Thursday, August 28, 2014
Automatic Headlight Brightness Switch Circuit
When you drive on the way most of time, you can see some drivers drive their vehicles with their powerful head lights.As a result of it we cant drive our vehicles because at that time we become blind,Some times it causes for various road accidents.So I have introduce a new schema to switch your high beam to low beam automatically.when a vehicle comes in front of you automatically your head lights go to dim position.
Parts:
R1 5K 1/4W Resistor
R2, R3, R4 5K Pot
K1 Low Current 12V SPST Relay
K2 High Current 12V SPDT Relay
S1 SPST Switch
B1 Car Battery
MISC Case, wire, board, knobs for pots
Q1 NPN Phototransistor
Q2 2N3906 PNP Transistor
Note
1.S1 can on and off the schema.
2. B1 is, certainly, in the car already.
3. Connection A goes to the high beam schema, B goes to the headlight switch common and C connects to the low beam schema.
Police Lights associate crystal rectifier Project
This schema uses a 555 timer that is setup to each runn in associate Astable operative mode. This generates a nonstop output via Pin three within the type of a sq. wave. once the timers output changes to a high state this triggers the a cycle the 4017 4017 decade counter telling it to output consecutive sequent output high. The outputs of the 4017 ar connected to the LEDs turning them on and off.
Schematic
Parts List
1x - NE555 Bipolar Timer
1x - 4017 Decoded Decade
6x - 1N4148 Diode
1x - 1K Resistor (1/4W)
1x - 22K Resistor (1/4W)
2x - 4.7K Resistor (1/4W)
6x - 470 Resistor (1/4W)
1x - 2.2µF Electrolytic Capacitor (16V)
2x - BC547 NPN Transistor
2x - LED (Blue)
2x - LED (Red)
1x - 9V Voltage Battery
Single SVC Subwoofer Wiring
SVC Subwoofer Wiring
* One 1 ohm SVC subwoofer = 1 ohm amplifier load
* One 2 ohm SVC subwoofer = 2 ohm amplifier load
* One 4 ohm SVC subwoofer = 4 ohm amplifier load
* One 8 ohm SVC subwoofer = 8 ohm amplifier load
uninterrupted power supply circuit diagram
uninterrupted power supply schematic
The schema drawn pertains to a regular industrial UPS (Uninterruptible Power Provide), which shows how the batteries get control throughout an outage in electrical provide or variation beyond the normal limits with the voltage line, without having disruption on the operation supplying a steady regulated output (five Volts by LM7805) and an unregulated supply (twelve Volts).
The input to the primary winding with the transformer (TR1) is 240V. The secondary winding may be raised as much as 15 Volts in case the worth is at least twelve Volts operating two amp. The fuse (FS1) acts as being a mini schema breaker for defense versus short diagram, or a defective battery cell in actual fact. The presence of electrical power will cause the LED one to light. The light of LED will set off upon power outage along with the UPS battery will consider more than
The schema was designed to present alot more versatile pattern wherein it can be customized by making use of numerous regulators and batteries to generate regulated and unregulated voltages. Making use of two 12 Volt batteries in sequence and a good input 7815 regulator, can control a 15V provide.
How to Fix Switching Power Supply CPU Computer
When you turn on the computer but it not working, of course the problem is electrical conditions is not installed, or maybe the power supply is damaged. For a Mechanic/ Technician would check the power supply section. Once you open the block power supply on your computer will certainly replace the power supply with the new block.
But you have ever tried to fix Switching Power Supply CPU Computer, then where is the location of the damage?
Ive had some time fix (repair) Switching Power Supply CPU (Central Processing Unit). From experience Ive found on the transformer primary is connected to the Transistors (in heat sink) are damaged condition.
When replaced a fuse but still no outputs power in secondary, FET Transistors is damaged, replace this Transistor with new parts.
When you have replaced/ installed still not lit, try searching for the groove;
[TP = Test Probe];
- @ Measure the voltage of the (TP1) = 220VAC power source (be careful),
- @ (TP2) Fuse = 220VAC,
- @ (TP3) Diode Bridge on the positive voltage to the ELCO xx uF/450V = 250VDC,
- @ (TP4) Transformer Primary I = 250VDC,
- @ (TP5) FET transistor DRAIN / Collector (Transformer Primary II/ feedback)
- @ (TP6) check GATE/ Base = 2-6V, at the gate gets electricity from positive to 2x220KOhm. Resistor from Diode, some voltage to the IC (Integrated Circuit), when no voltage is trying to measure the value of the resistor. I often find damage to the resistor; its good to also replace the IC LM 3842, driver Transistor to GATE/Base if damaged.
