Do More

LA4440 This is a very simple circuit power amplifier with IC LA4440. This circuit is a circuit the first time i learned to make a power amplifier. Power output 2 X 20 Watt with stereo speakers. Minimum Voltage 9 Volt and maximum voltage 24 V. The Circuit is also very easy to make. For novices , this circuit is suitable for use . The material is also readily available at electronics store.  See schematic below : The Speaker are matched with woofer speaker with impedance 4 Ohms. And voltage can be stabilized with IC 7812 but must be reinforced such us transistor.

Car Stereo Speaker: Let Your Car Stereo Speak For Itself - Even if you’re not a car audio connoisseur, it’s easy to be impressed with a car stereo speaker while looking around in an expo or convention. They’re the first thing you’ll probably notice, they come in different colors, shapes and sizes. Those big throbbing concaves blaring incredibly low bass lines or cool little tweeters whistling out seething treble sounds. Car stereo speakers are interesting and very tempting to buy, especially the big loud ones. But big is not always the best. Each speaker has its own unique quality, intended use and price range. Some may also be better than others at certain things so it pays to investigate your type of car stereo amplifier or head unit before you finally decide on a car stereo speaker for your system. Here are some features to consider:  Car stereo speakers are not all the same size and wattage, and this can cause a problem once you try to hook it up in your car. Know the spec...

This circuit using IC LA4445 , this is stereo amplifier with power output 2 X 18 Watt, with this circuit you can use to car amplifier or to other elctronics device. Speaker use woofer with impedance 4 Ohm with power up to 20 Watt. Minimum voltagte require 10 Volt and maximum voltage 18 volt. see schematic below :    If you can't operate the circuit , please check IC , and then voltage in. If voltage is good check the component are. If components are working . Please check speakers.

This circuit use the IC AN7166  . On circuit have an advantage is very loud sound , although only 30W this circuit is like a 100 W transistor power amplifier. Its so good circuit with IC AN7166 . This circuit require minimum voltage 12 V and Maximum voltage 24 volt , I recomended voltage for this circuit is 18 volt. And use the battery supply current 5 Ampere. Maximum power output of one speaker 30 W with impedance 4 Ohm. See this circuit schematic below : Click image to view large Capacitor thats connect legs IC 4 and 3 is 1 nF . And capacitor thats connect legs IC 9 and 3 is 1 nF. For the input capacitor at 1 uF ( L and R ) for output capacitor at 1000uF with voltage 50 V or higher.

This circuit is used to monitor the battery voltage to display a dual-colored LED status of the battery to. If the LED “green”battery voltage exceeds 11.9 volts. If the yellow LED , battery voltage 11.9 to 11.5 volts. If the LED is “red” If the battery voltage below 11.5 volts. You can of course change the trigger points by the trimmer resistors and / or changing the value of the resistors in the divider. A dual op amp is used as a comparator. The green LED on the board, until the voltage exceeds 11.5 volts. The red LED illuminates when the voltage falls below 11.9 volts to the circuit. Therefore, in the 11.9 to 11.5 volts, both LEDs are on, producing a slightly yellow color. When the voltage falls below 11.5 V, the green LED , and now only the red LED flashes to indicate low voltage. Parts List R1=1K2 R2-3-4=680R R5=15K R6=10K R7-8-9-10=1K IC1=LM324 D1=5V6 /0.5W Zener D2-3-4-5=LED RV1=10K trimmer  Is recommended that multi-shaper for V1 and V2. Muti-trimmer makes it much easi...

Kenwood Car Stereo Lets You Listen To The Future Of Car Audio. -  This brand is a household name for every car audio enthusiast. Mention the name Kenwood car stereo and they will know what you’re talking about.  Kenwood car stereos have produced high quality consumer electronics, test equipment and communication equipment since 1946. Kenwood car stereos primarily specialize in the design, engineering and manufacture of wireless communication infrastructure but are also renowned in the production consumer mobile and home entertainment systems. Kenwood car stereos are also committed to creating the finest quality components with state of the art technologies that has earned them a huge following in the audio products scene. At present, Kenwood car stereos have a very impressive product lineup that would make anyone drool over, whether he is an audio enthusiast or not. For the regular Joe who isn’t really into technical stuff, and is just looking for something nice to put into hi...

Entertainment in the form of music, news or even movies, generated from a series of audio devices found in a car. The series device known as a car audio system. What tool or device contained in car audio system? Car Head Unit - Head unit is the core of a car audio system, part of the car audio system that plays sound. The continued development of technology makes the head unit is no longer only serve as a radio receiver FM / AM CD player and a player, some have additional functions to be able to play MP3s. There is also a car head unit that has the ability to play DVDs complete with monitors and can be connected with IPOD. Power Amplifier - The function of the power amplifier is to amplify the signal coming out of the head unit. In the world of various types of car audio power amplifiers are divided into several classes, such as class A, B, AB, and D. Each class power amplifier has the advantage that its usefulness can be tailored to our needs in building a car audio system. In additio...

