Mutchus

Using a mobile phone while driving is dangerous. It is also against the law. However, you can use your mobile phone as a powerful music player with the help of a stereo power amplifier. This does away with the need of a sophisticated in-dash car music system. Most mobile phones have a music player that offers a number of features including preset/ visit page. 44 Watt Mobile Car Stereo Amplifier  

This charger will quickly and easily charge most any lead acid battery. The charger delivers full current until the current drawn by the battery falls to 150 mA. At this time, a lower voltage is applied to finish off and keep from over charging. When the battery is fully charged, the circuit switches off and lights a LED, telling you that the cycle has finished. Circuit diagram Parts R1 500 Ohm 1/4 W Resistor R2 3K 1/4 W Resistor R3 1K 1/4 W Resistor R4 15 Ohm 1/4 W Resistor R5 230 Ohm 1/4 W Resistor R6 15K 1/4 W Resistor R7 0.2 Ohm 10 W Resistor C1 0.1uF 25V Ceramic Capacitor C2 1uF 25V Electrolytic Capacitor C31000pF 25V Ceramic Capacitor D1 1N457 Diode Q1 2N2905 PNP Transistor U1 LM350 Regulator U2 LM301A Op Amp S1Normally Open Push Button Switch MISC Wire, Board, Heatsink For U1, Case, Binding Posts or Alligator Clips For Output Notes 1. The circuit was meant to be powered by a power supply, which is why there is no transformer, rectifier, or filter capacitors on the schematic. The...

Most cars do not have delayed interior lights. The circuit presented can put this right. It switches the interior lights of a car on and off gradually. This makes it a lot easier, for instance, to find the ignition keyhole when the lights have gone off after the car door has been closed. Since the circuit must be operated by the door switch, a slight intervention in the wiring of this switch is unavoidable. When the car door is opened, the door switch closes the lights circuit to earth. When the door is closed (and the switch is open), transistor T1, whose base is linked to the switch, cuts off T2, so that the interior light remains off. When the switch closes (when the door is opened), the base of T1 is at earth level and the transistor is off. Car Interior Lights Delay  Circuit diagram: Capacitor C1 is charged fairly rapidly via R3 and D1, whereupon T2 comes on so that the interior light is switched on. When the door is closed again, T1 conducts and stops the charging of C1. Howe...

The ASUS Eee is a fantastic ultra-portable notebook with almost everything required for geeks (and nothing that isn’t). Plus it features fantastic build quality and is very well priced. If you live in New Zealand you can get them from DSE; at the time of writing they are the exclusive supplier. I worked out it’s the same cost as importing one once you include all the duties and tax, plus you get the advantage of a proper NZ-style mains charger. Anyway, being so small I thought it would be nice to be able to carry this around in the car. Unfortunately I couldn’t find a car charger available anywhere at the time so I decided to tackle the problem myself. As a bonus this provides an opportunity for an external high-capacity battery. Commercial Equivalent: I thought at this stage it would be worth noting that a commercial car charger is now available for less than it cost me to build this from Expansys and is available in most countries (select your location on their site). It outputs 9.5v...

Even the best car alarm is useless if you forget to set it upon leaving your car, whence this circuit. The relay has a make and a break contact: the  former is necessary to delay the switching in of the  alarm after you have got out of your car, and the  latter serves to switch on the car alarm proper. Immediately on re-entering your car, you must press the hidden switch, Si. This causes silicon-controlled rectifier Thi to conduct so that the relay is energized. At the same time, the green LED lights to indicate that the alarm is switched off.   Circuit diagram :  Best Automatic Car Alarm Circuit Diagram As soon as the ignition is switched off, T, is off, T2  is on, and the buzzer sounds. At the same time,  monostable IC1 is triggered, which causes T3 to  conduct and the red LED to light. The silicon- controlled rectifier is then off, and D4 is reverse  biased, but the relay remains energized via its make  contact for a short time,...

