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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
Constant current generation of linear sweep voltage using op-amp?
When using the Op-amp we get constant current generation of the linear sweep voltage.
Where do you set meter when checking for ripple?
When checking for ripple on a power supply, you should set the meter to the AC voltage setting. Connect the meter probes across the output terminals of the power supply while it is under load, if possible. This allows you to measure any AC voltage fluctuations (ripple) superimposed on the DC output. Ensure that the range is appropriate for the expected ripple voltage level.
In rectifiers, a filter is a circuit component or arrangement used to smooth out the output voltage by reducing the ripple voltage after the rectification process. It typically consists of capacitors, inductors, or a combination of both that store and release energy, maintaining a more constant DC output. This smoothing is essential for ensuring that the power supply delivers a stable voltage to electronic devices, improving their performance and longevity.
What type of modulation is pulse position modulation and why?
It is a type of Pulse modulation as in PPM the position of pulse of carrier pulse train is varied in accordance with the modulating signal.
What is the color subcarrier frequency?
A modulated monochrome signal whose side-bands convey color information.
How you can change a constant DC voltage to a variable DC voltage?
By installing the varialble resistor in the circuit,the constant dc voltage would change .
The amount of frequency deviation for a frequency-modulated signal is determined by the?
The signals frequency directly.
When a J-K flip flop is wired it is called a master circuit. This is one of 2 groups.
What do engineers use the signal to noise ratio for?
Signal to noise ratio is a measure of signal strength to the background noise. Engineers use the signal to noise ratio to improve digital signal processing.
Is it suitable to apply voltage 12V 30mA to charge 4V 750mA battery?
No, the charging voltage needs to closely match the battery or BOOM!
What do you need to do to be able to use your old television and aerial antenna after spring 2009?
If your old tv has no built in ATSC Digital Tuner , then you need a digital to analog converter box. This box receives the ATSC Digital Signal and converts it to NTSC Analog , for Tv's that only have a NTSC Analog tuner.
What origin did quadrillion come from?
Quadrillion indicates either one thousand million million (if ones uses the short scale) or one million million million million (if one uses the long scale). The word quadrillion comes from combing the English 'quadri' for four with the French million.
eq1) Rseries = R1 + R2 + R3 + ...
eq2) Rparallel = (R1-1 + R2-1 + R3-1 + ...)-1 or eq3) Rparallel = (R1 x R2) / (R1 + R2)
Note the second Rparallel equation can be used for only two resistors.
STEP 1 - Combine all parallel resistance into series resistances using eq2 or eq3.
STEP 2 - Combine all series resistances into a single resistance using eq1.
STEP 3 - Done.
hope this helps.
Which companies make digital calipers?
Several companies make digital calipers. Digital calipers are distance measuring tools which display the readings digitally instead of on an analog dial. Control Company, Mitutuyo, and Park Tool Company are three companies which supply digital calipers.
What is dangerous limit of voltage for 50Hz AC current for adult?
The danger level is dependent on the individual, and the individuals environment. You need to understand the danger of electricity is due to the fact that our bodies operate on electrical impulses. When electrical impulses are induced into your body by forces outside your body that override your brain's signals, bad things begin to happen. The number 1 factor that determines what force (ie voltage) is necessary to "inject" electricity into your body is the resistance of your epidermis. This resistance is impacted by dryness, fat content, stress levels, the presents of salts and other minerals, and a host of other things.
Current flowing through your body in excess of ~20mA at 50Hz can be dangerous. Your body's resistance is likely to be somewhere between 1000 and 500000 ohms. Using ohm's law, as little as 20 volts could, under the right conditions, be dangerous. That is why you should always treat electricity with respect - Don't turn on/off lights with soaking wet hands; don't use electronics plugged into a wall socket in a bathtub, turn off the circuit breaker if you are doing any home wiring that impacts that circuit, etc.
By "Dangerous", I'm referring to the let go current levels. These are the current levels where you no longer have control of whatever part of your body has completed the circuit. At these levels, the signals from your brain are too small relative to the outside influence to tell your muscles to do anything. That's why it's called the let go threshold - you can't let go anymore! As little as 50 volts can cause ventricular fibrillation/death in a matter of minutes.
