Schematic Rise

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Wednesday, November 19, 2014

Type of Capacitor

Electrolytic

- Made of electrolyte, Aluminum electrodes are used by using a thin oxidation membrane

- Polarized capacitor

- Cheap, readily available, good for storage of charge (energy) availablein very small or very large values in μF- Not very accurate, marginal electrical properties, leakage, drifting, not suitable for use in hf circuits

Tantalum

- Made of Tantalum Pentoxide. They are electrolytic capacitors butused with a material called tantalum for the electrodes. Superior to electrolytic capacitors

- Nonpolarized capacitor

- Excellent temperature and frequency characteristics,lack of current-spike-noise. Small size fits anywhere, reliable, most common values readily available.

- Expensive, easily damaged by spikes

Polyester Film

- This capacitor uses a thin polyester film as a dielectric.

- Nonpolarized capacitor

- Not as high a tolerance as polypropylene, cheap, temperature stable,readily available, widely used. Tolerance is approx 5% to 10%.

- Can be quite large depending on capacity or rated voltage and so may not be suitable for all applications.

Polypropylene

- This capacitor uses polypropylene film is the dielectric.

- Nonpolarized capacitor

- Very little change in capacitance when these capacitors are used in applications within frequency range 100KHz. Tolerance is about 1%

- higher tolerance is needed then polyester caps can offer . Very small values are available.

Metalized Polyester Film

- Dielectric made of Polyester or DuPont trade name "Mylar".

- Nonpolarized capacitor

- Good quality, low drift, temperature stable. Because the electrodesare thin they can be made very very small. Good all-round capacitor.

Epoxy

- Manufactured using an epoxy dipped polymers as a protective coating.

- Nonpolarized capacitor

- Widely available, stable, cheap.

- large depending on capacity or rated voltage and so may not be suitable for all applications.

Ceramic

- Constructed with materials such as titanium acid barium for dielectric. Internally these capacitors are not constructed as a coil

- Nonpolarized capacitor

- Well suited for use in high frequency applications. Typically used to by

-pass high frequency signals to ground. They are shaped like a disk, available in very smallcapacitance values and very small sizes. ,very small size and value, very cheap, reliable

- Together with the electrolytics the most widely available and used capacitor around. Subject to drifting depending on ambient temperature.

Multilayer Ceramic

- Dielectric is made up of many layers.

- Nonpolarized capacitor

- Small in size, very good temperature stability, excellent frequency stable characteristics. Multilayer caps suffer from high-Q internal (parallel) resonances

- generally in the VHF range. The CK05 style 0.1μF/50V caps for example resonate around 30MHz. The effectof this resonance is effectively no apparent capacitance near the resonant frequency.As with all ceramic capacitors, be careful bending the legs or spreading them apart to closeto the disc body or they may get damaged.

Monday, November 3, 2014

CHALLENGES DESIGN OF SWITCHING LED ELECTRONIC DIAGRAM

The LED WEBENCH® online design environment predicts and simulates the response of an LED to constant current while taking into account several potential design parameters that are new to designers of traditional switching regulators.

Sunday, September 7, 2014

Wiring Diagram of 1957 Oldsmobile All Models

What we will show here is the wiring diagram of the 1957 Oldsmobile all models. You can see clearly every parts names and connections in this wiring diagram, so it should be easy for you to study them, and we hope it also helps your understanding on the wiring diagram.

Wiring Diagram of 1957 Oldsmobile All Models

The parts inside are like: low beam, high beam, direction signal, horn, breaker, condenser, starter solenoid, starter, temperature gauge engine unit, distributor, coil, generator, voltage regulator, cutout relay, current regulator, etc. Be sure to have learn about this wiring diagram before you do any wiring work on your car, work safe and enjoy.

Friday, September 5, 2014

Schematic diagram of a USB player

Usb series player is an electronic device or electronic circuit that functions as an MP3 player that is stored on a storage device such as USB flash.

In this usb circuit using an IC as a modifier of digital voice data into analog so that it can be applied to a headphone, or again through the power amlplifier strengthened so that it can be heard through the speakers. IC used in this circuit using IC PCM2902 as a modifier of a digital data into analog data storage.

Below is a schematic diagram of a USB player.

