How to Build a Low Noise And Drift Composite Amp Circuit Diagram. This schema offers the best of both worlds. It can be combined with a low input offset voltage and drift without degrading the overall system`s dynamic performance. Low Noise And Drift Composite Amp Circuit DiagramCompared to a standalone FET input operational amplifier, the composite amplifier schema...
Sunday, August 31, 2014
2008 Mazda 3 Wiring Diagram
2008 Mazda 3 Wiring Diagraminternet marketing The part of 2008 Mazda 3 Wiring Diagram: illumination light, main fuse block, relay diagram, panel light control switch, ashtray illumination, panel light control switch, glove compartment, instrument cluster, data link connector, coil antenna, fuel gauge sender unit, micro computer, ignition key illumination, main fuse block,...
Simple Function Generator Wiring diagram Schematic
This is a simple function generator schema that can produce the following waveforms: square wave, triangular wave, and sine wave.The diagram main components are two 1458 ICs. The 1458 is a dual op-amp IC, i.e., an IC that houses two op amps inside it. The schema uses four op amps, two from each 1458. The bottom-most op amp in Figure 1 is configured as an astable...
Build a 1000W Power Amplifier Wiring diagram Schematic
This is a like full 1000W Power Amplifier Circuit Diagram. I think youve seen or even have an active speaker and there is written 1500 watts PMPO (Peak Music Power Output), make no mistake this is different from Power Amplifier Active Speaker, I often dismantle such Active Speaker in it only a power with power no more than 150 watts by using the transformer 2-3 Ampere. PMPO...
NE 555 Pulse generator
Most of our members asked pulse generator diagram. so this is a simple and common schema.and you can use this with your light schema diagrams too.Note# Dont supply more than ...
Factory Siren
This schema produces a sound similar to a factory siren.It makes use of a 555 timer Ic used as an astable multivibrator of a center frequency of about 300Hz.The frequency is controlled by the pin 5 of the ICWhen the supply is switched ON, the capacitor charges slowly and this alters the voltage at pin 5 of the IC hence the frequenct gradually increases.After the capacitor...
4 Bit Analogue to Digital Converter
The operation of the converter is based on the weighted adding and transferring of the analogue input levels and the digital output levels. It consists of comparators and resistors. In theory, the number of bits is unlimited, but each bit needs a comparator and several coupling resistors. The diagram shows a 4-bit version. The value of the resistors must meet the following...
Saturday, August 30, 2014
Small Audio Amplifiers Using LM386 and NE5534
Many electronic projects require the use of a small audio amplifier. Be it a radio transceiver, a digital voice recorder, or an intercom, they all call for an audio amp that is small, cheap, and has enough power to provide adequate loudness to fill a room, without pretending to serve a disco! About one Watt RMS seems to be a convenient size, and this is also about the highest...
Audio Power Meter Wiring diagram Schematic
This is an audio power meter simple with this schema, dual LED starts to light green around 0.1 watts into 8 ohms (0.2 watt into 4 ohms). Naturally, this depends on the specific type of LED is used. Despite being a simple equipment he is impressively bench since with a load resistor connected to output of speakers is possible to measure the sound level up, or just check its...
Infra red Level Detector
This schema is useful in liquids level or proximity detection. It operates detecting the distance from the target by reflection of an infra-red beam. It can safely detect the level of a liquid in a tank without any contact with the liquid itself. The devices range can be set from a couple of cm. to about 50 cm. by means of a trimmer.Range can vary, depending on infra-red transmitting...
Simple Equipment on reminder Wiring diagram Schematic
This is an Equipment on reminder Circuit Diagram. Due to the low duty cycle of flashing LED, the average current drain is 1 mA or less. Equipment on reminder Circuit Diag...
Build a Charger Extends Lead Acid Battery Life Wiring diagram Schematic
The Charger Extends Lead-Acid Battery Life Circuit Diagram furnishes an initial charging voltage of 2.5 V per cell at 25°C to rapidly charge a battery. The charging current decreases as the battery charges, and when the current drops to 180 mA, the charging schema reduces the output voltage to 2.35 V per cell, floating the battery in a fully charged state. This lower...
Touch Switch II
This schema uses a 555 timer as the bases of the touch switch. You can learn more about 555 timers in the Learning section on my site. When the plate is touched the 555 timer is triggered and the output on pin 3 goes high turning on the LED and the buzzer for a certain period of time. The time that the LED and the buzzer is on is based on the values of the capacitor and resistor...
Friday, August 29, 2014
Transistor As a timer circuit
Basically on all timer or timer circuit utilizing most of the basic characteristics of the capacitor. The basic characteristic is the process of filling and discharge that occurs in the capacitor. The length of time charging and release depends on the value of the capacitor.If we observe the above circuit, the light will immediately switch SW1 turns on when we plug it...
Build a Voltage Regulator 12v to 24v using 7812
How to build a voltage regulator 12v to 24v using 7812. What many people do not know is it possible for a voltage regulator IC to provide an output voltage higher than its actual value. One method to achieve this is by connecting the "common" terminal to the middle point of a potential divider, but the problem with this method is that the regulators IC has a small quiescent...
Vocal Adaptor for Bass Guitar Amp
These days, music is a major hobby for the young and not-so-young. Lots of people enjoy making music, and more and more dream of showing off their talents on stage. But one of the major problems often encountered is the cost of musical equipment. How many amateur music groups sing through an amp borrowed from a guitarist or bass...
