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An overload condition in an inverter may  permanently  damage  the  power transistor array or burn off the transformer. Some of the domestic inverters sold in the market do not feature an overload shutdown facility, while those incorporating this feature come with a price tag.the circuit presented here is an overload detector which shuts down the inverter  in  an  overload  condition.  Circuit diagram: Inverter Overload Protector With Delayed Auto Rest Circuit Diagram It  hasthe following desirable features: It shuts down the inverter and also provides  audio-visual  indication  of  the overload condition. after  shutdown,  it  automatically restarts  the  inverter  with  a  delay  of  6 seconds. thus, it saves the user from the inconvenience  caused  due  to  manually resetting the system or running around in darkness to reset the system at night. It  permanently  shuts  down  the inverter  and  continues  to  give  audio warning,  in  case  there  are  more  than three  succes...

A good way to spend a relaxing afternoon is to be in a quiet place with just the right amount of sun or shade, drinks within reach and listening to your favourite songs on MP3 or CD. You doze off and by the time you wake up again the audio equipment has dropped silent due to flat batteries. What a pity! The simple circuit shown can prevent this embarrassing situation by de-actuating a relay when no audio signal is detected for about two seconds. Auto-off for Audio Gear Circuit Diagram The circuit consists of a sensitive LM358 based comparator, IC1A, which keeps monostable IC2A (a 4538) triggered as long as an audio signal is detected at the input. Via coupling capacitor C1 the circuit takes its input signal from the ‘hot’ side of the loudspeaker or headphones in your audio gear. The monostable will time out 2 s after being triggered, the delay being deter-mined by R6 and C3.

Finding the best amplifier for your auto sound system can be a lot easier if you take the time ahead of time to learn what you need and what will work best with the sound system you've selected for your car, truck, or SUV. It helps to understand what an amplifier does in order to purchase the one that will best suit your needs. An amplifier takes a small sound, adds a little boost of its own, and then turns it into a big sound. The more power your amplifier has, the better quality of sound it will provide. An underpowered amplifier will have a thin, tinny sound that is rather unattractive in an auto sound system, or any other sound system for that matter. You should also take care to remember that the power rating of an amplifier is the maximum power it is capable of expending not the amount that it will regularly use. The RMS rating of an amplifier is a good indication of its power output. One thing that is important to remember is that you should never buy an amplifier based on t...

This Auto Anti-Hijack Alarm Circuit Diagram was designed primarily for the situation where a hijacker forces the driver from the vehicle. If a door is opened while the ignition is switched on - the circuit will trip. After a few minutes delay - when the thief is at a safe distance - the Siren will sound. Where it differs from the first two alarms - is in what happens next. I'm obliged to Victor Montanez from the USA who suggested that the engine cut-out should not operate - until the vehicle comes to a stop. That way - the engine will not fail suddenly or unexpectedly. And the hijacker will retain control. I haven't been able to implement Victor's excellent suggestion completely - because I couldn't think of a simple, reliable and universally applicable way of sensing when the vehicle has come to a stop. Instead - I have postponed engine failure until the ignition is switched off. Once the thief turns off the ignition - the engine will not re-start. Clearly - there is ...

If you're in the market for a new auto sound system you might want to seriously take a moment and consider whether or not you would be benefited by subscribing to either Sirius or XM Satellite Radio. Both of these subscription-based services have something wonderful to offer their subscribers and both of them require specialized equipment in order to operate. This means if you are going to wish to use either service, you will need to have decided which service before you have your auto sound system installed. It really doesn't matter which of these you choose they each have different features that will appeal to a wide variety of audiences. You will find some wonderful competition among the two not only by way of music radio but also talk radio. If you really love talk radio you really need to subscribe to one of these in order to find a treasure chest of talk radio gems. You will find everything from the mundane to the controversial. From Oprah to Howard Stern exist in the rea...

We live in a world where music is our constant companion. We take it with us to the beach, to work, to exercise, even while riding bikes or talking on our cell phones. It only makes sense that in our cars we would like to have the best possible auto sound systems our hard earned dollars can buy. The problem is that new technology is being introduced to the market each and every day and many of us feel as though if we hold our breath just a little bit longer something even better and more spectacular will come along. We know that we will absolutely want to kick ourselves if we buy in to "this or that" company's auto sound system that was phenomenal yesterday, just before the next great thing hits the market. The truth is that superior auto sound system technology exists already and the question isn't if it will hit the market but rather when. And when seems to be a pretty big question when it comes to emerging technologies. There are always so many things that control ...

The auto sound systems of today are much more involved and complicated than the simple car stereo and speakers of years long past. Today's sound systems have all kinds of bells and whistles that many us could have only imagined during our younger years. In fact, it is quite possible that many of us did imagine these and those imaginings are how they came to be. One thing you need to do before you even begin to put the auto sound system of your dreams together is learn what kinds of components exist, how they work together, and which ones you really think you need as part of your auto sound system and which components you honestly feel you can live without. Life is about compromise and most of us will readily admit that we are quite unlikely to ever use all the bells, whistles, and upgrades that are made available to us within our lifetimes. I don't know about you, but my cell phone has features I've never even gotten around to learning how to use. I know I can use them and...

If you are one of the many people around the world who happens to be into cars and the new pastime called 'modding' I'm sure you have considered the implications of modding your auto sound system. For many the idea of modifying an automobile is very exciting. It's a way to take the standard canvas purchased from the dealer and turn it into a work of art that you drive to work and play each and every day. The same theory holds for your sound system as well. You can take the basic pieces and parts and turn them into something so much more than they were to begin with. If that isn't enough you can purchase all kinds of LED lights and other nifty gadgets that glow and go along with your car while dancing to the beat. If you want to make a splash driving down any boulevard, this is definitely one way to not only be seen but also leave a lasting impression. Your creative genius with your auto sound system will cause quite a stir and give plenty of people much to discuss t...