The Mydeltapi Webstore - electronic devices to use at work, in home and at hobby activities
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Electronic devices, kits and components for hobby, home and professional use Welcome to this presentation of hobby electronic construction kits or components for hobby electronics for a better prize than in the local stores, or find electronic components and building kits you do not find locally. Pleace click on a link to learn more or to buy. The presented products are only some of the products you can find by clicking at a link.
building kits for hobby, eductation and experimentation
Transmitters and transmitter kits
ELECTRONICS AND DIGITAL CIRCUIT KITS TO BUILD DEVICES AND DO EXPERIMENTS
These kits have special robust components that are easily snapped into the board. They are therefore specially suited for younget kids, but you can make elecronic designs with real functions with them.
PROFESSIONAL LIGHTING DEVICES LIKE WORK LIGHT ANS STAGE LIGHT
If the exhibited models are not exactly what you search for, you will find many more models by clicking at the but buttons.
AND ELECTROMECHANICS SCIENCE KITS
With these electronic kits have ordinary professional components. They are fasted to the board and held in place by small holders with a spring or some other elastic holder mechanism. Therefore they do not require any soldering.
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Electronic workshop tools
Instruments and kits to measure voltage, current and other electrical or electronic parameters
Electronic diagnostic tool for components in cars and vehicles and similar components
Multimeters for affordable prices
Do you like to explore what you can find underground or in the soil. With a metal detector you can find a lot of valuable or interesting items you would not be aware of elswhere. Here are exhibited some good metal detectors handy to take with you into the fields
Detectors to explore radiofrequency electromagnetic radiation, radioactive radiation and combustible gass leak
Detector for radiofrequency radiation and pulses
- Radiofrequency radiation or pulses can be a threat both to the health and technical devices. Also it is always interesting to investigate out what sources of radio wave radiation there are in the surroundings,
Detectors for radioactive radiation activities
- It can also be interesting to explore the radioactive radiation levels in your home or your surroundings. The level of radioactivity and radioactive radiation is important for your health and well-being. In addition these levels can tell you a lot about natural processes and industrial activities at a place.
Detector for combustible gasses
- Sometimes it is important to detect gasses in the surrounding air in your home or workplace.
STORES OF ELECTRONIC PRODUCTS OF ALL KIND
Here are presented some good online shops where you can find electronics of all kind for good prizes: Game equipment, Computers, Televisions, DVD Players / Recorders, Home Audio / Video, MP3 Players / iPod Accessories, Satellite Radio, Headphones, Mobile Audio / Video, GPS / Navigation, Home Electronics, Telephones & Fax, Personal Electronics, Electronic Accessories.
Electronic kits, components and tools - HobbyTron - By clicking at this link, you will find all
types of electronic components for hobby use and for professional use in
laboratories. You will find electronic sets that can be used to build a lot of
sevices and circuits. There are kits for building or installing specific
electronic devices like power supplies, wave and pulse generators, measure
devices, detectors, alarms, light effect generators, radio resceivers and
transmitters and a lot more. You will also find specific components of
every kind singly or in bulk.
Electronics Kits, components and tools - please click here
You will also find NTE electronic parts, capasitators, dials, knobs, diodes, relays, resistors, potetiomenters, semiconductors of every kind, transistors, diodes, thyristors, speaker wires, trimmers, hook up wire, wire ties, Heat Shrinkable Tubing - Thin Wall Polyoefin -2:1 Per Package-48in, Heat Shrinkable Tubing - Thin Wall Polyoefin -2:1 Per Package-6in, Heat Shrinkable Tubing - Dual Wall Polyoefin w/Adhesive-3:1 Per Package-6in.
Good stores for all kind of electronics - Electronic devices, parts and accessories for entertainment, video gaming, work, surveiilance and security, computing, imaging, video, audio, medical applications, educarions, remote controle appliations, workshops amd much more. But these store are also more general so that you can find all kind of technical devices here, and also products within the categories, car parts, apparel, body care, fitness and medicine.
