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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)
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)
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)
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)
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..
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....
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
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)
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
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
40A Power Supply Unit - Capable of running at full power at 100% duty cycle. ….(design)
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)
555 DC-AC Inverter - (Tony van Roon's circuit)
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)
A very simple inverter - This DC to AC inverter circuit work based on unstable multi vibrator does. In this circuit, IC CD4047 is chosen as a heart of unstable multivibrator, because this IC type gives a complementary output that has opposite phase to another (pin 10 and 11 as seen in Figure 1), and has 50 % duty cycle that satisfy to generate a pulse for inverter.
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)
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)
AN-237: Choosing DACs for Direct Digital Synthesis - AN-237 Analog Devices Application Notes  (app note)
AN-327: DAC ICs: How Many Bits Is Enough? - AN-327 Analog Devices Application Notes  (app note 6/06)  Digital audio playback DACs are available in a variety of different architectures--each with it's own performance tradeoffs.
Bidirectionall Power Inverter - 08/02/01 - EDN-Design Ideas:  (design idea)
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)
Choosing DACs for Direct Digital Synthesis - AN-237 Analog Devices Application Notes  (app note)
Circuit Converts 5V To 10V - 05/26/05 - EDN-Design Ideas:  Switched-capacitor circuit doubles, inverts dc source.....(design idea)
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)
Circuit Makes Simple High Voltage Inverter - 05/27/04 - EDN-Design Ideas:  A simple high-voltage MOSFET inverter solves the problem of driving a high-side MOSFET, using a low-voltage transistor and a special arrangement involving a blocking diode.....(design idea)
Classic Plus and Minus DC Power Supply - This is a classic example of a regulated DC power supply that produces both a positive 15v and a negative 15v from a 20vac wall adapter.
CMOS inverters convert RF to digital signal - 01/05/06 - EDN-Design Ideas:  Hex-inverter-based design suits frequencies up to180 MHz.....(design idea)
DAC ICs: How Many Bits Is Enough? - AN-327 Analog Devices Application Notes  (app note) Digital audio playback DACs are available in a variety of different architectures--each with it's own performance tradeoffs.
Fluorescent Inverter - Build this 20 watt Fluoro Inverter,  it drives two 20-watt tubes or a 40-watt tube!….(electronic circuit)
Fluorescent Lamp Inverter - This inverter is very easy to construct, reliable, and even powerful enough to light up a 15W florescent tube (if you cool your transistor well). The only hard-to-find piece of this baby is the so-called yellow inverter transformer. It's a miniature high frequency transformer that has a 25mm x 20mm x 5mm ferrite core, 30 turns of primary, 15 turns of feedback, and 250 turns of secondary all concentric, wound on plastic frame than wrapped with a 'yellow' adhesive tape. If you can't find it in your local electronic shops then search for old portable rechargeble florescent lanterns since they have at least one yellow inverter. Of course you can wind a handmade transformer which would do the same but it is a very difficult task when you don't have an original to inspire and it will still need an appropriate ferrite core. ….(design)
Inverter (Aaron Cake) - 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. (schematic / circuit)
LOW POWER 12,000 VOLT POWER SUPPLY -  If you need about 12,000 volts DC for an ion generator this circuit might be the ticket. It draws power from the 120vac power line but it uses a small 6KV camera flash trigger coil. The output signal is isolated from the power line. Although the circuit can only deliver about 5uA of current it can produce dangerous shocks, so be careful. ….(designed by David A. Johnson)
Miniature Isolated AC/DC Power Supply - This circuit uses a novel approach to produce a fully isolated and regulated 5 volts @30ma from the 120vac power line. It uses two tiny SCRs that alternately discharge two capacitors through a miniature high frequency transformer. The voltage spikes produced through the transformer are rectified, filtered and regulated. A very common 8 ohm audio impedance matching transformer can be used for the transformer. Published in EDN, Feb. 17, 1992 ….(designed by David A. Johnson)
MOSFET Power Inverter - A Very Reliable. Efficient and Practical Design....(electronic schematic)
Non-isolated Off-line AC to DC Power Supply - This compact efficient circuit can provide up to 100ma of a regulated 5 volts from an AC power source ranging from 20vac to 120vac. ….(designed by David A. Johnson)
Power inverter is bidirectional - 08/02/01 - EDN-Design Ideas:  If you want to swap charge in either direction between unevenly loaded positive and negative battery buses, you need an inverting dc transformer. One implementation is the symmetrical flyback converter shown in Figure 1. The circuit can generate a negative output.....(design idea) 09;/03).....(design idea)
Simple Inverter - This circuit will provide a fairly stable "Square Wave" Output Voltage.....(electronic schematic)
Voltage Inverter - (electronic circuit)
Voltage Inverter (Aaron Cake) - simple low power design based on555
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