Voltage Controlled Oscillator

In most cases, the frequency of an oscillator is determined by the time constant RC. However, in cases or applications such as FM, tone generators, and frequency-shift keying (FSK), the frequency is to be controlled by means of an input voltage,...

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Automatic Room Power Control

          An ordinary automatic room power control circuit has only one light sensor. So when a person enters the room it gets one pulse and the lights come ‘on.’ When the person goes out it gets another pulse and the...

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12V Flourescent Lamp Inverter

Fluorescent tubes use far less energy than incandescent lamps and fluorescent tubes last a great deal longer as well. Other advantages are diffuse, glare-free lighting and low heat output. For these reasons, fluorescent lighting is the natural...

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1 Zener Precise Limiter Circuit Diagram

A limiter 1 Zener Precise Limiter Circuit Diagram that requires matched zener diodes can instead use one zener with a full-wave diode bridge. The circuit`s two limits are nearly equal when determined by the same zener—only two pairs of forward...

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Door alarm for Fridge

This circuit will help you to save your electricity bill.  Incase if you leave the fridge door open more than twenty seconds. The circuit consumes very little current as it can operates by a 3 volts battery. You can enclose this whole...

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RING BELL ELECTRONIC CIRCUIT USING NE555 DIAGRAM

RING BELL ELECTRONIC CIRCUIT USING NE555 DIAGRAMThis circuit produces oscillating frequency around 1kHz, and able to be converted by changing the value of resistor R1. The speaker will produce a long beep sound with 1kHz frequency. Here is...

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AFX Slot Car Lap Counter

AFX slot car sets are very enjoyable but you can increase the fun with a lap counter. This circuit will count from 00 to 99, with independent counters for each track. The sensing device used is a Hall effect sensor (UGN3503; available from...

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Step Up Booster Powers Eight White LEDs

Tiny white LEDs are capable of delivering ample white light without the fragility problems and costs associated with fluorescent backlights. They do pose a problem however in that their forward voltage can be as high as 4 V, precluding them...

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Five band graphic equalizer

This is a five band graphic equalizer circuit. Comparatively this is a very simple diagram and working voltage is 8 volts. However you can supply up to 15 volts, but we do not recommend that much of supply. The specialty of this circuit is...

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Usb Power Socket Circuit Diagram

Today, almost all computers contain logic blocks for implementing a USB port. A USB port, in practice, is capable of delivering more than 100 mA of continuous current at 5V to the peripherals that are connected to the bus. So a USB port can...

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Fuse Box BMW 540i 1993 Diagram

Fuse Box BMW 540i 1993 Diagram - Here are new post for Fuse Box BMW 540i 1993 Diagram.Fuse Box BMW 540i 1993 Diagram Fuse Panel Layout Diagram Parts: blower relay, crash control module, late production, auxiliary water pump relay, horn relay,...

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Build a 10 Amp Solar Charge Controller SCC2 Circuit

The SCC2 is a solar charge controller, it’s function is to regulate the power flowing from a photovoltaic panel into a rechargeable battery. It features easy setup with one potentiometer for the float voltage adjustment, an equalize function...

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Wireless IR Headphone Transmitter

Audio input from PL1 frequency modulates the VCO section of a 4046 PLL chip. The VCO output drives Q1, a switching transistor. Q1 drives two IR LEDs. The signal produced is around 100 kHz, FM carrier VCO sensitivity is around 7.5 kHz/V.Wireless...

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Controlling A Relay With A Digital Logic Level Circuit

Description The schematic below illustrates 4 methods of controlling a relay with a digital logic signal. Figure (A) can probably be used in most cases where the relay coil requires 100 mA or less and the input current is 2 milliamps...

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Wiring Color Trailer Plug

Looking To The Rear For The Trailer Plug The Pins Are Reversed And.Trailer Wiring Diagram Light Plug Brakes Hitch 4 Pin Way Wire Brake.Trailer Light Wiring Typical Trailer Light Wiring Diagram.Trailer Parts Depot Trailer Wiring Kits...

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Direction Sensor CMPS03

CMPS03 Compass Module OverviewCompass is a tool for navigation for a direction, a direction in this article referred to is the magnetic module CMPS03 Compas. Magnetic Compass Module CMPS03 often used in making robots in the contest.Magnetic...

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Telephone Call Recorder

Today phone has change into an essential component of our lives. It is essentially the most extensively used communique tool on the earth. Owing to its big reputation & in style use, there arises a necessity for name reporting gadgets,...

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Battery charger using LM350

This is very useful circuit for the vehicle owners.Because most of time they have to bring their heavy 12v battery hear and there.now you dont want to do that.because you can build your own 12v chargerNotesUse a 20 to 30 V / 3A DC power supply...

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Green USB switch

According to the Energy Saving  Trust, if you add up all the current drawn in standby mode by items such as stereos, TVs, VCRs and DVDs over a year in the UK alone, it amounts to 3.1 million tonnes of CO2 released into the atmosphere.This...

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Wire Home Exterior Grade Wiring

Troubleshoot Household Electrical Circuits.Home Wiring.In Your Home Home Planning Understanding A Home S Electrical System.Sky Com Residential New Home Pre Wiring Design And Installation.Home Electrical Circuit Design Microelectronic...

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Switched Ethernet Modern Ethernet Implementations

Cat7 Cables 100 Ohm Utp Unshielded Twisted Pair Ethernet Wiring.R Seau Ethernet Lan C Bl En Fils De Cuivre Cat5.Category 5 Wiring Scheme Straight Through Cable Vs Crossover Cable.Cat 5 Ethernet Cable Standards Pin Out Assignments.Switched...

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