Identify diagram: power

Showing posts with label power. Show all posts

Wednesday, 29 May 2013

6 Watt stereo power amplifier schematic

Basiccally,this
amplifier works with the IC, which is where ic is associated with
several other components in the supply and use DC voltage, which
corresponds to the needs of IC above course on the circuit schematic.
For IC , stands intregated circuit used is ic LM379 which has a maximum
6 Watt stereo output. This IC manufactered by NS and with SDIP-14
package. While other components needed in the circuit schematic , you
can see components of the list below.

Component List :

Resistor
R1___________________2K
R2___________________2K
R3___________________33K
R4___________________33K
R5___________________1M
R6___________________1M
R7___________________10R 2W
R8___________________10R 2W

Capacitor
C1___________________4.7uF
C2___________________4.7uF
C3___________________470uF
C4___________________470uF
C5___________________470uF
C6___________________100n
C7___________________100n

IC
IC1___________________LM379

Friday, 12 April 2013

Simple Audio Power Meter Circuit

This simple circuit indicates the quantity of energy that goes to a loudspeaker. The dual-color LED presentations green at an applied energy degree of about 1 watt. At 1.5 watts it glows orange and above three watts it is vivid crimson. The circuit is attached in parallel with the loudspeaker connections and that is energyed from the audio signal. The further load that this characterizes is 470 Ohm (R1//R3) will no longer be a problem for any amplifier. During the positive 1 of 2 cycle of the output sign the inexperienced LED in the dual-color LED will probably be turned on, supplied the voltage is sufficiently excessive.

At better output voltages, T1 (depending on the voltage divider R2/R1) can begin to conduct and the fairway LED will go out. During the terrible half of cycle the red LED is driven by the use of R3 and can activate when the voltage is high enough. In the transition area (where T1 habitss extra and extra and ‘throttles’ the golf inexperienced LED as a result) the combination of red/green provides the orange colour of the dual-LED. By selecting appropriate prices for the resistors the facility stages will additionally be adjusted to suit.

Circuit diagram:

$\"simple-audio-power-meter-circuit-diagram1\"$ Audio Power Meter Circuit Diagram

The worths chosen here are for conventional lounge use. You will almost definitely be stunned at how loud you have to turn your amplifier up ahead of you get the LEDs to go! The resistors can be zero.25 W sorts, supplied the amplifier does now not ship greater than forty W constantly. Above this energy the transistor may not be that happy both, so watch out for that too. Because T1 is utilized in saturation, the gain (Hfe) is on no account important and any equivalent type can be used. The power degrees talked about are valid for 4-Ohm audio system. For 8-Ohm audio system the entire resistor values have to be divided by using two.

Soft Start For Switching Power Supply

Switching energy provide whose output voltage is drastically lower than its input voltage has a captivating professionalperty: the present drawn by means of it's smaller than its output current. However, the enter energy (UI) is, of course, larger than the output power. There is any other aspect that needs to be watched: when the input voltage at switch-on is too low, the regulator will tend to draw the full current. When the professionalvision can no longer deal with this, it fails or the fuse blows. It is, subsequently, a just right idea to disable the regulator at change-on (via the on/off input). except the related capacitor has been charged. When the regulator then begins to draw current, the charging current has already dropped to a stage which does not overload the voltage supply.

Circuit diagram:
$\"Soft$

Soft Start Circuit For Switching Power Supply

The circuit within the diagram provides an output voltage of 5 V and is provided by a 24 V source. The regulator needn't be disabled except the capacitor is fully charged: when the possible throughout the capacitor has reached a stage of 1 of 2 or extra of the enter voltage, all is smartly. This is why the zener diode within the diagram is rated at 15 V. Many regulators produced via National Semiconductor have an crucial on/off change, and that is used within the present circuit. The enter is intended for TTL indicators, and usually consists of a transistor whose base is available externally. This implies that the next switching voltage could additionally be applied by the use of a collection resistor: the worth of this in the existing circuit is 22 kΩ. When the voltage throughout the capacitor reaches a degree of about 17 V, transistor T1 comes on, whereupon the regulator is enabled.

