Car reading 17V+ in the battery when running, how to fix?
2018年8月25日 · Hi, I have a 2004 Toyota Matrix with 270 000km. It's working great but today when i started my car the battery was going up to 17.2V (i have a battery voltage reader in the car at all time). It's the first time it went up there, it usually stays in …
What Are Tolerances on Dimensions with Deviations in DIN 16901?
2018年6月27日 · In summary, the conversation was about a drawing referencing DIN 16901 for tolerances and a table of DIN 16091 that was unclear. The first half of the table had + and - symbols for tolerances while the second half did not. It was assumed that the second set of numbers were just double the top set for the given row/col.
Measuring 3 Phase Current: Tips for Determining Motor Draw
2010年1月20日 · Taking the average is okay, but I generally like to consider the highest reading when sizing components (wire, contactor, fuses, etc.). As things get older and worn (contact resistance, connection torque, insulation breakdown, etc.), they are likely to cause higher current in the motor, so I'd rather oversize a bit anyway.
Current draw of a motor, under different situations - Physics Forums
2012年3月13日 · where the r turns to z. on an induction motor (lawn mower, power drill ?, furnace motor, fridge/freezer motor) when the less than designed voltage is applied to the device that is under load, the induction motor will try to = the situation by drawing more amps to make up for loss of voltage and over heat the windings.
Delete Old Revision Clouds on Drawings When Doing New …
2020年8月21日 · I believe it says you're supposed to delete old revision clouds on a drawing when putting a new revision on the drawing. I read Y14.35 "Revision of Engineering Drawings" 2 or 3 times and I checked Y14.1 Engineering Drawing Practices, Section 4.4 "Revisions of Engineering Drawings and Associated Lists", but can't find anything that says what we ...
Necessary power for reading glasses - Physics Forums
2011年11月10日 · Reading glasses are designed to correct near vision, while regular glasses correct for distance vision. It is important to get a separate prescription for reading glasses to ensure proper vision correction. How often do I need to change the power of my reading glasses? The power of reading glasses may need to be changed as your eyesight changes.
Charging Capacitor with one terminal grounded - Physics Forums
2024年2月15日 · In the drawing from the book, with no earth resistance, the current will be limited by other resistances, like internal to the battery, or the connecting wires. When the resistance gets very small, there are other much more complex things happening with the generated magnetic fields that limit the current (that should be a different thread ...
Reading a spectrum graph for vibration analysis - Physics Forums
2010年5月15日 · Analysis Graph Reading Spectrum Vibration In summary, the conversation discusses the confusion around amplitude at different frequencies, specifically 1x, 2x, and 3x. The 1x, 2x, and 3x frequencies are harmonics or multiples of the original frequency, indicating how many times the shaft rotates in a given time period.
How to Measure Internal Resistance of a Battery - Physics Forums
2023年2月14日 · A commonly encountered school-level Physics practical is the determination of the internal resistance of a battery - typically an AA or D cell. Typically this is based around a simple model of such a cell as a source emf in series with a small resistor. The cell is connected to a resistive load and (in the simplest case where load resistance is known) only open circuit …
Orientation of 8-Pin IC Without Notch: Help Needed - Physics …
2009年1月9日 · Hello! I have an 8-pin IC that does NOT have a notch in it, and I'm a bit confused on the orientation. The schematic I'm using specifies the orientation using a notch, as does the datasheet from the manufacturer. So, as you can see, I'm in …