Never heard of a dictator in the electrical trade. Well, I shouldn't say that, there was one journeyman when I was an apprentice.
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
In electronic circuits a capacitor is used to pass AC and block DC.
There are lots of diodes - a "diode" is simply a device that has two electrical connections.If you refer specifically to the rectifying diode, it is used to convert AC current to DC current - so, it is used in a circuit that has BOTH AC and DC.
Impedance.
simple capacitor can do this job (to block dc and pass ac).
You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
The difference AC and DC grounding is that AC is alternate current and DC is direct current. Grounding for both AC and DC is the same.
Because some appliances work with ac current and some with dc current.
Resistance Voltage (both AC and DC) Current (both AC and DC)
Both AC and DC are current methods in which electrons move along a wire
both. it depends on the application.
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
current flows in both directions, depending on the AC voltage, i.e when ac is higher, current flows to the dc side, and vice versa
In electronic circuits a capacitor is used to pass AC and block DC.
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
A diode blocks current flowing in one direction, and passes a current going into the other direction (with a little potential energy loss). DC is a current flowing into one direction all the time. therefore if you put a diode in a dc circuit it will either always block or always let it pass (provided a certain amount of supply voltage). if you have an ac circuit the current alternates (ac=alternating current) most of the cases the current flows half of the time in one direction and half of the time into the other direction. so you will have both cases 50% blocking 50% passing through. so if you put an LED into an ac circuit, no matter what way you put it in you will always see light.
AC/DC has the dash in the middle because it was named after a sticker on a sewing machine and that sewing machine was both alternating current and direct current.