Description  This astonishingly simple circuit allows one or two powerful 12V 21W car bulbs to be driven in flashing mode by means of a power MosFet. Devices of this kind are particularly suited for road, traffic and yard alerts and in all cases where mains supply are not available but a powerful flashing light are yet necessary. Circuit Diagram: Parts: R1 = 6.8K R2 = 220K R3 = 22K C1 = 100uF-25V C2 = 10u-25V D1 = 1N4002 Q1 = BC557 Q2 = IRF530 LP1 = 12V-21W Car Filament Bulb (See Notes) SW1 = SPST Switch (3 Amp minimum)  Notes: Flashing frequency can be varied within a limited range by changing C1 value. As high dc currents are involved, please use suitably sized cables for battery and bulb(s) connections.  Source http://www.extremecircuits.net/2009/07/car-bulb-flasher.html

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.

Look at any good car stereo system and you’ll probably see a Pioneer car stereo unit plugged into the console. Alongside with quality speakers and a strong lineup of accessories like LCD panels and navigational devices, Pioneer products/Pioneer car stereos have earned a huge following the world over.   The Pioneer Company is a Tokyo-based corporation, and is one of the world leaders in digital entertainment products. The Pioneer Company was first founded in 1938 in Tokyo as a small radio and speaker repair shop business but today, they are recognized as a leader in technology advancements in the consumer electronics industry. The company is truly deserving of their name. They are respected for many innovations such as interactive cable TV, the Laser Disc player, developing the first Compact Disc player for the car and the first detachable face car stereo, DVD and DVD recording, plasma display, and organic electroluminescent display. Their strength in optical disc and display techn...

Whenever I'm in the car listening to my favourite CD, it always happens; my batteries go dead. To solve that problem, I built this extremely simple regulator circuit. It steps down the 12V from the lighter socket to 9V which is used by the CD player. Different CD players (I have a Sony Discman) may require different voltages, so just use the correct regulator. All the 78xx series regulators have the same pin out, so the circuit is universal. CD Player Adapter For Car Circuit Diagram Part           Total Qty.                       Description C1                      1                        1000uF 25V Electrolytic Capacitor    C2     ...

The usual chargers of battery automotive, are simple and cheap appliances that charge continuously the battery, with a rythm of few amperes, for the time where the appliance is ON. If the holder do not close in time the charger, the battery will overcharge and her electrolytic faculty are lost with evaporation or likely exists destruction of her elements. The charger of circuit exceeds these faults. It checks electronic the situation of charge of battery and it has circuit of control with retroaction, that forces the battery charge with biggest rythm until charge completely.  Circuit diagram: Car Battery 12v Charger Circuit Diaram When charge completely, it turns on one RED led (LD2). The charger has been drawn in order to charge batteries of 12V, ONLY. What should watch it from what it manufactures the circuit, they are the cables that connect the transformer with the circuit and in the continuity the battery, should they are big cross-section, so that heat when it passes from ...

  Basic operation of this amplifier is on IC TEA2021 , In this circuit minimum require voltage is 4 volts and maximum voltage 25 volts. Power output 14 Watt with 4 Ohm impedance. See this schematic.

This automobile stereo amplifier project is a class AB audio power amplifier using the Hitachi HA13118 module. It not only can be used in automobile application but also in any transportable or home amplifier process. It is simple to construct & has a maximum of outside parts. The module has a high power output from a low voltage supply using the bridge tied load system, & a high gain of 55dB. This project will be useful in applications where the input signal is a low level, without requiring the use of a separate pre-amplifier. This IC module has a built in surge protection circuit, thermal shutdown circuit, ground fault protection circuit & power supply fault protection circuit making it reliable. The Specifications of this project  D.C. Input : 8 – 18V at 1-2 A Power output : 18W maximum, 4 ohm load, 18V DC supply S/N ratio : > 70 dB THD : < 0.2% @ 1W Freq. Response : ~ 30 Hz to 30 kHz, –3 dB Input level : < 25 mV, for full output (G > 50dB) Input Impedan...