Power Filter Regulated for car by LM1084

When you lead to play MP3 or laptop computer come to apply to an automobile. Sometimes may born noise problem has from electricity automobile system. I thinks Power Filter Regulated for car by LM1084-12 may help solve a problem this get.

Because of using way LC filter and IC LM1084-12 (5A Low Dropout Positive Regulators) as a result can help regulate voltage well. If there is exceed noise 12V more although a little just will change this circuit has a little. And this circuit still can give the trend tall arrives at 5A can apply to the equipment cover very. The detail is other see from circuit picture and original website

 

 

http://linuxcar.sone.jp/reg.en.html

Basic Step up voltage DC to DC converter by 74C14

When you want to experience build Step up voltage DC to DC converter. I thinks this circuit basically the base certainly. By use 74C14 integrated digital number circuits are pillar equipment. In the principle at the beginning can modify 1.5V DC electricity pressures have to 6V DC. With the techinque LC booster up voltage. For other detail , see in the circuit and original website

 

 

http://www.rowan.sensation.net.au/electronics/stepup.html better sir.

Easy DC Converter 12V to 24V

A friend of me wants the circuit enhances Voltage 12VDC from be 24VDC or DC to DC Converter 12V to 24V. By fix reveal that be the circuit is simple , build not difficult. I then advise this circuit try out think use just Transistors D1616 = 2 pcs. with transformer the small-sized , mix with other equipment a little only again. Follow a picture has can to use this circuit with small fan motor.

http://www.circuitpowersupply.com/circuitblog/easy-dc-converter-12v-to-24v/

Power Supply Regulator Variable 3 - 24 Volt 3 Amp By LM1458 and 2N3055

This regulated power supply can be adjusted from 3 to 25 volts and is current limited to 2 amps as shown, but may be increased to 3 amps or more by selecting a smaller current sense resistor (0.3 ohm). The 2N3055 and 2N3053 transistors should be mounted on suitable heat sinks and the current sense resistor should be rated at 3 watts or more.

Voltage regulation is controlled by 1/2 of a 1558 or 1458 op-amp. The 1458 may be substituted in the circuit below, but it is recommended the supply voltage to pin 8 be limited to 30 VDC, which can be accomplished by adding a 6.2 volt zener or 5.1 K resistor in series with pin 8. The maximum DC supply voltage for the 1458 and 1558 is 36 and 44 respectively. The power transformer should be capable of the desired current while maintaining an input voltage at least 4 volts higher than the desired output, but not exceeding the maximum supply voltage of the op-amp under minimal load conditions. The power transformer shown is a center tapped 25.2 volt AC / 2 amp unit that will provide regulated outputs of 24 volts at 0.7 amps, 15 volts at 2 amps, or 6 volts at 3 amps. The 3 amp output is obtained using the center tap of the transformer with the switch in the 18 volt position. All components should be available at Radio Shack with the exception of the

 
http://ourworld.compuserve.com/homepages/Bill_Bowden/