Saturday

Making a Free Energy Generator Circuit - An Unsolved Issue


A request was sent to me by one of the readers Mr. Edward Pizzo (edpizzo@cox.net), regarding solving a circuit issue. The idea refers to a very interesting concept of acquiring free energy through a mechanism which once initiated keeps going  in quite a perpetual fashion. A charged battery #1 is used initially for starting an alternator which keeps running by utilizing the power from battery #1 and in the course generates enough power for running a few of the house appliances and for charging another battery #2. Once the earlier battery #1 gets discharged, the positions of the batteries (#1 and #2) are simply interchanged in order to keep the system running, almost forever.

Thursday

6V, 12V, 24V Battery Charger Circuit

A simple yet accurate automatic, regulated 6/12/24 volt lead acid battery charger circuit is explained in this article. The circuit switches off the current to the battery as soon as the battery reaches full charge. An illuminated LED at the output indiacates the fully charged condition of the battery.

Saturday

Thursday

Making a Customized Water Level Controller Circuit

This customized ideal water level controller circuit idea was proposed and requested to me by Mr. Bilal Inamdar. The designed circuit is presented here in the article along with the required specs, in  details.
The circuit is exclusively designed and drawn by me.

Sunday

How to Make Simple Solar Cooker at Home


If you are fed-up of ordinary inefficient solar cooker designs and wondering how to make a solar cooker that works in a truly effective way, then probably you have reached the right destination. A low cost solar cooker design that heats up instantly and actually cooks your food in minutes has been meticulously discussed here.
When it comes to making of solar cookers, harnessing solar energy most efficiently becomes one big criteria. The idea presented here is perhaps one of the fastest heating solar cooker designs.

How to Design Your Own Inverter Transformer

Designing an inverter transformer can be a complex affair. However, using the various formulas and by taking the help of one practical example shown here, the operations involved finally become very easy.
The present article explains through a practical example the process of applying the various formulas for making an inverter transformer. The various formulas required for designing a transformer has been already discussed in one my previous articles.

How to Make a 150 Watt Modified Sine Wave Inverter Circuit Using only Transistors

A very interesting circuit of a modified sine wave inverter is discussed in this article which incorporates just ordinary transistors for the proposed implementations. The use of transistors typically makes the circuit easier to understand and more friendly with the new electronic enthusiasts. The inclusion of a PWM control in the circuit makes the design very efficient and desirable as far as operations of sophisticated appliances are concerned at the inverter output.

The circuit diagram shows how the entire circuit is laid down. We can clearly see that only transistors have been involved and yet the circuit can be made to produce well-dimensioned PWM controlled waveform for generating the required modified sinew waveforms or rather modified square waves to be more precise.


The whole concept may be understood by studying the circuit with the help of the following points:

Basically we can witness two identical stages which are wired up in the standard astable multivibrator configuration.

Being astable in nature the configurations are specifically intended for generating free running pulses or square wave at their respective outputs.

However the upper AMV stage is positioned for generating the normal 50 Hz (or 60 Hz) square waves which are used for operating the transformer and for the required inverter actions, in order to get the desired AC mains power at the output.

Therefore there’s nothing too serious or interesting about the upper stage, typically it consists a central AMV stage consisting of T2, T3, next comes the driver stage consisting of the transistors T4, T5 and finally the receiving output stages consisting of the T1 and T6.

The output stage drives the transformer via the battery power for the desired inverter actions.


The above stage is only responsible for carrying out the generation of the square wave pulses that’s imperatively required for the intended normal inverting actions.

The circuit at the lower half is the section which actually does the sine wave modifications by switching the upper AMV according to its PWM settings.

Precisely, the upper AMV stage’s pulse shape is controlled by the lower AMV circuit and it implements the square wave modification by chopping the basic square inverter square waves from the upper AMV into discrete sections.

The above chopping or dimensioning is executed and defined by the setting of the preset R12.

R12 is used for adjusting the mark space ratio of the pulses generated by the lower AMV.

According to these PWM pulses, the basic square wave from the upper AMV is chopped into sections and the average RMS value of the generated waveform is optimized as close as possible to a standard sine waveform.








The remaining explanation regarding the circuit is pretty ordinary and may be done by following the standard practice that’s normally employed while building invertes, or for that matter, my other related article may be referred for acquiring the relevant information.

Parts List

R1, R8 = 15 Ohms, 10 WATTS,


R2, R7 = 330 OHMS, 1 WATT,


R3, R6, R9, R13, R14 = 470 OHMS ½ WATTS,


R4, R5 = 39K


R10, R11 = 10K,


R12 = 10K PRESET,


C1-----C4 = 0.33Uf,


D1, D2 =1N5402,


D3, D4 = 1N40007


T2, T3, T7, T8= 8050,

T9 = 8550


T5, T4 = TIP 127

T1, T6 = BDY29


TRANSFORMER = 12-0-12V, 20 AMP.


T1, T6, T5, T4 SHOULD BE MOUNTED OVER SUITABLE HEATSINK.


