DC-AC Inverters Information
DC/AC Pure Sine Wave Inverter. Image Credit:Analytic Systems Inverter Image Credit: Digi-Key
DC to AC inverters are used for converting direct current (DC) into alternating current (AC). They are also known as DC to AC converters.
About DC to AC Inverters
DC/AC power inverters convert DC power from a battery or other power source (mostly 12 VDC) to standard household AC power (110VAC). Inverters use oscillator circuts to accomplish the inversion through a series of steps. The DC circuit flows down one end of the circuit with an electromagnet. When the current hit a magnet, the magnet activated and the current flow would change to the other side of the circuit cutting power from the electromagnet.
The GlobalSpec SpecSearch database allows industrial buyers to select DC to AC Inverters by type input values, output values, and options.
DC to AC inverters can be one of several different styles. These include princ circuit board mount, or card mount, laboratory bench or portable configuration, rack mount, DIN rail mount, wall mount, and stand alone or tower mount.
Nominal DC input values for DC to AC inverters can be 12 VDC, 24 VDC, 48 VDC, 110 VDC, 125 VDC, an 250 VDC.
Important output specifications to consider when searching for DC to AC inverters include,
- Maximum voltage
- Maximum steady state current
- Maximum power
- Frequency range
Waveform output choices include,
Wave Examples. Image Credit:Wikipedia
- Pure sine wave is the best waveform, as it is the shape of an (ideal) AC electrical signal from the wall. The highest-quality inverters produce a true sine wave output, which requires fairly expensive components in the inverter. True sine wave outputs are normally found only in higher-end models.
- Square wave is sort of a "flattened-out" version of a sine wave. Instead of the voltage smoothly increasing from the negative maximum to the positive maximum and back again, it shifts suddenly from negative to positive, stays there for half a cycle, and then jumps to full negative and stays there for half a cycle, then repeats.
- Stepped wave is a quasi-square wave or sine wave - they are typically inexpensive power inverters that mimic a sine wave using a stepped waveform. The output waveform signal changes abruptly from zero volts to a maximum value, them abruptly again to a zero value. After a short off time, the signal then switches abruptly again to a maximum negative voltage and then abruptly again back to zero.
- Triangular wave is sometimes referred to as a saw tooth wave for its approximation to a saw blade.
User interface options for DC to AC inverters include,
- Local interface can be
- Analog front panels with
- Digital front panels with digital keypads and menus
- Analog front panels with
- Computer interfaceoptions include serial or parallel interfaces.
- Application software is used for control or for monitoring converter performance.
- Display type
- Analog meter or indicator
- Digital readouts
- Video display terminals.
- Forced air or fan cooling
- Battery charger
- An important environmental operating parameter to consider is operating temperature.
DC-AC inverters can be used in a wide range of applications including,
- High frequency
- High voltage
Related Products & Services
AC Power Sources
AC power sources provide alternating power and typically have adjustable output values for the testing of component response at various voltages, current and frequency levels.
Computer Power Supplies
Computer power supplies convert alternating current (AC) line to direct current (DC) line, needed by the computer.
Current sources provide reliable current for electrical component testing and for powering specialized components.
DC Power Supplies
DC power supplies accept an input power and output the desired form of DC power. Common types of DC power supplies include linear power supplies, switching power supplies, DC-DC converters, and silicon controlled rectifier (SCR) type power supplies.
DC-DC converters accept DC input and provide regulated and/or isolated DC output in various applications including computer flash memory, telecommunications equipment, and process control systems.
Power supplies are electrical devices that deliver electric power to one or several loads. They generate the output power by converting an input signal into an output signal.
RF generators and high frequency power supplies provide the power required for plasma generation, induction heating, and radar or communications applications.