Source: National Semiconductors

Wednesday, 10 April 2013

Non Contact Power Monitor circuit

Here is a simple non-contact AC power monitor for home appliances and laboratory equipment that should remain continuously switched-on. A fuse failure or power breakdown in the equipment going unnoticed may cause irreparable loss. The monitor sounds an alarm on detecting power failure to the equipment. The circuit is built around CMOS IC CD4011 utilising only a few components. NAND gates N1 and N2 of the IC are wired as an oscillator that drives a piezobuzzer directly. Resistors R2 and R3 and capacitor C2 are the oscillator components. The amplifier comprising transistors T1 and T2 disables the oscillator when mains power is available. In the standby mode, the base of T1 picks up 50Hz mains hum during the positive half cycles of AC and T1 conducts.

Circuit diagram:

Non-Contact Power Monitor circuit diagram

This provides base current to T2 and it also conducts, pulling the collector to ground potential. As the collectors of T1 and T2 are connected to pin 2 of NAND gate N1 of the oscillator, the oscillator gets disabled when the transistors conduct. Capacitor C1 prevents rise of the collector voltage of T2 again during the negative half cycles. When the power fails, the electrical field around the equipment’s wiring ceases and T1 and T2 turn off. Capacitor C1 starts charging via R1 and preset VR and when it gets sufficiently charged, the oscillator is enabled and the piezobuzzer produces a shrill tone. Resistor R1 protects T2 from short circuit if VR is adjusted to zero resistance.

The circuit can be easily assembled on a perforated/breadboard. Use a small plastic case to enclose the circuit and a telescopic antenna as aerial. A 9V battery can be used to power the circuit. Since the circuit draws only a few microamperes current in the standby mode, the battery will last several months. After assembling the circuit, take the aerial near the mains cable and adjust VR until the alarm stops to indicate the standby mode. The circuit can be placed on the equipment to be monitored close to the mains cable.

Source by : Streampowers

Saturday, 6 April 2013

2N3055 Power Amplifier

Simple and low cost. The optimal accumulation voltage is about 50V, but this amp assignment from 30 to 60V. The acute ascribe voltage is about 0.8 – 1V.
As you can see, in this architecture the apparatus accept a big tolerance, so you can body it about of the components, which you acquisition at home. The and transistors can be any NPN blazon ability transistor, but do not use Darlington types… The achievement ability is about 60W.

Click to view larger 2N3055 Power Amplifier Circuit Schematic Figure

- capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequncies are accepting louder.

- capacitor C2 regulates the college frequencies (treble), as the capacitance grows, the college frequencies are accepting quiter.

- this is a chic B amplifier, this means, that a accepted charge breeze through the end transistors, alike if there is no arresting on the input. This accepted can be adapted with the 500Ω trimmer resistor. As this accepted incrases, the complete of the amplifier gets better, but the end transistors are added heating. But if this accepted decrases, the transistors are not heating so much, but the complete gets worse…

Friday, 5 April 2013

Fuse Box Ford 2002 F 350 Diesel Power Distribution Diagram

Fuse Box Ford 2002 F-350 Diesel Power Distribution Diagram - Here are new diagram for Fuse Box Ford 2002 F-350 Diesel Power Distribution Diagram.

Fuse Box Ford 2002 F-350 Diesel Power Distribution Diagram

Fuse Panel Layout Diagram Parts: Fuse Panel Layout Diagram Parts: fuel pump relay, ignition switch, junction box fuse, blower relay, PCM power relay, accessory delay relay, transfer case shift relay, power seat control module, auxiliary power socket, Daytime running light resistor, main light switch, multi function switch, anti lock brake system, power window, door lock switch, park lamp relay, IDM relay, trailer electronic brake controller, radio, trailer park lamp, generator/voltage regulator, main light switch, headlamp, trailer tow package, air bag diagnostic module, trailer tow package, trailer back up lamp relay, trailer battery charge relay.