BATTERY = 12V, 30AH

How to Make a Simplest 150 watt MOSFET Inverter Circuit

The article explains a very simple yet powerful inverter circuit design which can be built by any electronic enthusiast and used for powering most of the household electrical appliances (resistive). The use a couple of mosfets influences a powerful response from the circuit involving very few components, however the square wave configuration does limit the unit from quite a few useful applications.

How to Make a Simple 200 Watt Modified Sine Wave Inverter Circuit, Using a Single IC 4093

The PWM controlled modified sine wave inverter circuit presented here uses just a single 4093 for the specified functions. The IC consists of four NAND gates, out of which two are wired up as oscillators while the remaining two as buffers. The oscillators are integrated in such a way that the high frequency from one of the oscillators interacts with the output of the other, generating chopped square waves whose RMS value can be well optimized to match the regular sine waveforms.

How to Calculate and Match an Inverter Circuit with Battery and Transformer

Making an inverter all by you can be definitely lot of fun. However if the results are not satisfactory can completely spoil the whole purpose of the project. Installing and configuring the various inverter parameter like the battery and the transformer to with the actual assembled circuit needs special care and attention for deriving optimal results from the assembly. The article broadly discusses how to calculate and match a battery and transformer wit the relevant circuit and also enlightens regarding the possible faults that might be encountered and the respective troubleshooting procedures.

Making a Sine Wave Inverter from an Audio Power Amplifier

If you are not too keen in understanding the deep technical aspects of a true sine wave power inverter, yet want to build it within a couple of hours, then this article will help you. It begins by explaining how a couple of small DC motors can be used for generating pure sine wave signals and then proceeds with the details of coupling the motors with a ready made power amplifier for acquiring the desired AC mains pure sine wave power output.

How to Build a Simplest Modified Sine Wave Power Inverter Circuit

If you are looking for a simple modified sine wave power inverter circuit design to build, then perhaps you have hit the bull’s eye here. The present article very explicitly deals with a circuit idea of the same that’s astonishingly simple and low cost with an output that’s to a very extent is comparable with its sine wave counterparts.

How to Make a Simplest 200 VA Uninterrupted Power Supply (UPS) Circuit

The simple UPS circuit discussed here is a PWM based design, so becomes perfectly safe for operating sophisticated electronic equipment like computers, music system etc. The entire unit will cost you around $3. A built in charger is also included in the design for keeping the battery always in a topped up condition and in a stand by mode. Let’s study the whole concept and the circuit.

Making a Simple Inverter Circuit


This super simple design of an inverter circuit does not limit it in any way from providing a high output power and an efficiency of a good 75%. Learn how to build an inverter that will satisfy most of your power requirement at quite an affordable cost.

Saturday

Tuesday

How to Make a Simple 12 Volt LED Lantern Circuit


We have discussed white LEDs comprehensively through many of my earlier articles and have learned how efficient these lights are with power consumption.

In this article we will study a very simple configuration for making a LED lamp or a LED lantern.

How to Understand and Use IC 4093 NAND Gates, Pin Outs


The IC 4093 may not have complicated specifications and attributes yet it proposes many useful utilities. It consists of some fundamental blocks which can be configured according to personal preferences and used for numerous different applications.

How to Become an Expert Electronic Hobbyist Here


Today our world is ruled by electronics. If there would be no electronics, we would be still reeling at the age that existed some 100 years ago. Basically electronics is all about making impossible concepts a reality. It’s like having hundreds of bees working together for producing the magical fluid called honey.

Monday

How to Make a LED Chaser cum Blinker Circuit Using IC 4017


  The presented circuit was requested by Mr.Joe, one of the keen followers of this blog. The circuit initially was intended to be used for generating LED strobe light effects and was asked to be modified such that it could be used as an LED sequencer as well as a blinker. The change over would be implemented via a toggle switch.

Sunday

Simple Infrared (IR) Remote Control Circuit

Controlling household electrical gadgets or any electrical equipment remotely can be fun.  Controlling gadgets like a TV set or a DVD player through a remote may look pretty common to us and we are very used to with the experience, however for controlling many other domestic equipment like a water pump, lights etc we are compelled to walk around for implementing the switching.

Friday

How to Configure Resistors, Capacitors and Transistors in Electronic Circuits

Kindly read my previous post regarding what is voltage and current, in order to grasp the below explained basic electronic facts more effectively.

What is a Resistor – It is an electronic component used for resisting the flow of electrons or the current. It is used to safeguard electronic components by restricting the flow of current when voltage increases.

Thursday

How to Understand and Use white LEDs – Datasheet


White LEDs are the future lighting solutions for our cities and homes. They will be easily replacing the traditional CFL and other flurescent types of light producing devices. LEDs are extremely efficient when it comes to power consumption issues and are also highly durable and reliable with its specified features.

Wednesday

How to Make an Automatic 12 volt Battery Charger Circuit Using IC LM 338

The IC LM338 is an outstanding device which can be used for unlimited number of potential electronic circuit applications. Basically the main function of this IC is voltage control and can also be wired for controlling currents through some simple modifications. Battery charger circuit applications are ideally suited with this IC and we are going to study one example circuits for making a 12 volt automatic battery charger circuit using the IC LM338.