Electronics Engineering

[ (234) divided by (station frequency in MHz) ] feet, hanging vertically.

The current in each resistor in a series circuit is the same. Kirchoff's Current Law states that the sum of the currents entering a node must add up to zero. The connection between two resistors in a series circuit is a node. The current entering the node from one resistor is equal to the current leaving the node into the next resistor.

* resistance increases voltage. Adding more resistance to a circuit will alter the circuit pathway(s) and that change will force a change in voltage, current or both. Adding resistance will affect circuit voltage and current differently depending on whether that resistance is added in series or parallel. (In the question asked, it was not specified.) For a series circuit with one or more resistors, adding resistance in series will reduce total current and will reduce the voltage drop across each existing resistor. (Less current through a resistor means less voltage drop across it.) Total voltage in the circuit will remain the same. (The rule being that the total applied voltage is said to be dropped or felt across the circuit as a whole.) And the sum of the voltage drops in a series circuit is equal to the applied voltage, of course. If resistance is added in parallel to a circuit with one existing circuit resistor, total current in the circuit will increase, and the voltage across the added resistor will be the same as it for the one existing resistor and will be equal to the applied voltage. (The rule being that if only one resistor is in a circuit, hooking another resistor in parallel will have no effect on the voltage drop across or current flow through that single original resistor.) Hooking another resistor across one resistor in a series circuit that has two or more existing resistors will result in an increase in total current in the circuit, an increase in the voltage drop across the other resistors in the circuit, and a decrease in the voltage drop across the resistor across which the newly added resistor has been connected. The newly added resistor will, of course, have the same voltage drop as the resistor across which it is connected.

a step down transformer is used to lower the voltage from the powerlines into your home. a common slang term for this type of transformer is a pole pig.

yes it is. Of course waht do you think. yeh it is i think

you could use a step down transformer if you had no other option. but the best thing to do is run a 220 feed directly from the fuse panel Step down transformers get very hot and do not last forever

Yes you can - in principle, and in many cases. As long as the form factor of the new capacitor is the same as the form factor of the former capacitor, and as long as the maximum voltage of the new capacitor is higher than the max voltage of the former capacitor, you can often replace a lower-rated with a higher rated capacitor.

However...

Apart from the nominal capacity and maximum voltage rating, you should also consider the capacitor's design. There are many ways to make a capacitor, from tiny ceramics over various plastics and metal foil combinations to electrolytic capacitors. Apart from the capacity and voltage rating, the different types of capacitors also vary in a lot of other aspects: impedance, precision, drift with time and drift with temperature, are just some.

Electronics designers typically choose the capacitors carefully, and considering all those aspects. Only when those aspects don't matter much, designers tend to chose the cheapest technology. In such a case, you're safe to replace.

In most cases of capacitors rated at 1 micro Farad and above, electrolytic capacitors are used (typically small cylinders). Those are typically selected because they offer excellent value (capacitance) for money, and you're typically safe to replace them, subject to above rules.

CAUTION: some capacitors have a distinct polarity. You must make sure to observe the polatiry when replacing polarized capazitors. Failure to do so can result in serious harm (basically, the part might explode).

• only one dc supply is necessary.
• Operating point is almost independent of β variation.
• Operating point stabilized against shift in temperature.

When a clock signal is applied to a flip flop the output will change state from a binary 1 to a binary zero or visa vera on each clock pulse.

A latch when triggered by a clock signal will maintain its state until it receives a reset to unlatch it.

A:a latches not a flip flop but a switch set or reset waiting for a signal to close as a switch.

The electron was discovered by using cathode ray tubes. When it was discovered that the cathode ray diverted away from the negative end of a magnet to the positive end, it revealed that there was a negative particle present in the ray.

how to measure the length of elements and spacing of elements

In its simplest form, the starter of a dc motor is a variable resistance in series with the armature circuit of dc motor to reduce the high starting current so that the armature winding does not get overheated and burnt while the motor isgetting started. As the rotating armature of dc motor picks up speed, the starter resistance is gradually reduced so that the motor is able to attain its full speed when the starter is not expected to offer any additional resistance in series with the armature winding of the dc motor. At full speed the motor starts running normally, of course, without the help of starter. In other words, the starter offers resistance to armature current during starting of dc motor only. Under normal working condition of dc motor , the starter is electrically out of armature circuit of the motor. The starter protects the armature of dc motor from getting damaged. The electromotive force (emf) induced in the armature winding during starting builds up from zero value to max value to restrict the armature current within the permissible value at full speed. As the speed of armature/motor build up, armature induced emf also starts building thus reducing the role resistance offered by the starter, hence requiring it to gradually reduce as the motor picks up full speed.

This is a difficult question to answer because of all of the variables in so many different homes. The size of the home is one of the variables. The type of heating is another variable, whether it is electric or gas. How the hot water is heated in the home electric or gas. For example, I have a 3200 sq foot home and I use 1600 kWh every two months.

yes

A battery is condutor because it free to move

I suppose so. If a three input NAND is used as a two input device, the third input can be viewed as an inhibit input.

Also some NAND devices can be "3 stated" where the output goes to a high impedance.

The device that increases or decreases the voltage impressed across a power line is known as a voltage regulator.

A voltage regulator is a type of transformer where the primary and secondary turns ratio are fairly close; one (primary or secondary) often has a tap changing ability to add or remove several windings, allowing more dynamic control of voltage.

Semiconductors may be used to fabricate electronic devices. This is done quite often.

Most of the electronic devices they're used for are called "transistors". Often, several

transistors are combined in a single small device, called an "integrated circuit".

A few examples of where these devices may be found in real life include . . . -- almost every radio in the world

-- almost every TV set in the world

-- almost every landline telephone in the world

-- every TV remote

-- every GPS

-- every CD/DVD player

-- every cellphone and every smartphone in the world.

Fundamental frequency = 1st harmonic = 256 Hz

2nd harmonic = 1st overtone = 512 Hz

3rd harmonic = 2nd overtone = 768 Hz.

Look at the link: "Calculations of Harmonics from Fundamental

Frequency".

It means an 8 bit parallel I/O interface, as opposed to 8251 which is a serial I/O.

The battery has 6 volts across its terminals. The way to discover it is to apply Ohm's law. It (Ohm's law) comes in 3 "flavors" that look a bit different but all say exactly the same thing. Here they are: E = I x R [Voltage equals current times resistance.] I = E/R [Current equals voltage divided by resistance.] R = E/I [Resistance equals voltage divided by current.] In these equations, voltage is E, current is I and resistance is R. They are measured in units of volts, amperes (or amps) and ohms, respectively. In your problem, we have the resistance (R) and the current (I). We need to find the voltage (E), and the formula E = I x R is the logical choice to discover the voltage. As E = I x R here, E = 0.75 x 8 = 3/4 x 8 = 6 volts. Piece of cake.