Electronics

Nokia N91 mini earphones should work with most devices. If they don't, they may be defective.

Reducing the resistance of solar cells increases the output current. Although the voltage remains the same the current is effected due to internal resistance. A reduction in output current can result in lesser diminished functioning in household appliances.

If there’s enough room on the capacitor, most manufacturers of electronics components print the capacitance directly on the capacitor along with other information such as the working voltage and perhaps the tolerance. However, small capacitors don’t have enough room for all that. Many capacitor manufacturers use a shorthand notation to indicate capacitance on small caps.

If you have a capacitor that has nothing other than a three-digit number printed on it, the third digit represents the number of zeros to add to the end of the first two digits. The resulting number is the capacitance in pF. For example, 101 represents 100 pF: the digits 10 followed by one additional zero.

If there are only two digits listed, the number is simply the capacitance in pF. Thus, the digits 22 indicate a 22 pF capacitor.

This shows how some common capacitor values are represented using this notation:

Marking Capacitance (pF) Capacitance (ìF)

101 100 pF 0.0001 ìF

221 220 pF 0.00022 ìF

471 470 pF 0.00047 ìF

102 1,000 pF 0.001 ìF

222 2,200 pF 0.0022 ìF

472 4,700 pF 0.0047 ìF

103 10,000 pF 0.01 ìF

223 22,000 pF 0.022 ìF

473 47,000 pF 0.047 ìF

104 100,000 pF 0.1 ìF

224 220,000 pF 0.22 ìF

474 470,000 pF 0.47 ìF

105 1,000,000 pF 1 ìF

225 2,200,000 pF 2.2 ìF

475 4,700,000 pF 4.7 ìF

You may also see a letter printed on the capacitor to indicate the tolerance. You can interpret the tolerance letter as follows:

Letter Tolerance

A ±0.05 pF

B ±0.1 pF

C ±0.25 pF

D ±0.5 pF

E ±0.5%

F ±1%

G ±2%

H ±3%

J ±5 %

K ±10%

L ±15%

M ±20%

N ±30%

P –0%, + 100%

S –20%, + 50%

W –0%, + 200%

X –20%, + 40%

Z –20%, + 80%

Notice that the tolerances for codes P through Z are a little odd. For codes P and W, the manufacturer promises that the capacitance will be no less than the stated value but may be as much as 100% or 200% over the stated value.

For codes S, X, and Z, the actual capacitance may be as much as 20% below the stated value or as much as 50%, 40%, or 80% over the stated value. For example, if the marking is 101P, the actual capacitance is no less than 100 pF but may be as much as 200 pF. If the marking is 101Z, the capacitance is between 80 pF and 180 pF.

This is the symbol for a microhenry, or one-millionth of a henry. The henry is the SI unit for inductance.

SMT stands for Surface Mount Technology. It's a way to make a circuit board by placing the parts directly on the circuit board. The board is pre-printed to show exactly where to mount the parts, kind of like a child's puzzle where underneath each piece is a picture of the piece that should go over top of it. SMT has mostly replaced Through-hole Technology, which was where the parts attached to the circuit board using wire leads that would fit through holes in the circuit board.

For assistance with setting up a remove CCTV system, Zmodo, AVS Forums and community Virginmedia offer many helpful instructions and tips for the beginner.

'425 VA' is short-notation for '425 Volt-Amps'. This value gives the number of Amps against the number of Volts, but referring to this as just 'Amps' is perfectly acceptable.

One of the early digital devices was the Eccles-Jordan Flip-Flop invented about 1918. Much of the operation of digital signals itself relies on the mathematical work of Claude Shannon, and further back, upon the work in the 1850s of George Boole - inventor of Boolean Algebra.

A HDMI cable is used to connect a behringer mx400 mixer to a behringer head amp. This can be bought at just about an big store.

Think it through. You are adding a second path for current flow.

Current flow will increase to some extent.

Therefore, with more current flow, resistance must....

That varies from computer to computer. I have a small one that takes less than 1 Ampere, some very big ones take 100s to 1000s of Amperes.

Their return policy is as follows: Cameras, phones, computers, laptops and various IT accessories (Mice, keyboards etc) are under a 14 day full warranty, whereas televisions and other home media is under 30 days.

Extron Electronics manufactures all sorts of electronics from Audio, HDTV, control and monitoring, many forms of cables, scaling and signal processors, computer video interfacing, and much more.

The electronic lock will unfortunately lose all functionality and cannot be opened until the power is turned back on. Anything real important or things that may be needed at a moments notice should be unlocked with real locks instead.

All the chemical elements were made in the nuclear fireball that eventually became the earth, about 5-6 billion years ago. At that time the earth was in fact a small star

On a standard four band resistor: yellow, violet, black, and gold.

Technically, a transducer is defined as a device, which converts other sources of energy such as heat, mechanical, pressure etc. into electrical energy, i.e., the output of a transducer is always electrical energy. Since, a speaker converts electrical energy into sound energy, it is not a transducer.

UK mains ac current is produced from a rotating 3 phase generator, rotating at 50 cycles per second (50 Hz)

S-2

normal amplifier is a mathametical operation analog the computer,

magnetic amplifier is sound operation of the signal

Anti-virus softwares are softwares that track your activity and stop threats on the internet from entering your computer. It works by tracking your cookies, and runs in your task manager to protect you from harmful viruses while you are surfing the internet.

Data entry, as with any computer keyboard. And the name is chording keyboard, as in musical chords. To enter a symbol you press several piano key shaped keys at the same time, allowing a very compact keyboard footprint and very rapid typing.

One form of hybrid radio, appearing in the late 1950s, used valves (vacuum tubes) and transistors together.

Early transistors worked fine at audio frequencies, and were much more efficient, using much less battery power. They could not perform at radio frequencies, however.

Vacuum tubes had been used at radio frequencies for many years, but the push to miniaturise them led to lower performance. Even the subminiature types (about the diameter of a cigarette) still used a lot of battery power to operate.

The hybrid radio used valves in the radio frequency end (usually three) and transistors in the audio end (usually two).

This design made best use of the advantages of valves and transistors.

Transistor development was rapid, and all-transistor radios appeared soon after hybrid sets were marketed. They were only available as battery portables.

Hybrid sets are among the rarest of mass-produced radios.

It is renewable, therefore, you do not dispose anything because there is also no waste.