- @ (TP7) check the voltage at each output, measured at the output diode cathode. When issuing voltage power supply switching means your CPU can already be used again. CPU Power Supply output voltage = 3V, 5V,-5V, 12V.
| How to Fix Switching Power Supply CPU(Computer) |
So from my experience, check the fuse, FET, IC LM 3842, 2x220KOhm series resistor, and the other on the transformer primary, and then check the output voltage on the secondary.
So, may be useful.
Follow the next articles from me about Power Supply,
Bustamsyah
So, may be useful.
Follow the next articles from me about Power Supply,
Bustamsyah
Pioneer AVIC F900BT Navigation Review
The Latest Version Of The AVIC Is Loaded With Features At A Budget Price
MSRP: $1,100
A few months ago I had the opportunity to testdrive the new AVIC F-series of navigation/multimedia source units in one of the various demo vehicles that Pioneer arranged for the press preview. The F-series basically replaces the D line, which ended with the D3. Like the latter, the new products are priced low enough that, value-wise, it would be a much better deal for people who want navigation to buy an AVIC F than one of the PNDs from the big three nav makers. After all, the AVIC-F900BT is superior in many ways to the D-series and cost![]()
s only a little over a grand, for which you get a lot of built-in media functionality, along with the navigation.
There were some glitches in the pre-production models at the preview- some of the same issues some users have experienced with the production models. But the new AVICs seemed very promising, and I looked forward to having the chance to use one of various source units in the line.
Affordable All-In-One
Read More..
MSRP: $1,100
A few months ago I had the opportunity to testdrive the new AVIC F-series of navigation/multimedia source units in one of the various demo vehicles that Pioneer arranged for the press preview. The F-series basically replaces the D line, which ended with the D3. Like the latter, the new products are priced low enough that, value-wise, it would be a much better deal for people who want navigation to buy an AVIC F than one of the PNDs from the big three nav makers. After all, the AVIC-F900BT is superior in many ways to the D-series and cost
There were some glitches in the pre-production models at the preview- some of the same issues some users have experienced with the production models. But the new AVICs seemed very promising, and I looked forward to having the chance to use one of various source units in the line.
Affordable All-In-One
Ostensibly, the AVIC-F900BT that I received for review is the complete package. The double-DIN unit with a 5.8-inch touchscreen has map data (from TeleAtlas) completely contained on a flash drive. A lot of nav users will be glad to hear that DVD-ROMs are no longer necessary. So you have navigation, DVD playback, and music galore via disc, iPod, a thumb drive, or an SD card, not to mention HD Radio and satellite radio with adapters, which have to be purchased separately. Conveniently, theres also a mini-jack connection on the face of the source unit. The 3.5mm mini-jack aux input is a great feature, but that too requires Pioneers CD-RM10 cable in order for you to connect an A/V device to the unit.
This AVIC also has you covered for Bluetooth. You can connect three phones and the F900BT will store 400 contacts; it allows you to be totally hands-free. That applies for accessing music from your iPod as well. The F900BT has voice recognition software (called the VoiceBox Conversational Voice Search Platform) that makes it possible for you to select music folders and tracks by voice command. As with a lot of voice command systems, it can have problems understanding your requests. Be it the Ford Sync, the AVIC-Z3, or a separate aftermarket Bluetooth kits-Ive yet to find a product that works as advertised in terms of the voice recognition quality. In theory, you can make calls, select tracks off your iPod, and even make some navigation commands just by using your voice. Its not perfect, but its better than not having the option. Caveats or not, the above features are a pretty amazing collection of options. They may be found on other pre-existing (and separate) products, but at $1,100, this seems to be a real steal.
Add the option for MSN Direct for traffic information, movie time listings, and a list of the gas stations with the best per gallon prices and more, and you can see why I say that the F900BT is the complete package. MSN Direct is a must-have. And the GOOG-411 service is a nice add-on feature. You can use it to search for and connect to local businesses via a toll-free number. The only thing that is important to me that the unit lacks is the ability for DVD-Audio or, say, SACD playback. But then when was the last time you actually bought a disc in one of those formats? OK, not big misses there. On the audio side, the F900BT takes care of business, and will probably be robust enough for most music fans. There are seven preset EQ curves; and you can make a couple of your own custom EQ settings. Theres also a three-band parametric EQ that allows you to select the Q factor, a highpass filter, adjustable loudness, and SLA (source level adjustment) to keep your volume settings consistent over different sources.
Navigating Potential
This AVIC also has you covered for Bluetooth. You can connect three phones and the F900BT will store 400 contacts; it allows you to be totally hands-free. That applies for accessing music from your iPod as well. The F900BT has voice recognition software (called the VoiceBox Conversational Voice Search Platform) that makes it possible for you to select music folders and tracks by voice command. As with a lot of voice command systems, it can have problems understanding your requests. Be it the Ford Sync, the AVIC-Z3, or a separate aftermarket Bluetooth kits-Ive yet to find a product that works as advertised in terms of the voice recognition quality. In theory, you can make calls, select tracks off your iPod, and even make some navigation commands just by using your voice. Its not perfect, but its better than not having the option. Caveats or not, the above features are a pretty amazing collection of options. They may be found on other pre-existing (and separate) products, but at $1,100, this seems to be a real steal.
