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Voltage, otherwise known as electrical potential difference (denoted ∆V and measured in volts) is the difference in electric potential between two points (adapted from Wikipedia). Voltage can be constant (DC) or varying (AC).

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supplies, but what is the purpose when a shared power source is used? Assume a control card with a 12v output for a NC limit switch. A voltage divider (using two resistors) lowers the voltage to an … can only think that a spike in the 12v output would produce an unacceptably high output after the voltage divider. …
asked May 8 '18 by M-R
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reached circuit 2 (in the form of a neutral wire)? Couldn't I just send the voltage along one wire and then use the ground in the second circuit to complete the circuit, effectively having just one wire between the circuits? …
asked Jun 29 '16 by M-R
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4answers
Suppose we want a +/-10v control signal, where 0x0 (to the DAC) = -10v and 0xFFF = +10v. Firstly, how do we alter the signal so that we can have a negative voltage, dependant on the DAC input? Secondly, how can we scale the signal so that it fits within the -10 to +10 range? …
asked Dec 23 '16 by M-R
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1answer
What would be the most appropriate way to lower a 24V voltage in my circuit to a 20V supply voltage for my differential amplifier? I imagine resistors wouldn't be suitable if the op-amp Vout is always changing. Would a regulator, etc work? …
asked Feb 2 '18 by M-R
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2answers
1011 0111 would result in a negative voltage and 0111 1101 1000 would result in a positive voltage. What formula could be used to calculate the desired voltage(+/-)? …
asked May 25 '16 by M-R
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2answers
Assuming VCC is +5V, why would the input pin receive +5V, and not a reduced voltage (as controlled by the resistor)? When the circuit is closed (button is pressed), why doesn't the input pin have …
asked Apr 23 '18 by M-R
4
votes
4answers
Suppose we have a PWM signal which controls the speed of a motor and a digital pin which specifies which direction a motor is travelling in, how can we convert these signals into 1 +/- 10V signal wher …
asked May 25 '16 by M-R