The source - a great shop for Canadian citicensof cellphones, laptops, audio-video and other electronics - In this online warehouse people in Canada can find cell phones and all other electronic deices for a good prize. The store has departments for: Computers, TV and home entertainment, Audio and MP3, Gaming, Music and electronic toys, Cameras and Camcorders, GPS and travel comodities, Cell phones. Home and office accessories, Batteries, Power and parts.
Ink cartridges av all types - 123InkJets
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The priciples behind semiconductor electronic
A semiconductor is a crystallic compound where the atoms are bound together in a three-dimensional framework, and where the electrons used for bonding are fairly loose, but not so loose that the material normally is conductive. In the semiconductor cystal used in electronic devices, there are certain added elements that nornally require less or more chemical bonds than the atoms in the crystal framework. This makes the crystal conducting nearly like a metal.
In a N-type, the added componenets have more electrons for bonding that the atoms in the crystal lattice. This creates loose electrons that can be used for conduction. If two electrodes are placed on the material, these loose elctrons easily jumps over to the positive electrode, making the crystal positively charged. Then new electrons are attracted from the negative electrode into the crystal.
In a P-type semiconductor the added components have fewer electrons for bonds that the atoms of the crystal lattice. Then the lattice will get holes where extra electrons can fit in. If two electrodes are placed on this material, electrons will easily be pushed from the negative elecrode into the crystal lattice. This makes the lattice negatively charged. Electrons will then be pulled out again at the positive electrode.
If you make a crystal with a N-part and a P-part or set two such crystals firmly against each other, and apply electrodes at both sides, the effects will be different according to which electrode is positive and which negative.
If the negative electrode is at the P-part, and the positive at the N-part, this will happen: The negative electrode will push electrones into the P-part, since the P-part has ready locations where the electrons can fit in. The positive electrode will drain electrones form the N-part, since there are loose electrons in the N-part. This makes the P-part negative and the N-part positive. Then there will also be a stream of electrons across the junction between the P-part and tha N-part, since the N-part now is positively charged, and the P-part now has a negative charge. A curent will thus occure in the whole surcuit.
If the negative electrode is at the N-part, and the positive at the P-part, this will happen: The negative electrode will not manage to push electrones into the n-part, since the N-part allready is full of loose electrons. The positive electrode will not manage to drain electrones form the P-part, since there are not any loose electrons here. There will be no stream of electrons across the junction between the n-part and tha P-part, since neither the N-part, nor the P-part has any charge that can give a frose to push electrons over the PN-junction. No corrent will thus occure.
The ability of a PN-combination of letting current through in one directiuon and letting current pass in the other direction is the basis for all electronic components. A component simply consisting of of a combination of a P-type semiconductor materila and a N-type semiconductor material, is called a diode. A diode is simply a semiconductor rectifier.
A transistor is a semiconductor device consisting of three layers that can be connected to two circuits and arranged in such a way that the current or voltage in one of the circuits will control the current in the other circuit.
A bipolar junction transistor (BJT) is a type of transistor consisting of a P-layer with a N-layer on both sides, or a N-layer with a P-layer on poths sides, called respectively PMP-transistors or NPN-transistors. If you connect a circuit acrosse all three layers layers, and another curcuit across one other outer layer and the mid layer, you can regulate the ability of the transistor to conduct current in the circuit across the three layers by variating the direction and intensity of the voltage and thus current applied in the last circuit across two layers.
Without any voltage and current applied through the mid layer and one of the outer layers, the device will not lead current, since the current must pass either a np-junction or a pn-junction, and one of these will not lead the current.
In a pnp-transistor, a positive voltage appied at the mid layer in the circuit across the mid and one outer layer, will drain electrons out of this layer, and make it a leader. Then the transistor vil act like a diode for the circuit applied across all the three layers.
In a npn-transistor, a negative voltage applied at the mid layer will introduce electrons into the lattice, and make it a leader, and the transistor vill behave like a diode for the circuit applied across all the three layers.
By using four or more layers, it is possible to make semiconductor devices with more complicated functions, like for example a thyristor consisting of four leyers of different types.
There are many materials that transistor crystals are made from, for example Semiconductor material: germanium, silicon, gallium arsenide, silicon carbide.
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