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John1397
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How many led's 20ma at 3 volt can one run from a fixed supply voltage of 110 volt dc and a maximum supply of 20ma? I come up with 36.
The number of LEDs that can be powered with a fixed supply of voltage depends on the voltage and current requirements of the LEDs. Each LED has a specific voltage and current requirement, and the total current requirement for all the LEDs should not exceed the maximum current output of the power supply. To determine the number of LEDs that can be powered, divide the maximum current output of the power supply by the current requirement of each LED.
Yes, you can connect multiple LEDs in series or parallel with a fixed supply. However, it is important to ensure that the total voltage drop of the LEDs in series does not exceed the supply voltage. In parallel, the total current requirement should not exceed the maximum current output of the power supply.
To calculate the resistor value for your LEDs with a fixed supply, you will need to know the supply voltage, LED voltage, and LED current. Use Ohm's law (V=IR) to determine the resistor value needed. Subtract the LED voltage from the supply voltage, and then divide that by the LED current to get the resistor value in ohms.
Yes, you can use a voltage regulator to power your LEDs with a fixed supply. A voltage regulator will ensure that the supply voltage remains constant, even if the demand for current changes. This can be useful if you are using a fixed supply with a high current output.
The maximum number of LEDs that can be powered with a fixed supply will depend on the voltage and current requirements of the LEDs, as well as the maximum current output of the power supply. To determine the maximum number of LEDs, divide the maximum current output of the power supply by the current requirement of each LED. However, it is important to always check the data sheet of your power supply and LEDs to ensure safe operation.