It is sometimes very annoying for a person who, while watching a TV programme or listening to a radio or the like, has to get up to switch lights or fans or AC off. The same applies when he wants to switch them on. Using the simple...
Friday, September 26, 2014
Flashlight Controlled Remote Control Switch Circuit
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circuit,
control,
controlled,
flashlight,
Remote,
switch
Thursday, September 25, 2014
Simple Time Delay Circuit Using Op Amp
lC1a is provided with re- sistive and capacitive feedback to form an integrator with initial conditions. lC1b is in an "open loop" mode so that its output is either high or low depending on its inputs, and changes state when the output...
Economical Switching LED Driver Circuit
The usual method of operating an LED from a voltage which is higher than its forward voltage is well known. A limiting resistor is used to limit the LED current to its rated value. Learn how to make an economical LED driver circuit.Calculating...
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circuit,
Driver,
Economical,
led,
switching
Wednesday, September 24, 2014
Simple Tachometer Circuit or Revolution Counter Circuit
The explained idea of a simple tachometer circuit can be used as a revolution counter tester for determining or setting the correct optimal engine speed which may ensure maximum engine efficiency from the vehicle. The pulses emanating...
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circuit,
Counter,
or,
Revolution,
simple,
Tachometer
Tuesday, September 23, 2014
Digital Remote Thermometer
Remote sensor sends data via mains supplyTemperature range: 00.0 to 99.9 °CTransmitter circuit diagram: Transmitter parts:R1,R3 100K 1/4W ResistorsR2 47R 1/4W ResistorR4 5K 1/2W Trimmer CermetR5 12K 1/4W ResistorR6 10K 1/4W ResistorR7...
Labels:
digital,
Remote,
Thermometer
Monday, September 22, 2014
12 Volt 30 Amp PSU circuit and explanation
Using a single 7812 IC voltage regulator and multiple outboard pass transistors, this power supply can deliver output load currents of up to 30 amps. The design is shown below:Circuit diagram Notes:The input transformer is likely...
Fuse Box Toyota 1987 Truck Under Dash Diagram
Fuse Box Toyota 1987 Truck Under Dash Diagram - Here are new post for Fuse Box Toyota 1987 Truck Under Dash Diagram.Fuse Box Toyota 1987 Truck Under Dash Diagram Fuse Panel Layout Diagram Parts: wiper, engine, ignition switch, cigar...
Sunday, September 21, 2014
Dual Mode Battery Charger Circuit
There are two main types of battery charger – constant voltage and constant current. Both have their advantages and disavantages. For constant voltage, the battery cannot be overcharged but the charging rate is slow. Constant current...
Saturday, September 20, 2014
Subwoofer circuit
Circuit DescritionThe acoustic spectrum is extended by very low frequencies 20Iz and reaches as the 20000Iz in high frequencies. In the low frequencies is degraded the sense of direction. This reason us leads to the utilization speaker...
Friday, September 19, 2014
VIEWSONIC G90fB 4 Model No VS10794 19” Digital Controlled Color Monitor Schematic Full
Viewsonic G90fB-4 Model No. VS10794 - 19” Digital Controlled Color Monitor_Circuit Diagram_[Full]CPU SMPSOUTPUTVI...
Ultrasonic Distant Obstacle Detector
The first sensor a robot usually gets fitted with is an obstacle detector. It may take three different forms, depending on the type of obstacle you want to detect and also — indeed, above all — on the distance at which you want detection...
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detector,
Distant,
Obstacle,
ultrasonic
Thursday, September 18, 2014
Mercedes Explanation Fuse Box Year 2000 230 Fuel Injection Diagram
Fuse Box Mercedes 2000 230 Fuel Injection Diagram - Below is Fuse Box Mercedes 2000 230 Fuel Injection Diagram.Fuse Box Mercedes 2000 230 Fuel Injection Diagram Fuse Panel Layout Diagram Parts: power seat, auxiliary fan, preresistor,...
Wednesday, September 17, 2014
Dual Regulated Power Supply
In this circuit, the 7815 regulatates the positive supply, and the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 volts for europe, or 120 volts for North America. Dual Regulated Power...
Tuesday, September 16, 2014
Phone Line Polarity Checker
Do you suspect your broadband speed (DSL) is slower than it should be? It could be as simple as incorrect polarity in your phone wall socket. Build this very cheap, very simple device to find out whether you need to change your wiring!It...
Monday, September 15, 2014
VGA to BNC Adapter Converter Wiring diagram Schematic
There are monitors which only have three BNC inputs and which use composite synchronization (‘sync on green’). This schema has been designed with these types of monitor in mind. As can be seen, the schema has been kept very simple,...
Sunday, September 14, 2014
SCHEMA CONVERTER AC 12VDC 220VAC
CMOS 4047 is the capital basic of this baby voltage advocate which transforms a 12V dc into 220V ac. 4047 is acclimated as a astable mutivibrator, at pins 10 and 11 will accept a balanced ellipsoidal arresting wich is amplified b...
12v Battery Charger Circuit
The schema may be accustomed charge 12V lead acid batteries.OverviewPin one of the LM317 IC is that the management pin that is employed to manage the charging voltage, Pin a pair of is that the output at that the charging voltage...
Saturday, September 13, 2014
Small Surround Sound Decoder
This is surround sound decoder. With this schema, you can divide the 2 channel (R and L channel) stereo output become 4 channel output that are R channel, L channel, Center out and Rear out. This schema will enrich your audio sound...
Friday, September 12, 2014
Timer Hack
Normally, the timer clocks we find in stores have to be plugged in to the electrical current to work. It becomes very difficult when you require something that works on batteries The best solution is to build yourself one. It is easy...
Thursday, September 11, 2014
Gamer Lie Detector Wiring diagram Schematic
This is a simple Gamer Lie Detector Circuit Diagram. The two probes shown are held in the hands and the skin resistance applies bias to the transistor. The 5 k ohm pot is set for zero deflection on the meter. When the subject is embarrassed...
LED Sand Glass Timer Wiring diagram Schematic
This schema (Fig. 1) simulates the old sand-glass timer. A total of 32 LEDs create the effect of sand grains passing from the upper half of sand-glass to its lower half.When the power is switched ‘on’, shift registers IC3 and IC4...
Wednesday, September 10, 2014
How to check TV Flyback
There are actually several kinds of tools that can be used for check whether flybak damaged. But we have a simple way we have always done for ascertain whether flybak damaged or is still good, before replacing the horizontal...
Tuesday, September 9, 2014
Simple 5 Band Equalizer
This circuit uses a single chip, IC BA3812L to make 5 band graphic equalizer in audio hi-fi system. BA3812L IC is a 5-point graphic equalizer that has all functions integrated on a single IC. This IC is composed of five tone control...
Monday, September 8, 2014
Infrared Proximity Detector Wiring diagram Schematic
This proximity detector using an infrared detector (Fig. 1) can be used in various equipment like automatic door openers and burglar alarms. The schema primarily consists of an infrared transmitter and an infrared receiver.Fig. 1:...
Stereo Audio Amplifier with IC TEA2024
The circuit above is based on IC TEA2024, package IC is SIP2-10 and manufactered by THOMSON. Circuit above can be applied anywhere as long as the speaker must be required , do not use powered speakers, it will make this circuit...
Sunday, September 7, 2014
Brightness Control for 1 5v bulbs
Lots of people ask about low voltage brightness control diagram so i believe this can be very useful schema for you.I suppose you can use this for various purposes.So try this schema...Parts:Q1 BD681 100V 4A NPN Darlington TransistorP1...
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