IR Remote Control Tester
A 741 or LF351 will not work in this schema. Although I have used a 12 volt power supply, a 9 volt battery will also work here.As I was developing my IR Extender Circuit, I needed to find a way of measuring the relative intensities of different Infra red light sources. This schema is the result of my research. I have used a photodiode, SFH2030 as an infra red sensor. A MOSFET...
Simple Rf Probe Wiring diagram Schematic For vtvm
This Simple Rf Probe Circuit Diagram combines a 555 timer with a 2N2222 transistor and an external potentiometer. The pot adjusts the output voltage to the desired value. To regulate the output voltage, the 2N2222 varies the control voltage of the 555 IC, increasing or decreasing the pulse repetition rate. A 1 K resistor is used as a collector load. The transistor base is...
Electrical Isolation For I2C Bus Wiring diagram Schematic
When the SDA (Serial DAta) lines on both the left and right lines are 1, the schema is quiescent and optoisolators IC1 and IC2 are not actuated. When the SDA line at the left becomes 0, current flows through the LED in IC1 via R2. The SDA line at the right is then pulled low via D2 and IC1. Optoisolator IC2 does not transfer this 0 to the left, because the polarity of the...
Thursday, August 28, 2014
12V to 24V Simple DC Converter Circuit
12V to 24V Simple DC Converter CircuitA acquaintance of me wants the ambit enhances Voltage 12VDC from be 24VDC or DC to DC Converter 12V to 24V. By fix acknowledge that be the ambit is simple , body not difficult. I afresh admonish this ambit try out anticipate use aloof Transistors D1616 = 2 pcs. with agent the small-sized , mix with added accessories a little alone again....
Long range Burglar Alarm Using Laser Torch
Laser torch-based burglar alarms normally work in darkness only. But this long-range photoelectric alarm can work reliably in daytime also to warn you against intruders in your big compounds, etc. The alarm comprises laser transmitter and receiver units, which are to be mounted on the opposite pillars of the entry gate. Whenever anyone enters to interrupt the transmitted laser...
Mini Portable Guitar Amplifier
Can be fitted into a packet of cigarettes, Also suitable as Fuzz-boxThis small amplifier was intended to be used in conjunction with an electric guitar to do some low power monitoring, mainly for practice, either via an incorporated small loudspeaker or headphones. The complete schema, loudspeaker, batteries, input and output jacks can be encased in a small box having the...
PWM Based Speed Control for DC Motors
There are several methods for controlling the speed of DC motors. One simple method is to add series resistance using a rheostat. As considerable power is consumed in the rheostat, this method is not economical. Another method is to use a series switch that can be closed/opened rapidly. This type of control is termed as chopper control. We’ve described here a PWM-based chopper...
Interior Light Fader for Automobile
Here the schema diagram of Interior Light Fader for Automobile. The schema is build using low power operational amplifier LM324 which only need around 3mA of current, so it wont bother the battery supply if left connected for extended periods. This schema is similar to the fading eyes schema above and is used to slowly brighten and fade interior lights of older cars.The top...
Wednesday, August 27, 2014
Audio Pre Amplifier Wiring diagram Schematic
Simple Audio Pre-Amplifier This simple schema provides good gain to too audio singnals .Use it in main of an RF oscillators to make an RF transmitter that is very sensitive to soundAudio Pre-Amplifier Circuit Diagram...
How to Build Unregulated Linear Power Supply
Unregulated power supplies contain four basic components: transformer, rectifier, filter capacitor, and a bleeder resistor. This type of power supply, because of Us simpticity, is the least costly and most reliable for low power requirements. The disadvantage is that the output voltage is not constant It will vary with the input voltage and the load current, and the ripple...
FM Radio Jammer circuit diagram
This is FM radio jammer schema diagram.This is not legal device in many countries.So dont misuse this.we dont get any response of it.Note# This schema operates with 9V# L1 make 6 turns of 16AWG enamelled copper wire on a 9mm plastic form...
High impedance balance output circuit
Because of high input impedance required to maximize CMRR, High impedance balance output circuit shown in figure below , has been used for the input impedance is determined solely by the input bias resistance R1 and R2. High impedance balance output circuit also useful for interfacing with valve equipment in the strange world of retro-hi-fi.High impedance balance output circuitAdding...
PC Driven LED Display Wiring diagram Schematic
Here is a schema to generate sequentially running light effects using a simple program written in C. The output of the program is taken from the LPT port of a PC and then fed to the interfacing schema for the LED display. The outputs of the interfacing schema are decoded, inverted, and then connected to LEDs through optocouplers. Fig. 1: Interfacing schema for PC-driven...
Tuesday, August 26, 2014
Anti Theft Alarm for Vehicles Wiring diagram Schematic
This simple and inexpensive anti-theft schema for vehicles sounds an alarm simulating a police siren whenever someone attempts theft of your vehicle. The alarm sounds continuously for a few seconds even when the intruder switches off the ignition key. The schema uses only a few components and can be easily assembled and installed on a car with negative grounding.Anti-Theft...
12 Volt Battery Guardian Wiring diagram Schematic
Dont get caught with a flat battery; this easy-to-build schema can cut off the power to a 12V fridge or car stereo system if the battery voltages drops below critical level. Electric fridges in vans and 4WDs are a great idea but if you are not careful, they can severely discharge the battery and leave you stranded. Maybe the battery will end up with severe damage as well....
Tranceiver DC adapter
This DC adaptor provides a regulated 9V source for operating a transceiver in the car .The IC LM317 is mpounting tab is electrically connected to its output pin. so take this into account tour version of the adapter. The LM317T regulator dissipates 2 or 3 Watt in this circuit , so mount it on a 1- x -2 inch piece of 1/8 inch thick alumunium heatsink. Dont forget to give heatsink...
