We keep introducing the new updates in the DCACLAB in order to provide you the more real like experience in the virtual lab.
Maximum Current for LED
In this update the LEDs will blow if the current exceeds above 20mA or 0.02A. You will have to apply a suitable value of resistance in order to use the LED just similar to real life circuits.
Below is the example of three circuits, Circuit A which has no resistance, Circuit B with resistor that has a value below then required and Circuit C with resistor that has a sufficient resistance.
- In the Circuit A there is no resistance connected in series to the LED which causes the flow of current up to 35.93A which is far more the required current for an LED to operate. Hence, the LED blows.
- In the Circuit B there is a resistance of 11 Ω connected in series to the LED. In this condition there is the current of 0.051A flows through the LED which is more than the maximum of 0.02A which causes the LED to blow.
- In the Circuit C there is the resistance of 22 Ω is connected in series to the LED. In this condition there is a current of 0.019A flows through the LED. Since the current is below 0.02A the LED is intact and works fine.
LED Color and its Corresponding Threshold Voltages
With a recent update in the DCACLAB a feature in LED was introduced in which you select the color of the LED and its corresponding threshold voltage takes into effect.
Below is the list of the color and its threshold or forward voltage which you will find while switching the colors of the LED.
| Color Name | Threshold or Forward voltage (Vf @ 20ma) | |
| Ultra Red | 1.8 | |
| Super Red | 2.2 | |
| Super Orange | 2.2 | |
| Orange | 2.1 | |
| Yellow | 2.1 | |
| Cool White | 3.6 | |
| Super Lime Yellow | 2.0 | |
| Super Lime Green | 2.0 | |
| Pure Green | 2.1 | |
| Aqua Green | 3.5 | |
| Blue Green | 3.5 | |
| Super Blue | 3.6 | |
| Ultra Blue | 3.8 |
Table source : oksolar.com
We keep improving the Lab in order to provide you the more real life experience with the electrical and electronics. We recommend you to subscribe to our news letter in order to get the exciting updates we make regularly.