What is the shortest way to explain the voltage divider?
Answer:
Well, we like to use water a lot in explaining electricity, so try this. Fill a tank with water. Drill a hole at the bottom. The pressure of the full tank is available there, so you get the full flow. Drill a hole half way up. The pressure (voltage) there is only half as much (only half as deep there), so you get half the flow.
panel board, this is a device were in power supply is plug in and then all the branches for electrical use are hook in, each branch that are hook have thier own fuse in case of electrical problem the fuse on that branch will automatically shoots off.
If you connect a power source to resistors connected in series, the power source voltage will divide across the resistors in direct propotion to each resistor value compared to the total resistance. Example:
60 volts connected to a 60 ohm resistor in series with a 40 ohm resistor.
The total resistance = 60 + 40 = 100 ohms
The 60ohm resistor will have 60% of the 60 volts across it or 36 volts.
The 40 ohm resistor will have 40% of the 60 volts across it or 24 volts.
Thus you have divided the 60 volts into 36 and 24 volts points in the circuit.,
I think simplest formula is (R1 + R2+...+Rx)-->total resistance between two points to be mesured / (R1 +R2 + ..+Rn) ---> total resistance of resistance network multiplies with input voltage give divider voltage level of each steps.
If you learn Ohm's law (I=E/R), the math behind a voltage divider is quite simple, and it all works out to percentages, with the highest resistances having the most voltage dropped across them. Current (I) is constant in a series circuit, such as a voltage divider. The resistors (R), and therefore voltages (E) across them may vary. For example, if you have a 10 volt power supply with a 2 ohm, 3 ohm, and 5 ohm resistor in series across it, 1 amp will be flowing through each resistor, and 2 volts will be dropped across the 2 ohm resistor, 3 volts across the 3 ohm, and 5 volts across the 5 ohm. Furthermore,if you don't want this circuit to burn up, you'll need to know Watts Law (P=IxE or P=I^2 R). Your resistor wattage values would have to be a minimum of 2,3, and 5 watts, respectively.
A voltage divider is a series of resistors. The voltage across each such resistors is proportional to that resistor's value, when compared with the ratio of the total voltage and the sum of all resistors.
Example:
Total voltage = 100 V
2 Resistors, 25 Ohm and 75 Ohm in series
Voltage across 25 Ohm = 25 Volt
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