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Oscilloscopes are an important tool in any electrical engineer’s lab. A specific and exact guideline is maintained to connect an oscilloscope to a circuit. In particular, proper grounding is very vital for your safety as well as the safety of…
If you have a two-wire motor, you first need to determine which wire is positive and which is ground. This is a common mistake made by people who want their squirrel cages to look good. In practice, single wire motors…
One can tell that the ceiling fan has a single capacitor if there is a single microfarad rating. If there are two, then it has a dual capacitor. Another way is to check the wiring terminals. If there are two…
The Digital-to-Analog Converter (DAC) and the Analog-to-Digital Converter (ADC) circuits are discussed here. A Digital to analog converter (DAC) converts binary digital data to an analog form by using an R-2R ladder (binary weighted resistor) network and a summing amplifier….
To test your Onan ignition coil, simply disconnect the positive and negative wires from the coil. Now connect a jumper wire from the batt + to the + coil post, and another to a good ground. Tap the ground jumper…
To zoom in or out a signal in an oscilloscope, you need to change the scales of the axes. Use the knob for the horizontal axis and set the µs/div to a lower value. This will allow you to zoom…
To determine the threshold voltage, use the equation of the drain current as a function of the gate to source voltage VGS in the VDS saturation region. VDS(sat)=> VGS-Vth defines the saturation region. The transfer curve at drain current saturation…
The bleeder resistor size is defined by the formula, R = -t/C*ln(Vt/Vu), where Vt is the momentary voltage, Vu is the initial voltage, C is the capacitance and t is the momentary period. A bleeder resistor is connected in parallel…