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12 to 120 Volt Inverter - Ever needed a low power 120volt
AC power source for your car, van or truck? Well this circuit
should do the trick for you. It will supply 15 watts of AC power
to a device. It should power lamps, shavers, small stereos and
small appliances. If you draw to much power the circuit will
shut down all by itself. The output of this circuit is a square
wave. |
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12 VDC: 120 VAC Inverter Schematic - This Inverter takes 12
volt d.c and steps it up to 120 volt a.c. The wattage depends
on which transistors you use for Q1 and Q2, as well as the "Amp
Rating" of the transformer you use for T1. This inverter can be
constructed to supply anywhere from 1 to 1000 (1 KW) watts. |
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12 Volt 20 Amp Power Supply - A 12 Volt high current 20
Amp power supply. The output voltage is variable from 12.2 Volt
to 14.4V so can be set for any device requiring voltage and
current in that range. This PSU uses an LM723 as the regulator,
4 parallel connected outboard pass transistors and has current
limiting above 25 amps.... [Circuit Design by Andy Collison] |
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12 Volt DC to 120 Volt AC Inverter (Aaron Cake) - This
Inverter takes 12 volt d.c and steps it up to 120 volt a.c.
The wattage depends on which transistors you use for Q1 and Q2,
as well as the "Amp Rating" of the transformer you use for T1.
This inverter can be constructed to supply anywhere from 1 to
1000 (1 KW) watts. |
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0-28V 6-8A Power Supply (LM317, 2N3055) - This is an easy
to make power supply which has stable, clean and regulator 0-28V
6/8 Amp output voltage. By using two 2N3055 transistors we
become more then 2 times the amount of amps then the power
supply delivers, making it real though to brake ;). Although you
could use this design to deliver 20 amps (with almost no
modifications and with a proper transformer and a huge heat sink
with a fan), I did not needed such much power. Make sure you
mount them on a huge heat sink, as the 2N3055 transistors can
get very hot at full load. |
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0-30 VDC Stabilized power supply with current control 0.002-3 A
- This is a high quality power supply with a continuously
variable stabilised output adjustable at any value between 0 and
30VDC. The circuit also incorporates an electronic output
current limiter that effectively controls the output current
from. |
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0-30V 20A High Power Supply with LM338 - This is High
current and Adjustable Volt 0 to 30V 20A. It easy circuit and
nice circuit, Because use IC LM338 and IC 741. Volt Output
adjust by VR1-1K. IC LM338 to hold heat-sink. Transformer is 20A
up. |
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12 Volt to 120 Volt Inverter (randy Linscott) - Ever needed
a low power 120volt AC power source for your car, van or truck?
Well this circuit should do the trick for you. It will supply 15
watts of AC power to a device. It should power lamps, shavers,
small stereos and small appliances. If you draw to much power ….
[Randy Linscott, designer] |
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12VDC To 120VAC Inverter - Have you ever wanted to run a
TV, stereo or other appliance while on the road or camping?
Well, this inverter should solve that problem. It takes 12 VDC
and steps it up to 120 VAC. The wattage depends on which
transistors you use for Q1 and Q2, as well as how "big" a
transformer you use for T1. The inverter can be constructed to
supply anywhere from 1 to 1000 (1 KW) watts. |
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2 Amp Power Supply - This handy power supply has an output
of 0v to 12v at 700mA with a transformer that is rated at 1-amp
(such as M-2155) or 1.4amp for a transformer that is rated at
2-amp (such as M-2156). |
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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 |
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40A Power Supply Unit - Capable of running at full power at
100% duty cycle. |
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500W low cost 12V to 220V inverter - Using this circuit you
can convert the 12V dc in to the 220V Ac. In this circuit 4047
is use to generate the square wave of 50hz and amplify the
current and then amplify the voltage by using the step
transformer. |
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555 DC-AC Inverter - This DC-to-AC inverter schematic
produces an AC output at line frequency and voltage. The 555 is
configured as a low-frequency oscillator, tunable over the
frequency range of 50 to 60 Hz by Frequency potentiometer R4.
The 555 feeds its output (amplified by Q1 and Q2) to the input
of transformer T1, a reverse-connected filament... [Tony van
Roon's circuit] |
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6v to 12v Converter - This inverter circuit can provide up
to 800mA of 12V power from a 6V supply. For example, you could
run 12V car accessories in a 6V (British?) car. The circuit is
simple, about 75% efficient and quite useful. By changing just a
few components, you can also modify it for different
voltages.... [Circuit designed by Aaron Cake] |
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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 |
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AN17 Emergency Lighting Systems & 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. |
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AN-237: Choosing DACs for Direct Digital Synthesis - AN-237
Analog Devices Application Notes |
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AN-327: DAC ICs: How Many Bits Is Enough? - AN-327 Analog
Devices Application Notes Digital audio playback DACs are
available in a variety of different architectures--each with
it's own performance tradeoffs. |
