To determine how many flip-flops will be complemented in a 10-bit binary counter to go from the binary number 1001101111 (which is 635 in decimal) to the next count (1001110000, or 636 in decimal), we look at the binary representation. The least significant bit (LSB) changes from 1 to 0, and the next bit (the second LSB) changes from 1 to 0, leading to a carry that causes the third LSB to change from 1 to 0 as well. Thus, 3 flip-flops are complemented in total.
Difference between analog and digital control systems?
An analog control system is one that presents data by measuring a continuous variable. This reports the data back in voltage or pressure.
What is a purely resistive circuit?
It does not contain unidirectional output
AnswerA purely resistive circuit is an 'ideal' circuit that contains resistance, but not inductance or capacitance.
What happens to the applied voltage when a change in circuit resistance occurs?
When a dc supply is connected to a resistor, current flows.
The current in amps is equal to the supply voltage divided by the resistance in ohms.
The power used is the voltage times the current, and that appears as heat in the resistor, which might become hot to touch.
Why capacitor used only in AC power system?
A capacitor is included in the circuit to act as a filter to reduce ripple voltage. ... filter circuitmay be built using two capacitors and an inductor: ...
look at http://en.wikipedia.org/wiki/Reservoir_capacitor
What are field effect transistors?
EMITTER, COLLECTOR, AND BASE
The difference between a Field Effect Transistor and a regular transistor is that the regular transistor has PNP and NPN junctions and a FET has just a Drain Source Gate
junction and is sensitive to static electricity just as not as bad as a MOSFET. Soldering
a FET requires technical skill than it does a regular transistor. Transistors are used in switching and audio applications while FET's are used in RF VHF and HF applications and switching on high current devices such as LED's and piezo buzzers.
So a one transistor radio using a PNP transistor does not mean you will pick up more stations you will just receive a weak audio voltage through the high impedance earphone from the simple diode circuit using a 9 volt battery. While FET's and MOSFET's will amplify the signal.
MOSFET's are for really high current devices that's why have heat sinks on top of them.
How can you do the polarity test of a switch?
A 'polarity test', as it applies to a switch, is performed to confirm that the switch is located in the line conductor and not in the neutral conductor.
The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages.
For more details, hqew.net is a good place.
How do you use a multimeter to measure a short?
1.) Turn all the power in the circuit off. 2.) In volts mode (both AC and DC) check to make sure there is no power. 3.) In ohms mode check to see if the resistance is close to zero. (Check zero by connecting the leads together momentarily.) Note that light bulbs will have far less resistance cold than when hot, due to their negative temperature coefficient, so you should remove them, and that transformers and motors will appear to have zero ohms due to their inductive reactance, so they will also need to be pulled from the circuit.
Voltage across a resistance = (resistance) x (current through the resistance) =
4 x 1.4 = 5.6
If the ' 1.4 ' is Amperes of current, then the required voltage is 5.6 volts.
How to identify IC legs numbers?
We might identify an integrated circuit (IC) by recognizing it in a circuit. A voltage regulator in a piece of electronic equipment might be an example of an IC that a technician might recognize. There is also the idea that the number on the package can be used to cross reference the device and identify it. There are a number of cross reference guides on the web that will assist in locating a data sheet on a particular package.
What is maximum current given to 8 ohm speaker?
A: is not current or voltage but rather the product that is of concern
Why is gain affected when the bypass capacitor is open?
Applied input signal at the base of the amplifier appears across the emitter resistor (RE) due to inter electrode capacitance so it should be bypassed the emitter resistor (RE) through the bypass capacitor (CB). unbypassed signal will be amplified (common emitter amplifier) and reverse back from the emitter to the collector through the base, amplified signal from the emitter to the collector (common emitter amplifier) is 1800 out of phase to the amplified signal from the base to the collector (common base amplifier), so reduced the gain.
Where ac voltage controllers are used?
AC voltage controllers are used for controlling the speed of universal motor or induction motor by changing the firing angle :) -vinodh gav
What is the basic function of schmitt trigger?
mne tau aku.....aku tanye mg...mg tye aku....rezab saya
Identify and explain the three types of bandwidth?
T1 connection - Transmit data up to 1.544 Megabits per second. Upload bandwidth is the same as the download bandwidth. Used by medium sized businesses. European standard is called E1 and transmits data up to 2.048 Megabits per second.
T3 connection - Transmit data up to 45 Megabits per second. More expensive than T1 connection's. Used by larger businesses. European standard is called E3 and transmits data at 34.368 Megabits per second.
Metro Ethernet - Used by large companies such as banks. Connects main office with other branches using switched technology allowing for large amounts of data to be transferred fast and less expensively.
How can one convert 180 VDC to 24 VDC?
If you are talking about alternating current you would use a step down transformer with the primary being 240 volts and the secondary being 24 volts.
The total resistance would be 40 ohm.
What is the difference between cathode ray tube and flat panel?
The cathode-ray oscilloscope is an electronic display device containing a cathode-ray tube (CRT), used to produce visible patterns that are the graphical representations of electrical signals while CRT (cathode ray tube) is a tube that uses high voltage to fire electrons at a screen
What is the advantage of astable multivibrator using 555 ic over those made with opamp or bjt?
555 an IC which can be used for many applications and one of the application is astable multivibrator. For many applications we use IC 555 because its cost effective and have lot of features.
The main difference is astable multivibrator switches from one state to another state automatically i.e when a pulse is given to astable multivibrator, it immediately switches to high state and remains for certain time and switches back to low state. In 555timer you can decide your own application.
How rotar rotates of DC motor?
The rotor in a DC motor rotates because the magnetic field in either the rotor or the stator is constantly changing. If it is a brush type DC motor, then the rotor field changes as the rotor moves to a new position on the commutator. If it is a brush-less type DC motor, then there is some circuitry associated with the stator that changes the stator field.