Before selecting a suitable DC-DC adjustable step-down module, it is crucial to determine the electrical requirements of the high-power LED you intend to drive. This information is typically provided in the LED’s datasheet and includes the following parameters: Forward Voltage (Vf): This is t...
Last year 3.15 evening scene test link, the moderator for consumers introduced a verification of the quality of LED light simple way: with mobile phone camera to the light bulb, if the viewfinder appe
So assuming a 12-volt power source and a white LED with the desired current of 10 mA; The formula becomes Resistor = (12-3.4)/.010 which is 860 ohms. Since this is not a standard value I would use an 820-ohm resistor. We also need to determine the power rating (watts) of the r...
LED current is the ampere rating specs of the LEDs used Therefore here U = 12V LEDfwdV = 3.3V x 3 = 9.9V since 3nos are there in each series and 3.3V being the forward voltage spec of each LED LED current = 350mA, let's take it 300mA or 0.3Amp to keep things cooler. Substit...
Smart meters allow utilities to determine how much energy you pull from the grid at any point in time. With this information, utilities can come up with better ways of pricing the electricity they provide. They can bill you for the electricity you need, based on when and how much you have...
Step 1: Determine the Input Voltage The input voltage is the voltage of the AC power source that you want to convert to DC. In our case, we want to convert 120V AC to 12V DC. Step 2: Choose the AC to DC Converter Choose the appropriate AC to DC converter based on your requirements...
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The anode allows the current to enter the LED while the cathode makes the current go out of the LED. 4. Positivity and Negativity You can also determine the anode and cathode as per their charges. It is one of the simplest methods to determine these two terminals. The anode is always...
As the depletion zones are reduced, charge can move from the emitter to the collector more easily -- the transistor becomes more conductive. The size of the depletion zones, and therefore the conductivity of the transistor, is determined by the voltage at the base electrode. In this way, ...
The exact point of contact is determined by measuring the voltage changes. The device interprets this information to determine the touch location. The system then responds to the touch input. Resistive screens can be operated with any object and are generally more durable, but they lack the sens...