Electronics: 2011

Minggu, 25 Desember 2011

Voltage Impulses

Forms of Voltage ImpulsesThere are three forms inpuls voltage that may be experienced in the electric power system, namely:1. Lightning impulse voltage2. Surge impulse voltage circuit3. Truncated impulse voltageWavefronts are part of a wave that starts...

switching power supply

C1, 2 : 100nF, 250VAC polypropylene (RS 190-8539)C3 : 680uF, 450V electrolyticC4, 5, 6, 7, 8, 9, 10, 11 : 470nF, 630V polypropyleneC12, 13 ...

Kamis, 22 Desember 2011

TOSHIBA Bipolar

• TOSHIBA Bipolar Digital Integrated Circuit Silicon Monolithic• General-Purpose Linear ICs• 7-ch Darlington Sink Driver• Darlington Drivers IC• The ULN2004APG/AFWG Series are high−voltage, high−current darlington drivers comprised of seven NPN darlington...

Kamis, 17 November 2011

power supply outage

When the main power supply outage (PLN), the electricity supply required reserves and the conditions of the Generator-Set is expected to supply power mainly to priority loads. Generator can be used as a backup electrical system or "off-grid" (which depends...

Minggu, 13 November 2011

power for energy

Model: LDR, WDRCapacity: 8-4000kg/hSteam pressure: 4-16barFuel: ElectricFuel: ElectricUser:For food processing, printing and dyeing, pharmaceutical provide for production of gasoline and medical institutions with the provision of disinfection gas, for...

Selasa, 08 November 2011

voltage regulator diode

Zener diode is applied in the reverse breakdown of the surface contact area of the special type of silicon diode. Zener diode volt-ampere characteristic curve and silicon diode volt-ampere characteristic curves exactly the same. Zener diode characteristic...

Senin, 07 November 2011

PIC microcontroller

PIC microcontroller provides a different combination of features, thus the most suitable can be selected for any given application. Some of the main selection criteria are:•number of I/O pins availbale•program memory size•program memory type (ROM, EPROM,...

Minggu, 06 November 2011

Gel permeation chromatography

Gel permeation chromatography (GPC) involves steric separation of a sample, i.e., separation on the basis of size. Different detectors are used to analyze the resulting size fractions in order to quantify molecular weight and distribution, molecular...

micromanipulators

Crystal manipulation and harvesting have been done manually since the science of crystallography began. While the looping of larger crystals comes easily for some people, others never seem to get the knack. Some of the problems with manually harvesting...

Rabu, 02 November 2011

bridge rectifier

There are basically two versions of the P3a: a 60W into 8 ohms (with ± 35V supply rails) and a 100W into 8 ohms (with ± 42V supply rails). I decided to build the version ± 35V, for two reasons. A 60W, which is more than enough. The other is that the...

Sabtu, 29 Oktober 2011

Mini-micro hydropower

QuintessenceThe flow of water that flows from the highlands towards the more lace has a potential energy that can be utilized as a source of new energy. With good planning strategy for the development of energy sources such as this in turn will be able...

Senin, 24 Oktober 2011

LM1830

LM1830 based liquid level indicator circuit. LM1830 is a monolithic integrated circuit that can be used in liquid level indicator / control systems. Manufactured by National Semiconductors, the LM1830 can detect the presence or absence of polar fluids...

Sweep-Frequency

Sweep-Frequency Generator The working of a sweep-frequency generator is explained in the article below. The working and block diagram of an electronically tuned sweep frequency generator and its different parameters are also explained. Related Article...

IC NE555

The circuit diagram of a very simple voltage doubler using NE555 timer is shown here. Here IC NE555 is wired as an astable mutivibrator operating at around 9KHz. The base of the two transistors (Q1 and Q2) is shorted and output of the astable multivibrator...

P-N junction

Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. It is acting as normal diode while forward biasing. It has a particular voltage known as break down voltage, at which the diode break downs while reverse biased....

Rectifier diodes

Rectifier diodes are the most commonly used diode type but other diodes come into play as well. These include Zener diodes, Schottky diodes, tunnel diodes, photodiodes, varicap diodes and light-emitting diodes. Each diode type has a different function....

Jumat, 07 Oktober 2011

EM DC Amplifier

EM DC Amplifier model A22 is a low noise amplifier module for sensitive DC measurements, data collection and systems, and is ideal for very sensitive temperature measurement using thermocouples.The noise level of the A22 is equivalent to a perfect resistor...

AQ4X90 Amplifier

Model AQ4X90Digital Four Channel Amp Input Sensitivity 0.2V ~ 8VSignal to Noise Ratio 100 <Damping Factor 250 <External Fuse Rating 2 x 30AmpTested Voltage and THD 14.4V & 1% THD4 ohm Power 90W x 42 ohm Power 120W x 44 ohm Mono Power 240W x...

XLS Series amplifiers

XLS Series amplifiers are professional Stereo power amplifiers engineered to meet demanding Audio requirements - reliably and within budget. Every XLR Series Amplifier is backed by Crown's unequaled three-year, no-fault, fully transferable warranty that...

PWM amplifier chips

PWM amplifier chips requires an analysis of performance specifications. Output current is the maximum continuous current that can be delivered in the output. Input offset voltage is the amount of DC voltage that amplifiers produce even when 0 V is applied...

log amp chips

Logarithmic amplifier chips (log amp chips) produce an output voltage that is directly proportional to the logarithm of the input voltage. Operational amplifier chips (op amp chips) are general-purpose, closed loop devices used to implement linear functions....

RF amplifiers

RF amplifiers requires an analysis of several performance specifications. Operating frequency is the frequency range for which RF amplifiers meet all guaranteed specifications. Design gain, the ratio of the output to the input power, is normally expressed...

4 ohm speaker

The "50watts" part is the one we notice first and everything else qualifies how that "50watts" was measured. Having enough power is what most people look for in an amp. However, other things come into play. If the you are going to run a load less than...

two terminals

Bi-Amping refers to using different amplifiers (or different channels of the same amp) for the low and high frequencies in the same speaker. On a 3-way speaker, usually the mid and tweeter are driven by one amp, and the woofer is driven by more powerful...

Selasa, 04 Oktober 2011

Laser diodes

Laser diodes are used in all areas of electronics from domestic equipment, through commercial applications to hash industrial environments. In all these applications laser diodes are able to provide a cost effective solution while being rugged and reliable...

Selasa, 20 September 2011

Dual section air variable capacitor

Dual section air variable capacitorwas invented to provide tracking between two related LC-tuned circuits, as in a radio receiver. Such capacitors are basically two (in the case of Fig. 5) or more variable capacitors mechanically ganged on the same rotor...