First of all, you need to choose the resistance value. To do that you useOhm’s law. One common example is tofind the resistor value you need for an LED. Next, you need to consider the power that the resistor needs to dissipate. Power dissipation in a resistor can be calculated with ...
This ensures less than 1% inaccuracy in the voltage measurement. However, lower resistor values can increase power loss in the resistive divider, which may be unsuitable for high-efficiency designs. With the above condition, the resistors can be calculated as follows: R2 = Vf/ Ir1_2--- (10...
On the other hand, fanless power supplies can’t deliver too much power as the components will get too hot to manage without a fan circulating cool air over them. Seasonic offers a few fanless PSUs, and the highest wattage I’ve seen is 500W on their Prime Fanless PX-500 Modular unit....
When bipolar transistors are connected in parallel, always make sure to add a calculated emitter resistor for each transistor. This resistor enables the BJTs to share the load current and thermal dissipation uniformly, which solves the thermal runaway problem in BJTs If you want to avoid the emit...
To perform a simple test on the performance of your battery(s) you’ll need a volt-ohm meter, an amp meter, and a variable resistor would be nice, but is not absolutely necessary. Also a calculator would be nice unless you really like doing math the old fashioned way, using your head...
Advanced users can experiment with different wattages and resistor coils to change the way their vapor works, but most users should follow the manufacturer’s recommendation for the coil. If you use your evaporator daily, you will probably want to change your coil every few weeks, but if your...
The REXT terminal is a constant voltage output terminal, and the standard differs depending on the product. The allowable power value of the external resistor depends on this terminal voltage and the value of the external resistor. Please refer to the da
As per the application notes of bta08-600cw, to control a three phase induction motor, for triggering the triac gate, the value of resistor is shown as 510 ohm. How is this value arrived at? What would be the resistor wattage?
The load could simply be a large resistor. The problem is knowing what the ohms is and its wattage rating is. For example, you could charge up a battery fully and check its voltage. The voltage might show normal. However, if you try to use it under load the voltage might drop to ...
the requirements of the job at hand. Potentiometers, such as those used for volume and tone control, are a form of variable resistor. These devices can also be used in simple delay circuits to slow down the flow of electricity into a capacitor, thereby creating a time delay in the ...