Car Stereo Audio Amplifier with TDA1553CQ Circuit Diagram This is a stereo audio amplifier for your car. The ambit is powered by a distinct IC TDA1553 with some alien components, this IC will handle your stereo car audio system. The TDA1553CQ is a caked chip class-B achievement amplifier in a 13-lead artificial DIL-bent-SIL ability package. It contains 2×22 W amplifiers in BTL configuration. The accessory is primarily developed for car radio applications. Special features of the device are: 3-state mode switch · standby: low supply current (<100> Loudspeaker protection When a short-circuit to ground occurs, which forces a DC voltage across the loudspeaker of >= V, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to <= V. Pin 12 detects the status of the protection circuit (e.g. for diagnostic purposes). Short-circuit protection If any output is short-circuited to ground during the standby mode, it becomes impossible to swit...

A close call on the road can really focus your mind on the importance of having a battery monitor in a car. I had been enjoying a pleasant week of traveling around the countryside at a leisurely pace and taking in the beautiful scenery each day. It wasn't until the final day, with the big rush to return home, that I had to drive at night.My home is deep in the country and on the road I was traveling the closest petrol station may be 80km away. I was traveling through an area that is full of open-cut coal mines and large heavily loaded semi-trailers constantly pound the roads, traveling at quite high speeds. It was around 8pm at night and everything was very dark no street lights or house lights anywhere. Just as I was going up a hill, the lights began to dim and the engine coughed. A large semi-trailer loomed in the rear-vision mirror as I pushed the clutch in and tried to restart. My speed was falling rapidly and my lights were blacked out - I was like a sitting duck in the midd...

Minimum Voltage required for this circuit  8 volt and maximum voltage 28 volt . Its can use to amplifier on the electronic devices such us Radio , DVD , MP4 , MP5 , and etc. To amplify the signal sound to audio sound , Maximum output power 2 x 20 Watts with impedance 4 ohm. The circuit is stereo amplifier. You can use the circuit to car amplifier because support to subwoofer speaker. See schematic diagram below :

The Car Temperature Gauge is basically the same circuit as March's project with some minor changes to the input circuit. This circuit will display the water temperature to 1 degree resolution.

For those who love tunes and the ability to take them along wherever you may roam, there are some great auto sound systems that allow you to basically plug in your favorite tunes to play as you go. It doesn't really matter which style of MP3 player you use, most of the newer auto sound systems at least have the ability to read and translate the material from these players into great music for you to enjoy on your ride by simply plugging your MP3 player into the car stereo. Many of us find that lugging around an MP3 player with all of our favorite tunes (or at least most of them-with up to 40 gigs of hard drive space it might take a while to fill completely) is much easier and more practical than attempting to lug around a huge case of CDs. It is also great for those of us who find ourselves disappointed when we purchase CDs only to find that we really only like one or two songs. Now we can simply download the songs we know and love while avoiding those we are uncertain about or at ...

Here is a simple circuit that starts playing the car horn whenever your car is in reverse gear. The circuit (refer Fig. 1) employs dual timer NE556 to generate the sound. One of the timers is wired as an astable multivibrator to generate the tone and the other is wired as a monostable multivibrator. Circuit diagram :   Fig. 1: Car reverse horn Circuit Diagram Working of the circuit is simple. When the car is in reverse gear, reverse-gear switch S1 of the car gets shorted and the monostable timer triggers to give a high output. As a result, the junction of diodes D1 and D2 goes high for a few seconds depending on the time period developed through resistor R4 and capacitor C4. At this point, the astable multivibrator is enabled to start oscillating. The output of the astable multivibrator is fed to the speaker through capacitor C6. The speaker, in turn, produces sound until the output of the monostable is high. When the junction of diodes D1 and D2 is low, the astable multivibrator...

For a few pounds you can buy a kit from any automotive accessory shop that will allow your car to be fitted with a central-locking door system. Such a kit essentially comprises a number of motors. There is also a control unit that enables the whole system to function. Here we show an example of such a unit. There are 5-wire motors and 2-wire motors. The 5-wire version is used in doors that have a key-lock.   There are 2 connections for the motor itself and 3 connections for the sensor part (an ‘open’ and a ‘close’ contact). These sensors determine whether the door is to be unlocked or locked. If there is no key lock in the door, these sensors are superfluous and a 2-wire motor can be used. The polarity of the motor determines whether the locking mechanism goes up or down. By making a circuit that simply reverses the polarity of the motor, the door can be either locked or unlocked. The winding of the motor is connected between M1 and M2 in the schematic. When relay Re1 is energised...