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Converters: DC to
AC Circuits and Inverter Circuits
Power Supplies -- Main
Page
Converters -- Main Page
Last Updated on:
Saturday, June 27, 2009 04:42 PM |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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12 V DC: 120 VAC Inverter Schematic: An Inverter is a device that converts
12 volts DC to 120 volts AC. , which is what we use in our homes. This project
will handle about 300 watts, which is perfect for lights, small TV's and radio
equipment. This Inverter takes 12 volt DC and steps it up to 120 volt AC.
wattage depends on which transistors you use for Q1 and Q2, as well as "Amp
Rating" of transformer you use for T1. This inverter can be constructed to
supply anywhere from 1 to 1000 (1 KW) watts. If Q1, Q2 are 2N3055 NPN Transistors and
T1 is a 15 A transformer, n inverter will supply about 300 watts. Larger
transformers and more powerful transistors can be substituted for T1, Q1 and Q2 for
more power. Note: Don't try to run inductive loads (motors...) off this inverter.
(added 4/05) |
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12 Volt DC to 120 Volt AC Inverter: this inverter should solve that problem.
It takes12 VDC and steps it up to120 VAC. -Wattage depends on which transistors you
use for Q1 and Q2, as well as how "big" a transformer you use for T1. inverter
can be constructed to supply anywhere from1 to1000 (1 KW)-Watts. (added 4/02) |
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300ma DC-to-AC Converter: This circuit was used to provide battery backup to
a device that had an AC (output) wall transformer. Due to quasi-sine-wave output
and imprecise 60Hz output frequency, some devices might not work properly. Peak output
is DC input voltage minus about 20 ohms drop. Use bigger output MOSFETS for more
current output.
Designed by Andrew
R. Morris
(added 09/05) |
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555 DC-AC Inverter: (circuit added 9/04) |
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AN14 Transistor Considerations for LCD Backlighting: Zetec Semiconductors
Applications Notes A study of parametric requirements of Bipolar transistors for
self-oscillating resonant "Royer" inverter with respect to LCD backlighting, including
circuit behaviour, voltage ratings of most relevance to ensure optimised device
selection, and compact packaging options (app note added 9/06) |
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AN17 Emergency Lighting Systems and Battery Powered Fluorescent Lighting: High Current
To92 Switching Transistors Provide 87% DC-AC Conversion Efficiency: Zetec
Semiconductors Applications Notes An overview of principles behind typical
emergency lighting systems, fluorescent tube behaviour, and requirements of
transistors for efficient voltage inversion. The note also includes two "Royer" based
designs for low voltage systems. (app note added 6/06) |
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AN-237: Choosing DACs for Direct Digital Synthesis: AN-237 Analog Devices
Application Notes (app note added 6/06) |
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AN-327: DAC ICs: How Many Bits Is Enough?: AN-327 Analog Devices Application
Notes (app note added 6/06) Digital audio playback DACs are available in a
variety of different architectures--each with it's own performance tradeoffs. |
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Bidirectionall Power Inverter: (circuit added 1/07) |
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Bidirectionall Power Inverter: 08/02/01 Design Ideas EDN If you want
to swap charge in eir direction between unevenly loaded positive and negative battery
buses, you need an inverting dc transformer. One implementation is symmetrical
flyback converter shown in Figure 1 . The circuit can generate a negative output from
a positive supply or a positive output from a negative supply. When circuit
starts up, substrate diode of output FET bootstraps output voltage
to point where synchronous switching takes over. When gate-switching
signal is symmetrical, output voltage is approximately -95% of input
voltage, and efficiency is greater than 80%. You can obtain voltage step-up or
step-down by adjusting switching ratio. (added 4/05) |
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