By Sasha Sara. Power. Publised at Monday, December 18th 2017, 20:48:32 PM. There are two types of voltage regulators, shunt and series. The name comes from where the control element (typically a transistor) is placed. Except for the special case of a Zener diode shunt regulator which is open-loop, virtually all voltage regulators are closed-loop high-gain proportional control systems.
By Sasha Sara. Car Wiring. Published at Friday, January 19th 2018, 07:05:04 AM. On its downstroke, a piston draws air into the cylinder. On the compression stroke, the fuel injection system (depending on how it’s timed) sprays fuel into the combustion area, and the resulting cylinder pressure (and residual heat from previous firings) combusts the fuel/air mix, etc.
By Lydie Honorine. Car Wiring. Published at Friday, January 19th 2018, 06:21:08 AM. When fitting extra accessories, such as a rear window heater which consumes a heavy current, always wire it through the ignition switch. Some ancillary components can be operated without the ignition turned on by turning the switch to the "auxiliary" position. A radio is usually wired through this switch, so that it can be played with the engine off.
By Jessica Mireille. Motor. Published at Thursday, January 18th 2018, 22:32:39 PM. An ideal step motor would have zero mechanical friction, its torque would be proportional to ampere-turns and its only electrical characteristic would be inductance. Ampere-turns simply mean that torque is proportional to the number of turns of wire in the motor’s stator multiplied by the current passing through those turns of wire.
By Bertille Solange. Circuit. Published at Monday, January 15th 2018, 19:06:47 PM. Since single-layer/single-sided PCBs only have their various circuits and electrical components soldered onto one side, they are easy to design and manufacture. This popularity means that they can be purchased at a low-cost, especially for high-volume orders. The low-cost, high volume model means they are commonly used for a variety of applications, including calculators, cameras, radio and stereo equipment, solid state drives, printers and power supplies.
By Bertille Solange. Motor. Published at Monday, January 15th 2018, 17:21:59 PM. At this point it is important to introduce the concept of overdrive ration. This is the ration between the power supply voltage and the motor’s rated voltage. An empirically derived maximum is 25:1, meaning the power supply voltage should never exceed 25 times the motor’s rated voltage or 32 times the square root of motor inductance. Below is a graph of measured iron losses for a 4A, 3V motor. Notice in Figure 16 how the iron losses range from insignificant to being the major cause of heating in the motor compared to a constant 12W copper loss (4A times 3V).
By Alix Loane. Motor. Published at Sunday, January 14th 2018, 19:23:49 PM. The voltage of your power supply is entirely dependent on the inductance rating of your motor, which we learned is translatable to the number of turns of wire in the stator. Every motor model will have a different inductance rating and will therefore have a different maximum voltage. To figure out what the maximum power supply voltage should be, use the following formula with the motor’s inductance in millihenries (mH) used for the L value.
By Valentine Sybille. Motor. Published at Saturday, January 13th 2018, 16:12:10 PM. Motor output doubles when the power supply voltage is doubled for either series or parallel-wired motors. Notice that a parallel-connected motor delivers performance identical to a series-connected motor running at twice the power supply voltage.
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