12 VOLT POWER CONVERTER GENERATOR
12 VOLT POWER CONVERTER PORTABLE

This conversion method can increase or decrease voltage.

The storage may be in either magnetic field storage components (inductors, transformers) or electric field storage components (capacitors). Switched-mode DC-to-DC converters convert one DC voltage level to another, which may be higher or lower, by storing the input energy temporarily and then releasing that energy to the output at a different voltage. Practical electronic converters use switching techniques. DC-to-DC converters are widely used for DC microgrid applications, in the context of different voltage levels. The entire complex circuit is cheaper and more efficient than a simple mains transformer circuit of the same output. Consequently these techniques are used even where a mains transformer could be used for example, for domestic electronic appliances it is preferable to rectify mains voltage to DC, use switch-mode techniques to convert it to high-frequency AC at the desired voltage, then, usually, rectify to DC. DC-to-DC techniques that use transformers or inductors work at much higher frequencies, requiring only much smaller, lighter, and cheaper wound components. This makes them expensive, and they are subject to energy losses in their windings and due to eddy currents in their cores. Transformers used for voltage conversion at mains frequencies of 50вЂ“60В Hz must be large and heavy for powers exceeding a few watts. Some exceptions include high-efficiency LED power sources, which are a kind of DC to DC converter that regulates the current through the LEDs, and simple charge pumps which double or triple the output voltage.ДC-to-DC converters which are designed to maximize the energy harvest for photovoltaic systems and for wind turbines are called power optimizers.

Most DC-to-DC converter circuits also regulate the output voltage. Switched DC to DC converters offer a method to increase voltage from a partially lowered battery voltage thereby saving space instead of using multiple batteries to accomplish the same thing. Additionally, the battery voltage declines as its stored energy is drained. Such electronic devices often contain several sub- circuits, each with its own voltage level requirement different from that supplied by the battery or an external supply (sometimes higher or lower than the supply voltage).

12 VOLT POWER CONVERTER PORTABLE

While it was possible to derive a lower voltage from a higher with a linear regulator or even a resistor, these methods dissipated the excess as heat energy-efficient conversion became possible only with solid-state switch-mode circuits.ДC-to-DC converters are used in portable electronic devices such as cellular phones and laptop computers, which are supplied with power from batteries primarily. Although by 1976 transistor car radio receivers did not require high voltages, some amateur radio operators continued to use vibrator supplies and dynamotors for mobile transceivers requiring high voltages although transistorized power supplies were available. For example, first is converting the DC power supply to high-frequency AC as an input of a transformer - it is small, light, and cheap due to the high frequency - that changes the voltage which gets rectified back to DC. The introduction of power semiconductors and integrated circuits made it economically viable by use of techniques described below.

12 VOLT POWER CONVERTER GENERATOR

(The motor and generator could be separate devices, or they could be combined into a single 'dynamotor' unit with no external power shaft.) These relatively inefficient and expensive designs were used only when there was no alternative, as to power a car radio (which then used thermionic valves (tubes) that require much higher voltages than available from a 6 or 12В V car battery).

Where higher power was needed, a motorвЂ“generator unit was often used, in which an electric motor drove a generator that produced the desired voltage. Before the development of power semiconductors, one way to convert the voltage of a DC supply to a higher voltage, for low-power applications, was to convert it to AC by using a vibrator, then by a step-up transformer, and finally a rectifier.

12 volt power converter