Antique radio guys use a variac (variable AC transformer) to start out old radios at a much lower voltage for this reason. Also some caps will decrease in value if used too far below their rated voltage. (Caps that do this are usually, but not always, electrolytic.) And then there was...
There are several design choices: • Starting from a typical AC outlet, a step-up transformer could be directly used, with the AC rectified to DC just prior to the final output. These transformers have marginal cost, and the output would be fixed. • Starting from a typical AC outlet,...
The design of a power cable can significantly affect the reactance of these signals within the power supply. The power cable is effectively part of the primary winding of the power transformer. The transition between the various metals used in a power cable and its connectors can cause ...
Furthermore, I changed the power input from 120VAC to 12VDC and consolidated the transformer functions formerly on 4 computers onto one high-efficiency (92% with power factor of .9) transformer which serves all 4 computers. There are many, many things that can be done on supply side and...
1: Literally unplugging the device. Leaving it physically plugged and just flipping a power switch instead often doesnotremove power from absolutely everything. 70 comments on “Reboot or Power Down: Why Do So Many Tech Support Solutions Start with That?”...
At the system level, the ADC front-end could use an amplifier, a transformer, or a balun, but implementations using an amplifier are most common. An amplifier could be used for one or more of the following reasons: • Provide gain to the input signal to increase the ADC resolution. ...
1: Literally unplugging the device. Leaving it physically plugged and just flipping a power switch instead often doesnotremove power from absolutely everything. 70 comments on “Reboot or Power Down: Why Do So Many Tech Support Solutions Start with That?”...
but not usually better than ten microseconds. This level of accuracy is acceptable for some but not all substation applications. Modulated IRIG inputs to IEDs are generally transformer-isolated and provided with an automatic gain-control stage, so as to accept input signals with a wide range of...
wall power to a speed control to a transformer to an a/c electric motor. but with a twist.the power is from a wind-up power spring with a switch set where the spring would trip when it un-winds and when it retracts to a certain point,the spring would be run on a gear reduction ...
power supplies that generate an incredible amount of transient noise when the rectifiers switch off. The design of a power cable can significantly affect the reactance of these signals within the power supply. The power cable is effectively part of the primary winding of the power transformer. The...