Solid state relays are almost everywhere these days, but they are very expensive. So, your efforts to build their own salary. Especially since it’s only a few parts and circuit simple and straightforward. Solid state relay is not really at all relays. There are no “relay” is available only with...
Basic Monostable Using with LM555
Welcome to free circuit dot com,For the last article in this series, we may be unstable a cycle which has no stable output state. In this post circuit we will show the monostable circuit, which has a stable state.Basic Monostable Circuit diagram The waveforms in Figure 1 show the effect of a monostable....
How to Make a Simplest Triac Dimmer Switch Circuit
We have already seen in many of my earlier articles how triacs are used in electronic circuits for switching AC loads. Triacs are basically devices which are able to switch ON a particular connected load in response to an external DC trigger.Though these may be incorporated for complete switch ON and...
Build 20W MOSFET Power Amplifier Circuit with IFR9520 IFR520
As we are like to show you about audio and sound circuit ,I found the circuit which is good one for power amplifier with one MOSFET.The output power of an operational amplifier is often increased by a complementary emiter follower.20W power amp MOSFETIt can also be done with a MOSFET,but it is not...
9 Volt 2 Amp PSU Circuit
A simple 9 Volt 2 amp supply using a single IC regulator. The circuit will work without the extra components, but for reverse polarity protection a 1N5400 diode is provided at the input, extra smoothing being provided by C1. The output stage includes C2 for extra filtering, if powering a logic circuit...
Zero Crossing Detector Circuit
Zero Crossing Detector circuit is basically an application of a comparator. In the article series Zero Crossing Detector with Op Amp is built using a comparator of an Op Amp IC741/351. The process of detection of this comparator is 0Volt input signal crossing point by making reference value...
A178 00206wiringplug Socket House Wallconstruction
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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 is without factoring in the current drawn by all...
Voltage Tester for Model Batteries
With a suitable load, the terminal voltage of a NiCd or lithium-ion battery is proportional to the quantity of saved power. This relationship, which is linear over a large range, will also be utilized to build a easy battery capability meter. Circuit Image : Voltage Tester for Model Batteries...
12 Volt DC Fluorescent Lamp Driver
A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp driver that does not require any special components. I finally found one in Electronics Now. Here it is. It uses a normal 120 to 6V stepdown transformer...
Precision Voltage Inverter Circuit Diagram
This Precision Voltage Inverter Circuit Diagram allows a reference to be inverted with 1 ppm accuracy, features high input impedance, and requires no trimming.Precision Voltage Inverter Circuit Diagram&nb...
Simple Gate Alarm
Description:A cheap and simple gate alarm made from a single CMOS Integrated Circuit.Figure 1 represents a cheap and simple Gate Alarm, that is intended to run off a small universal AC-DC power supply.IC1a is a fast oscillator, and IC1b a slow oscillator, which are combined through IC1c to emit a high...
Current to Voltage Converter Circuit Diagram
A filter removes the dc component of the rectified ac, which is then scaled to RMS. The output is linear from 40 Hz to 10 kHz or higher. Current to Voltage Converter Circuit Diag...
2007 Toyota Prius How to Replace the Rear Wiper Blades
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Tap Lights Built in 12 volt LED lights
Israeli-born Parisian designer Arik Levy has recently demonstrated the well of life, he designed a series of lighting products Fontana,. The design of the name comes from its shape is similar taps. The base is described as a cylinder, the side set up a bending of the long tube, suspended above the container,...
Software delay routine in 8051
In an 8051 microcontroller, it
requires 12 cycles of the processor clock for executing a single
instruction cycle. For an 8051 microcontroller clocked by a 12MHz
crystal, the time taken for executing one instruction cycle is 1µS and
it is according to the equation, Time for...
Cone Bass Guitar Woofers Wired Series Parallel Configuration
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30 watt Audio Amplifier using TDA 2040
An 30 Watt audio amplifier circuit with TDA2040 shown here. TDA2040 is class AB amplifier monolithic integrated audio Pentawatt available in the package. The IC has a low harmonic distortion, cross low over the distortion and has a built in short circuit protection circuit. In the circuit of two...
