hi,
There are a number of Online Calculator programs available on the Tools Section of ETO.
Two recent additions are:
1. Thermistor Resistance Calculator.
Used to determine the approximate resistance of a Thermistor at different operating temperatures.
The user enters the Beta, Resistance at Tref and the Tref temperature from the thermistor datasheet.
https://www.electro-tech-online.com/tools/thermistor-resistance-calculator.php
2. LED Series Resistor Calculator.
The user can enter the parameters from the LED datasheet together with the required current, supply voltage and the number of LED's in a series string.
Also it is possible to enter a preferred value series resistor and see the effect on the LED current.
To give some guidance regarding the effect of 'spread' of the voltage drop about the typical value, currents for +/-10% spread in Vfwd are also calculated.
https://www.electro-tech-online.com/tools/led-series-resistance-calculator.php
E.
There are a number of Online Calculator programs available on the Tools Section of ETO.
Two recent additions are:
1. Thermistor Resistance Calculator.
Used to determine the approximate resistance of a Thermistor at different operating temperatures.
The user enters the Beta, Resistance at Tref and the Tref temperature from the thermistor datasheet.
https://www.electro-tech-online.com/tools/thermistor-resistance-calculator.php
2. LED Series Resistor Calculator.
The user can enter the parameters from the LED datasheet together with the required current, supply voltage and the number of LED's in a series string.
Also it is possible to enter a preferred value series resistor and see the effect on the LED current.
To give some guidance regarding the effect of 'spread' of the voltage drop about the typical value, currents for +/-10% spread in Vfwd are also calculated.
https://www.electro-tech-online.com/tools/led-series-resistance-calculator.php
E.
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