Thursday, 4 April 2013

1000W Power Amplifier

Power amplifier has up to 1000 Watt power, this circuit made one channel only so if you want to create a stereo in it must be made one again, actually this is more suitable power amplifier in use for Sound System or outdoor, so if only in use for the house I think is less suitable.

Maybe 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 is not a real power which is issued by the Power Amplifier, but counting all the speakers that there is, for example: if there are 5 pieces of speakers on each channel and each speaker has a power of 10 W then it is 100 W PMPO.

1000W Power Amplifier schematics

Part List 1000W amplifier

While this 1000 Watt Power Amplifier minimal use transformer 20 Ampere. And the output of Power Amplifier DC voltage contains approximately 63 volts, with currents and voltages of this magnitude, this 1000 Watt Power Amplifier will not hesitate hesitate to destroy your woofer speakers to connect. To overcome that then before the speaker on connects to 1000 Watt Power Amplifier must be in pairs Speaker Protector.

Actually if you want to create a Power Amplifier with great power does not have to make a Power Amplifier with great power. Example: you want to create a Power Amplifier with 10 000 Watt power. You do not have to assemble a Power Amplifier with power of 10,000 watts, but you assemble the power Power Amplifier Small but many, such as you assemble the Power Amplifier with 1000 Watts of power for as many as 10 pieces, it will produce 10 000 Watt Power Amplifier helpless.

Circuit uses power transistors pair of 5 x 5 x 2SA1216 and 2SC2922 and 2SC1583 use a differential amplifier that actually contains 2 pieces of transistors that are in containers together. Why use such built-in amplifier differental tujuanya so identical / similar, could have uses 2 separate transistors but can result in amplifier so it is not symmetrical.

Tips combining speaker.

To get the speakers with great power combining techniques can be used in parallel series, combining each group of speakers should sepaker they will have the same impedance, the same type (Woofer, Mid Range or tweeter) and the same power. Number of merging these speakers should consists of 4 , 9, 16 ff, see picture

Speaker wiring

Example: The number of speakers have 4 pieces each of its 200 Watt power generated will be a speaker at = 200 x 4 = 800 Watt. If there are 9 speakers 200 W then the result = 9 x 200 W = 1800 Watt.

Wednesday, 3 April 2013

USB Power Injector For External Hard Drives

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A portable USB hard drive is a great way to back up data but what if your USB ports are unable to supply enough "juice" to power the drive? A modified version of the Silicon Chip Usb Power Injector is the answer. For some time now, the author has used a portable USB hard drive to back up data at work. As with most such drives, it is powered directly from the USB port, so it doesn’t require an external plug pack supply.

Projects Picture:

In fact, the device is powered from two USB ports, since one port is incapable of supplying sufficient current. That’s done using a special USB cable that’s supplied with the drive. It has two connectors fitted to one end, forming what is basically a "Y" configuration (see photo). One connector is wired for both power and data while the other connector has just the power supply connections. In use, the two connectors are plugged into adjacent USB ports, so that power for the drive is simultaneously sourced from both ports.

USB Cable:

An external USB hard drive is usually powered by plugging two connectors at one end of a special USB cable into adjacent USB ports on the computer. This allows power to be sourced from both ports. According to the USB specification, USB ports are rated to supply up to 500mA at 5V DC, so two connected in parallel should be quite capable of powering a portable USB hard drive – at least in theory.

Complete Project:

Unfortunately, in my case, it didn’t quite work out that way. Although the USB drive worked fine with several work computers, it was a "no-go" on my home machine. Instead, when it was plugged into the front-panel USB ports, the drive repeatedly emitted a distinctive chirping sound as it unsuccessfully tried to spin up. During this process, Windows XP did recognise that a device had been plugged in but that’s as far as it went – it couldn’t identify the device and certainly didn’t recognize the drive. Plugging the drive into the rear-panel ports gave exactly the same result. The problem wasn’t just confined to this particular drive either. A newly-acquired Maxtor OneTouch4 Mini drive also failed to power up correctly on my home computer, despite working perfectly on several work computers.