Schematic usb player

Tuesday, September 2, 2014

Digital Thermometer with data processing of a microcontroller AT89C4051

Digital Thermometer 0-100.0°C is a digital thermometer that operates in modetemperature measurement in Celsius (° C). Digital Thermometer 0-100.0 ° C in this article uses data processor in the form of a microcontroller AT89C4051.

Temperature sensors used in Digital Thermometer 0-100.0 ° C. This temperature sensor LM35D. Digital Thermometer 0-100.0 ° C. It uses the temperature measurement data viewer in the form of 1 line LCD viewer. Digital Thermometer 0-100.0 ° C. It can display the temperature measurement data with a resolution of 0.1 ° C.

Digital Thermometer Circuit Diagram

Digital Thermometer 0-100.0 ° C. These temperature sensors make use of LM35D as temperature sensing. In Digital Thermometer 0-100.0 ° C. This temperature sensor measurement data this LM35D (Level Voltage) is then converted into 4-bit binary data using the ADC CA3162.

Then the 4-bit data from ADC CA3162 which is a measurement of data if the temperature is in the AT89C4951 microcontroller so that it becomes an operating principle of temperature measurement based on digital thermometers. In the final stage of the Digital Thermometer 0-100.0 ° C. This is the appearance of digital data temperature measurement, using digital data viewer of the LCD 1 line.

Sunday, August 24, 2014

Process formation of RGB signal on TV

Basically the UOC is equipped with RGB or YUV input from external, so it is possible to use the DVD input. Selection of these inputs can be done internally within the IC. But in the G7 and G7A chassis input YUV signal is not used, so in the ground.

Tuesday, August 19, 2014

Basic Combinations Of Subs And Amps

When we first get a sub for our car a person has multiple choices to choose from. Starting with the basic queries which are how many subs you want and what will be their sizes that go perfectly with your amplifiers. It is necessary to pick subs and amps that are completely compatible with each other otherwise clash between one of them will either decrease the life of them or will not let them work at all. If you already have purchased either one of the subs or amps then Internet is the best way to find its compatible amp or sub respectively. Otherwise, websites like mtx.com have a complete chart that will suggest which amp is compatible and best for a particular sub.

Compatibility of amps and subs are very important otherwise the clash will either take both of the devices down or will unable to play either one of them. The subs and amps can be picked out at the same time to avoid any incompatibility between them but if you already have one of them at home then browse a little on Internet to find out which one of the other best suits it.

In subs, you have two main choices which are either single voice coil and dual voice coil that gives you option for more wiring. Therefore this result in excellent performance and incredible power handling, exceptions excluded.

In the purchasing of an amplifier the most and the only thing important is to choose how much amount of power you need for your subwoofers. Once you have decided that you can get one that fits the compatibility factor as well as your requirement. A mono amplifier or a two-channel amplifier is the choices in this category though. The four common types of combinations for subwoofers are discussed further.

The bright side of each of these combinations will be kept in mind while choosing the right type of amp for it.

Single 4-ohm Voice coil sub:
As the single voice coil sub has less wiring therefore they are compact, simple and cheaper. They do not take too much room with a great result. This voice coil sub is perfectly compatible with a two-channel amp as they work fine with 4-ohms. Make sure you do not use a mono amp here as they are best well-suited with less than 4-ohms.

One 4-ohm dual voice coil sub:
Dual voice coils as mentioned earlier can be wired in multiple ways making it easier for you which also results in great performance and power handling. Most of the dual voice coil subs are compact too. Mono amps which are built for lower impedance usage and most power production are ideal for this type of voice coil sub.

Two 4-ohm single voice coil subs:
For producing accurate and tight bass you can get two subwoofers to thump harder. This may take up more room but it depends on your priorities – more bass or trunk space? Mono amps are perfect for this category as more power and performance is expected from them.

Two 4-ohm dual voice coil subs:
Again dual voice coil subs provide multiple wiring that brings us to flexibility and convenience. Two-channel amp is again the right choice for here resulting in powerful bass.

Now the above mentioned combinations were the basics and common one. You can look for more combinations if you want to experiment and bring the most out of your amps and subs. Only remember a little browsing before buying never goes to waste