Electronics Engineering

Whenever you use an ohmmeter, you must first ensure that the device you want to test is disconnected from the supply. So the fact that your heater is rated at 240 V is irrelevant to this question. The heater must be disconnected from the supply BEFORE you contemplate measuring its resistance. Which 'ohms setting' to use is then simply determined by whichever setting gives you the best reading. For an analogue ohmmeter, this is whichever setting results in the pointer being towards the lower-resistance end of the scale.

Georg Ohm, see link to his biography

White noise sounds like a hiss. It can be used in the sythesis of musical instruments or sound effects. It is random noise and can be used for signal analysis.

In the US most residential an a fair amount of commercial lighting is done with 110 volt 15 or 20 amp Alternating Current (AC) curcits.

A large amount of office lighting is done with 277 volt 15 amp ac curcits. Some is done with 240 volt ac and some with 480 volt ac, but these ar usually in industrial or large area applications.

There is also 208 and other source power applications but these are rarer still.

LED, Florecent and other types of lighting is supplied through transformers with various voltages from 2 or 3 volts up to 10 or 15000 volts at very low amprages.

The general rule is to accomplish the lighting requirements with the most efective and efficent possible amps and curcits based on the available power supply scource.

Terry

Combination building inspector

Just because you get a good voltage reading at the PCM, and are still getting that OBD II code, doesn't necessarily mean that the TPS is still bad. The Signal wire running from the TPS to the PCM is a straight shot, but the ground wire and the reference wire have a few splices in between the TPS and the PCM. Make sure to check the voltage at all those different spots. If you get a good reading on the voltage at all the different points on those wires, then it could be that you just bought a bad TPS. One way to check, it to take the TPS off, but leave it connected to the wiring harness. With the voltmeter leads on the ground wire and the signal wire, and the key in the ignition and turned to the on position (engine still off), manually manipulate the rotating slot and you should see a nice gradual increase in voltage. If not then that's a bad TPS. Hope this helps.

The output current of a PIN diode is proportional to the light incident . Whereas in APD due to internal multiplication (Avalanche multiplication) of primary photocurrent, higher gains are possible.

A small signal current output from the pin diode are to be amplified before applying to next associated receiver circuit. This includes thermal noise in the main signal, giving lower, receiver sensitivity. In case of APD, photocurrent is multiplied before encountering the thermal noise amplifier, giving increased receiver sensitivity.

according to Texas Instruments it is a good practice to use multiple schottky diodes in parallel.

When relay is turned the magnetic field that surrounds the coil collapses. When the current goes down rapidly the voltage goes up rapidly. A diode is placed across the coil, to dissipate this spike in voltage, in order to prevent damage to semiconductor components.

It is a non-weighted code, that is, each position of its bit isn't assigned a particular value.

High voltage gloves, also known a gauntlets, are gloves worn by utility line men. There are two parts to the gloves. The inner pair are made of a high dielectric rubber numbered from 00 to #4 which covers voltage ranges from 500 to 36000 volts. The outer pair are made of leather. They are used to stop perforation and scratch cuts of the inner gloves from wires end perforation. Before the gloves are used they have to be tested by the person that is using them. Every year they have to be sent to a testing laboratory to be tested with high voltage to make sure that they still maintain their voltage insulation number rating. If the gloves fail this test the gloves are destroyed and new ones have to be purchased. These gloves are for line men safety and are worn even when the high voltage system is de energized.

... in CE config.. as Vo=Vcc-Ic Rc nw as Vcc is const. v cn say Vo is directly proportional 2 (const.-Ic Rc) so nw when d base voltage is increased Ib will inc. thus, Ic will inc. cuz Ic=beta Ib thus Ic Rc drop increases... as Vo is prop 2 (const.-Ic Rc) thus, Vo will decrease for inc. in Ic...thus d curve for d +ve half cycle in which Ib is increasing drawn in 180 deg phase showing Vo is dec. n vice versa 4 -ve half cycle...

nw in CC... as d o/p is taken frm emitter... Vo= Ie Re so der's no -ve sign..n for d +ve cycle Ie will incr(dat's leakage current) as der's no-ve sign it'll b in phase wid i/p..hence no phase shift as leakage current doesnt incr. so much thus,d o/p voltage Ie Re doesnt inc much thus, d o/p doesnt amplify much thus dis config knwn as emiter follower...

nw in CB,... d I/P is appiled at emitter n o/p is taken frm collector... so, 4 d +ve half cycle d EB junc will b less FB thus causing dec in Ib n thus, in Ic... so dec in Ic causes inc. in o/p voltage(cuz Vo=const.-Ic Rc)..n during -ve half cycle d junc will b more FB(inc in Ic) so o/p voltage will b decreasing..hence der's no phase shift...

for more info...

cont.

shrey.dhingra51@gmail.com

If you put two batteries of the same voltage with like terminals touching each other in series the equal, but opposite voltages will cancel each other and the light bulb will not light, because there is no current flowing through it.

IC 7485 (a comparator) can be used as a subtractor, this is because...... as a 4-bit subtractor calculates the difference between the inputs and then provides value for a borrow and a difference.....in the same way a 4-bit comparator (in this case IC 7485) takes the inputs compares it and gives a corresponding value either A>B or A=B or A

An opamp buffer circuit is one where the input signal is connected to the plus input, and the output is connected to the minus input. Within the performance limitations of the opamp, the output will track the input. The advantage of the buffer circuit is that is presents very little load impedance to the input signal, while providing a low impedance from the output to drive whatever circuitry is connected there.

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LEDs are still more expensive compared to CFLs or incandescent light bulbs.

However, you can still save a lot of of money from electricity bills since LEDs efficiency is far superior to other kinds of light bulb.

Fortunately, there are good news in terms of price.

Do you remember how expensive it was before HDMI cables became popular to the public?

It was because there was bubble on HDMI price, but as many online retailers started to sell HDMI cables, the bubble was finally broken. As a results, we have enjoyed HD TV at our own home.

LEDs has shown similar trends as HDMI cables.

Many online retailers started to have interests in LEDs and they have tried to reduce fat on the price.

Check out lightkiwi.com. It is not known to many people but I found that you can buy products with cheap price and get warranty for some products.

Laser posterior capsulotomy, or YAG laser capsulotomy, is a noninvasive procedure performed on the eye to remove the opacification (cloudiness)

0v The relay is designed to act as a switch when voltage is applied across the coil. The contacts open or close but only pass through whatever is connected to those terminals.

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When a relay coil is energized the relay's contact change status. The closed set of contacts will open. The 120 volt circuit that is connected will turn off. As to the voltage at the contact terminals, it depends on where you are taking the voltage reading from and to. On the source side of the terminal there will be a reading of 120 volts to neutral or ground. On the other side of the contact terminal there will be zero volts to the neutral or ground. This is because that wire is in series with the load to neutral. A meter reading across the relay terminals will read 120 volts.

A potentiometer measures the potential voltage in a circuit. There are several types of potentiometers including constant current, constant resistance, microvolt, and thermocouple.

Ethan is Cool.

DLP is digital light processing and LCD is liquid crystal display.

yes i want

If the interior of the oven is stil without rust marks and it is stil in good condition one can replace the magnetron

I imagine 2200 is the value and usual is in microfarad a one farad will be a huge capacitor to be used in electronics.

The volume of a sound is measured by the sound pressure in pascals or newtons per square meter. The sound pressure level is measured by a sound pressure level meter (SPL meter).