Circuit diagram:

The revised USB Power Injector is essentially a switch and a 5V regulator. The Vbus supply from USB socket CON1 turns on transistor Q1 which then turns on power Mosfet Q2. This then feeds a 6V DC regulated supply from an external plug pack to regulator REG1 which in turn supplies 5V to USB socket CON2.

Source: Silicon Chip 26 June 2008

Thursday, 28 March 2013

Variable Dc Power Supply

Voltage Range: 0.7V to 24V, Current Range: 50mA to 2A

A variable dc power supply is one of the most useful tools on the electronics hobbyists workbench. This circuit is not an absolute novelty, but it is simple, reliable, "rugged" and short-proof, featuring variable voltage up to 24V and variable current limiting up to 2A. You can adapt it to your own requirements as explained in the notes below.

Circuit Diagram :

Variable DC Power Supply Circuit Diagram

Parts:

P1 = 500R
P2 = 10K
R1 = 2.2K-1/2w
R2 = 2.2K-1/2w
R3 = 330R
R4 = 150R
R5 = 1R-5W
C1 = 35V-3300uF
D1 = 1N5402
D2 = 1N5402
D3 = 5mm Red Led
C2 = 63V-1uF
Q1 = BC182
Q2 = BD139
Q3 = BC212
Q4 = 2N3055
SW1 = SPST Mains Switch
T1 = 36VCT-Transformer

Notes:

P1 sets the maximum output current you want to be delivered by the power supply at a given output voltage.
P2 sets the output voltage and must be a logarithmic taper type, in order to obtain a more linear scale voltage indication.
You can choose the Transformer on the grounds of maximum voltage and current output needed. Best choices are: 36, 40 or 48V center-tapped and 50, 75, 80 or 100VA.
Capacitor C1 can be 2200 to 6800µF, 35 to 50V.
Q4 must be mounted on a good heatsink in order to withstand sustained output short-circuit. In some cases the rear panel of the metal box in which you will enclose the circuit can do the job.
The 2N3055 transistor (Q4) can be replaced with TIP3055 type.

Source: Red Free Circuit Design

Sunday, 24 March 2013

Power Supply Failure Alarm

Most of the power supply failure indicator circuits need a separate power-supply for them-selves. But the alarm circuit presented here needs no additional supply source. It employs an electrolytic capacitor to store adequate charge, to feed power to the alarm circuit which sounds an alarm for a reasonable duration when the mains supply fails. During the presence of mains power supply, the rectified mains voltage is stepped down to a required low level.

Power Supply Failure Alarm Circuit Diagram

A zener is used to limit the filtered voltage to 15-volt level. Mains presence is indicated by an LED. The low-level DC is used for charging capacitor C3 and reverse biasing switching transistor T1. Thus, transistor T1 remains cut-off as long as the mains supply is present. As soon as the mains power fails, the charge stored in the capacitor acts as a power-supply source for transistor T1. Since, in the absence of mains supply, the base of transistor is pulled ‘low’ via resistor R8, it conducts and sounds the buzzer (alarm) to give a warning of the power-failure.

With the value of C3 as shown, a good-quality buzzer would sound for about a minute. By increasing or decreasing the value of capacitor C3, this time can be altered to serve one’s need. Assembly is quite easy. The values of the components are not critical. If the alarm circuit is powered from any external DC power-supply source, the mains supply section up to points ‘P’ and ‘M’can be omitted from the circuit.

Following points may be noted:

1. At a higher DC voltage level, transistor T1 (BC558) may pass some collector-to-emitter leakage current, causing a continuous murmuring sound from the buzzer. In that case, replace it with some low-gain transistor.

2. Piezo buzzer must be a continuous tone version, with built-in oscillator. To save space, one may use five small-sized 1000µF capacitors (in parallel) in place of bulky high-value capacitor C3.

Source :http://www.ecircuitslab.com/2011/11/power-supply-failure-alarm.html