Add the option for MSN Direct for traffic information, movie time listings, and a list of the gas stations with the best per gallon prices and more, and you can see why I say that the F900BT is the complete package. MSN Direct is a must-have. And the GOOG-411 service is a nice add-on feature. You can use it to search for and connect to local businesses via a toll-free number. The only thing that is important to me that the unit lacks is the ability for DVD-Audio or, say, SACD playback. But then when was the last time you actually bought a disc in one of those formats? OK, not big misses there. On the audio side, the F900BT takes care of business, and will probably be robust enough for most music fans. There are seven preset EQ curves; and you can make a couple of your own custom EQ settings. Theres also a three-band parametric EQ that allows you to select the Q factor, a highpass filter, adjustable loudness, and SLA (source level adjustment) to keep your volume settings consistent over different sources.
Navigating Potential
The main selling point for most consumers, of course, is going to be the navigation. The map data covers the U.S., including Alaska and Hawaii (and Canada) on a 2GB flash drive. That contains the usual list of POIs as well. The graphics are fine and the lane departure indicator is terrific, but the voice guidance could have provided faster alerts to turns on surface streets and exits off freeways, for example. But the bigger problem was that accessing data can test your patience. ![]()
Searching for a POI "around the current GPS location" requires a wait of a few seconds to get to the next menu window. Also, I looked for Nixons library locally as a tourist attraction, but it wasnt listed on the search result. When I typed it in on another search I finally got the address. So there are some things you might think should be more intuitive than it is; however, I should add that I find this kind of problem a lot with various nav devices. What compounds the issue of an already slow system is something more fundamental: I counted anywhere from 30 to 60 seconds for the system to load when I started the car. The only thing I could do during that time was insert a CD and adjust the volume. Whether or not this is a big deal will depend on your level of patience. I just dont happen to have a lot of it.
There are issues such as the above that make what was potentially an amazing product a decent product instead. The lesser-than-average visibility of the monitor, especially during the day, the average touchscreen responsiveness and the flat, difficult-to-use volume knob also detract from what was a great concept: a multimedia navigation unit priced for the masses. Early adopters of the AVIC F-series have encountered problems with the Bluetooth, iPod functionality, and the system loading time. On the F900BT, I experienced dropped calls as well. To address the different problems Pioneer released a firmware update. You can go to the companys website, www.pioneerelectronics.com and go to the navigation section. There are explicit directions for downloading the firmware and for loading it via SD card to your F900BT or other F-series unit (the F500BT is excluded). Youll find that it will improve the performance of a product, making it that much more worth the price. And ultimately, at this price point (and that is the point) there isnt another product with as much to offer and that is as easy to use while being so feature-rich. The question is: How much is too much for a product with great and various capabilities that are countered by some functionality issues? There are always value or quality trade-offs when you buy things. I would suggest you go for your own testdrive to determine if the new AVIC is worth it for you. I should note that the latest shipment of AVICs have the firmware included, which should make your decision to buy a little easier.
Key Features![]()
5.8-inch touchscreenMap data on flash driveVoiceBox for voice control of iPod and BluetoothMSN Direct (with subscription)Satrad (Sirius or XM) and HD Radio readySteering wheel control compatibility (optional, requires separate interface)DVD playbackSix-channel preamp outputs (front, rear, subwoofer)May need firmware updateThere are issues such as the above that make what was potentially an amazing product a decent product instead. The lesser-than-average visibility of the monitor, especially during the day, the average touchscreen responsiveness and the flat, difficult-to-use volume knob also detract from what was a great concept: a multimedia navigation unit priced for the masses. Early adopters of the AVIC F-series have encountered problems with the Bluetooth, iPod functionality, and the system loading time. On the F900BT, I experienced dropped calls as well. To address the different problems Pioneer released a firmware update. You can go to the companys website, www.pioneerelectronics.com and go to the navigation section. There are explicit directions for downloading the firmware and for loading it via SD card to your F900BT or other F-series unit (the F500BT is excluded). Youll find that it will improve the performance of a product, making it that much more worth the price. And ultimately, at this price point (and that is the point) there isnt another product with as much to offer and that is as easy to use while being so feature-rich. The question is: How much is too much for a product with great and various capabilities that are countered by some functionality issues? There are always value or quality trade-offs when you buy things. I would suggest you go for your own testdrive to determine if the new AVIC is worth it for you. I should note that the latest shipment of AVICs have the firmware included, which should make your decision to buy a little easier.
Key Features
1000W Power Amplifier
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.
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