Electronics Engineering

if R4 is the only resistor (the load), then the drop would be the same as the energy source

A: THE WORD IS LINEAR. yes it is not a very linear device as a function of current

resistance is the opposition to the flow of electric charge

As long as the charger is connected to its power source it will take a small amount of power from that source (even if the phone is not connected to it), regardless of whether it is an AC "wall wart" charger or a cigarette lighter charger (although normally turning the car ignition off turns the cigarette lighter outlet off, so if it drains the car battery the car ignition switch may have a problem). If the phone is connected to the charger it may continue to take extra power even with the phone fully charged (I have a Tracfone that will drain my battery powerpack completely (if not connected to a charger its internal battery drains completely in less than 2 days even if I'm not using it at all -- this phone has something wrong in it).

The real issue is now fast the charger is draining the battery.

BTW, I am assuming above that you mean an external battery that the charger is connected to, not the internal battery of the cell phone itself (if this is the case I would say the phone is seriously defective as this would normally not be possible).

1. binary divide by 32768 between the crystal oscillator and the seconds digit
2. decimal counter (0 to 9) for the seconds digit
3. six counter (0 to 5) for the tens of seconds digit
4. decimal counter (0 to 9) for the minutes digit
5. six counter (0 to 5) for the tens of minutes digit
6. duodecimal counter (1 to 12) for the hours digits
7. binary counter for the AM/PM indicator

A transparent latch (or simply a latch) is a digital logic device that can store two stable states with a level sensitive control signal called enable/latch, when this control signal is in the enable state the latch device transparently passes its input signal to its output, when this control signal is in the latch state the latch device holds its output in the current state and ignores the input signal.

This behavior is different from flip flops (e.g. D flip flop), which are usually clocked and often edge sensitive not level sensitive.

It means that the glass envelope has leaked and is no longer a vacuum. Air inside has oxidized the getter. They generally no longer work in this condition.

It is unclear what you are asking, but the hazard from all CRTs is that they emit x-rays (an x-ray tube is a special purpose type of CRT designed for the one purpose of generating as much x-rays as possible).

In CRTs used for displays the glass is leaded to reduce the level of x-rays to a "safe" level, but depending on the exact tube used these x-rays can still reach from 1 to 3 feet from the tube. Most are less than that.

They do not follow the linear Ohm's Law equation relating current flow and voltage, like normal conductors do.

Well, ppm usually means "parts per million". But I don't recall seeing this on any oscilloscopes.

PPM could mean "Pulses Per Minute", which might make sense on an oscilloscope.

The oscillator circuit, which is usually quartz crystal controlled with the quartz crystal in a temperature regulated oven to stabilize its resonant frequency.

The switching frequency in a drive system affects both its performance and efficiency. Higher switching frequencies can lead to improved response times and reduced output voltage ripple, enhancing overall control and performance. However, this can also increase switching losses, generate more heat, and require better thermal management. Conversely, lower switching frequencies reduce losses but may lead to slower response times and increased output ripple.

The main reason is that even when the full channel bandwidth is used there is always overhead required to manage the information transfer, so some of the total bandwidth will be consumed by this overhead. So only the remaining bandwidth is potentially available for throughput.

This is true for both digital and analog communication channels.

An example of overhead present in both digital and analog telephone communication channels are "alarm" signals used to report equipment failures to assist in equipment maintenance.

Some examples of overhead in computer network channels are start bits, stop bits, parity bits, CRC codes, sync bytes, and packet headers.

Also in many situations the traffic load is low for long periods of time so in those periods much of the potentially available throughput will not be made use of.

Impossible to say without knowing the voltage

In most discrete bipolar junction transistors the substrate is the collector. In monolithic integrated circuits the bipolar junction transistors are electrically isolated from the substrate, either by reversed biased junctions or insulator (e.g. sapphire). Some older bipolar junction transistor types (usually made with germanium) the substrate is the base. In bipolar point contact transistors the substrate was the base.

The first hot filament diode tube was invented in 1904 by Fleming, the first hot filament triode tube was invented in 1907 by DeForest. However it was not until 1913 that it was determined that high vacuum was actually needed for efficient and reliable operation of these tubes. So true hot filament vacuum tubes were not made and used until 1913.

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A bridge has an upper frequency limit because above that frequency the measuement accuracy fails because of stray capacitance and inductance inside the bridge device.

Please give examples.

It doesn't actually have negative ions, it has majority holes that have recombined with minority electrons, just as the n region has majority electrons that have recombined with minority holes. In both cases are charges are distributed over adjacent atoms and no atom actually becomes either a negative or positive ion.

Yes. The Fourier transform of a signal to the frequency domain will give rise to a graph that has energy (is greater than zero) at only the base frequency and its harmonics.