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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.
….(electronic schematic added 11/08) |
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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….(circuit design added
08/08) |
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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 adj by VR1-1K. IC LM338 to hold heat-sink. Transformer is 20A up. ….(electronic
schematic added 11/08) |
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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 ….(design added 08/08) |
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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.... (added
4/05) |
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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.... (added
4/05) |
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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 ….(added 08/08/08) |
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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 tansistors
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....(circuit added
02/09) |
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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). Your local electronics shop or model railway
supply will have these .....(Added 05/09) |
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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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40A Power Supply Unit - Capable of running at full power at 100% duty cycle.
….(design added 11/08) |
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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…..(circuit design added 09/08) |
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555 DC-AC Inverter - (Tony van Roon's circuit added 9/04) |
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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. (electronic design
added 08/08) |
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A very simple inverter - You can use this to light up fluorescent tubes from a DC
source. Excellent way to recycle your dead fluorescent bulbs and energy saver lamps.
Contents: Schematics, diagrams, PCBs, and photos.….(electronic schematic added 08/08) |
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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 - 08/02/01 - EDN-Design Ideas: (design idea
added 09/03) |
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Caps Provide Voltage Boost To Series Regulator - This circuit adds some capacitors
and diodes to a traditional transformer type series regulator circuit to extend the
normal operating range. It can insure regulation during low line voltage conditions or
it can squeeze a few more watts out of a plug-in-the-wall power adapter power supply.
….(designed by David A. Johnson) |
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Choosing DACs for Direct Digital Synthesis - AN-237 Analog Devices Application
Notes (app note added 6/06) |
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Circuit Converts 5V To 10V - 05/26/05 - EDN-Design Ideas: Switched-capacitor
circuit doubles, inverts dc source.....(design idea added 6/06) |
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Circuit converts DAC's outputs from single ended to differential mode - 06/08/06 -
EDN-Design Ideas: This design suits low-end ac applications or high-precision
level-setting applications that rely on a single-ended current-output DAC.....(design
idea added 05/07) |
