR Remote Control for controlling home appliances can be easily made using Decade Counter CD4017, 555 Timer and TSOP1738 infrared receiver.  By using this circuit you can easily control your home appliances using your TV, DVD Player remote control or using a remote control circuit described here. __ Designed by Abhay Bajpai

IR Remote Control Jammer -  Don't like your little brother's TV channel selection? Hate the volume your wife sets the stereo at? Want to just annoy someone?This circuit does all that and more by jamming most IR remote signals.  The circuit releases a flood of pulsing IR light that confuses the reciever by corrupting the data stream __ Designed by Aaron Cake

IR Remote Control Tester -  Gadget Freak Case 147:Couch potatoes should be particularly interested in Bill Bowden's remote control IR receiver, which allows users to control the power of virtually any electrical appliance (including those not equipped for remote) using their standard remote control.  It's based on an IR receiver circuit,  __ Designed by Bill Bowden

IR remote control tester -  Gadget Freak Case 147:Couch potatoes should be particularly interested in Bill Bowden's remote control IR receiver, which allows users to control the power of virtually any electrical appliance (including those not equipped for remote) using their standard remote control.  It's based on an IR receiver circuit,  __ Designed by Bill Bowden

IR Remote Control Tester -  A simple IR receiver to facilitate in testing of Infra Red Remote Control handsets.   __ Designed by Andy Collison

IR Remote Control Toggles Appliances -  12-Aug-10 -Design News:   Bill Bowden asked, "Why not use a standard infrared remote control from a TV, DVD player or cable-TV box to control other things?" So, Bill's  project does just that.  His infrared (IR) receiver decodes the signals from remote controls and uses the data to individually turn on or off __ Gadget Freak-Case # 169

IR Remote Extender -  This circuit can be used to operate a VCR or CD player from another room.  It's really an infrared signal repeater.  The signal from the remote is received and then retransmitted over wires to an infrared LED.  The beam from the LED is then picked up by the receiving window on the VCR or CD player

IR remote extender -  This project describes how to build an IR remote control extender / repeater to control your electronic appliances from a remote location.  An IR detector module receives IR signal from remote control and two IR LEDs are __ Designed by hail Papadimitri

IR remote switch -  Imagine the convenience of selecting TV channels using your remote and then pointing the same remote to your switchboard to switch on/off the fan or the tube light.  Here is a...__ Electronics Projects for You

IR Remote Volume Controller -  Imagine the convenience of selecting TV channels using your remote and then pointing the same remote to your switchboard to switch on/off the fan or the tube light.  Here is a simple circuit to remotely switch on/off any electrical device through a relay using the normal TV/ VCR/VCP/VCD remote control unit.  It works up to a distance of about 10 metres. __ Contact: IQ Technologies

IR Remote-Control Checker -  Suitable for any Infra-red emitting device; 3V battery supply __ Contact: Flavio Dellepiane, fladello @ tin.it

IR Terminal, Remote -  This unit provide 2 way IR communications using a numeric keypad and an LCD display.  Data is sent and recieved in ASCII with no regard to what the data means to any particular device __ Designed by Luhan MonatMesa Arizona

IR TV/VCR Remote Booster -  This circuit will boost the signal from any infrared TV or VCR remote, extending the range by a factor of 3X. . . . Hobby Circuit designed by David A. Johnson P.E.-October, 2005

IR21592 Dimming Ballast Control IC Design Kit -  The IRPLDIM1E is a high efficiency, high power factor, dimming electronic ballast designed for driving rapid start fluorescent lamp types.  The design contains an EMI filter, active power factor correction and a ballast control circuit using the IR21592.  

IR-Based Light Control -  This circuit turns on the lights at the portico, car parking or other areas when a motorbike or car enters through the gate to cross the sensing area.  It can also...__ Electronics Projects for You

IR-Controlled Water Supply -  This circuit can be used in homes or small restaurants for any type of water supply unit, such as toilet flush or washbasin tap.  The circuit can be divided into three sections:...__ Electronics Projects for You

Isolated AC linear power control -  12/02/13  EDN-Design Ideas Don’t discount linear control elements when your load is small or only needs control at either end of the range __ Circuit Design by sajjad Haidar

Isolated Driver Forms Solid-state Breaker -  03/02/98 EDN-Design Ideas (File contains many circuits, please scroll to find this one)  This circuit allows standard TTL logic levels to safely drive a high-power dc load, circuit provIdeas also overcurrent circuit breaker functionality.    __ Circuit Design by Bob Watson, Corley Manufacturing Co, Chattanooga, TN

Isolated Remote Switch Circuit -  There are many applications when a remote switch’s on/off status needs to be monitored.  Reed relay sensors, toggle control switches and security alarms contacts are just a few examples.  Routing a switch directly to a computer system hundreds of feet away. . . Circuit by Dave Johnson P.E.-January, 2009

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Control Circuits:   #'s - A       B - C       D - G        H - L       M - P        Q - S        T - U        V - Z

 


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