How do you restrict amperage delivery without restricting voltage - I want a device to receive only half an amp at 240V - Maybe a variable device like a rheostat or potentiometer?
Any device that adjusts resistance will inevitably adjust current by means of lowering voltage on the exit side of the resistor as dictated by Ohm's Law.
Ohm's Law states:
Current (Amperage) is equal to Voltage divided by Resistance, therefore, as Resistance increases, Current decreases under a constant Voltage supply.
Given that both rheostats and potentiometers adjust resistance, I would have to say that it would be impossible to lower your current draw to .5A without manipulating voltage via the two devices you mentioned.
It should be noted that the supply voltage on the feed side of the rheo or pot would remain the same...it isn't changed until it passes through the variable resistor. The output current would be lower under the same load because the load would have a new, lower supply voltage.
Suggestion: If you wanted to set the current draw to .5A...it's easy to accomplish that...or close to it. Just take an amp draw on the device running at it's nominal operation. Then record your supply voltage to the device....I assume that's 240V..but measure it to be sure. Then divide your voltage by your current...that will give you the resistance of the device. Now...divide your voltage by .5...that will give you your desired resistance. Subtract the desired resistance from the actual device resistance. Now...purchase resistors that will add up to calculated difference then wire them in series on the supply voltage. See if this doesn't get you close. You might have to fudge around a bit since there are variable I cannot account for.
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Is it against the law for a county jail to restrict the type of mail an inmate can receive like not allowing them to receive personal letters or pictures?
How do you restrict amperage delivery without restricting voltage - I want a device to recieve only half an amp at 240V - Maybe a variable device like a rheostat or potentiometer?
Ohms law states that in a series circuit voltages change at every device, while amperage remains constant . Whatever current is applied to a series loop, or leg of circuitry must pass through every point of that loop. However Ohms also says that voltages are constant while currents change in PARALLEL loops. If for example 240 volts are offered the chance to push current through two loops, one with say a 10 thousand ohm resistance…
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The purpose of a fuse is to restrict amperage traveling through an electrical circuit to a specified value. It does this by inserting itself into the circuit and running the current through a metal strip inside the fuse. When the circuit is carrying to much amperage the metal strip will heat and then melt away, breaking the circuit and protecting anything that would be damaged due to the overload.
The purpose of a fuse is to restrict amperage traveling through an electrical circuit to a specified value. It does this by inserting itself into the circuit and running the current through a metal strip inside the fuse. When the circuit is carrying to much amperage the metal strip will heat and then melt away, breaking the circuit and protecting anything that would be damaged due to the overload. In order to correct it, you…
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1 - Barring the expression of religious ideas or oppinions through speech or symbols. 2 - Restricting access to religious materials and institutions by preventing a place of worship from existing or being built or restricting access to religious texts. 3 - Preventing someone from the practice of their religion by disallowing certain clothing, acts, gestures, or activities.