When you connect a low ohm resistor in parallel with a circuit, the current flows through the shunt resistor -R- and generates a voltage drop. Typical shunt measurement hook-up in a simple circuit We can measure this drop and applyOhm’s lawto calculate the current. ...
Power supply modulation is achieved by combining the input ripple signal with a clean dc voltage using a line injector/coupling circuit. Supply ripple is injected as a sine wave signal from the signal generator to the power supply pin. The sine wave modulated into the RF carrier creates ...
Caution: If the master station connects directly to your home's electrical system, be sure to de-energize the circuit involved and take precautions to prevent someone else from turning it back on while you are working on the circuit. If a transformer is supplied with the master station to po...
In this case we should expect that the negative section of the signal to also contribute to the energy delivered to the load. To calculate its RMS value, let’s split the signal in two: from 0 to t1 and from t1 to T as in (6). (6) where with u11(t) and u12(t) I noted t...
In an electrical system, increasing either the current or the voltage will result in higher power. Let's say you have a system with a 6-volt light bulb hooked up to a 6-voltbattery. The power output of the light bulb is 100 watts. Using the equationI = P/V, we can calculate how...
1 MHz sampling frequency, two single ended or one differential signal (ADC1 and ADC2 pins), embedded channels for temperature and battery voltage sensing, embedded digital filter with down sampling. The embedded digital filter can be used to process the PDM s...
A device with 0.5LSBs of INL can give 0.0122% error or 13 bits of accuracy (with gain and offset errors removed). To calculate best-case accuracy, divide the maximum INL error by 2N, where N is the number of bits. In our example, allowing 0.075% error (or 11 bits) for the ADC ...
VM Figure 13: Equivalent diagram to calculate the measuring resistance, RM Example 3: Measuring current higher than the maximum value given in the datasheet LEM datasheets indicate the transducer operating conditions, with a measuring range that is generally limited to 150 to 200 % of the nominal...
} // Calculate RMS value starting from the detected zero crossing double sumSquaredValues = 0.0; int startIndex = zeroCrossingDetected_index % 380; for (int k = 0; k < 384; k++) { int index = (startIndex + k) % 380; // Add the squared value to the...
A LED indicator is also a useful thing to have. Add it to the output of the power supply, so when you power the speakers, LED will glow. Check thisinstructableto find out how to calculate the resistor value for your LED. Most pre-assembled amplifier boards have a potentiometer for volume...