touch alarm circuit

a very simple touch alarm circuit for mini projects

very simple touch alarm circuit

Required parts

1.speaker
2.bc547
3.resistors
       1.10k
       2.100k
4.diode
5.mobile charger

simple water alarm circuit

                                  water alarm circuit 

here shown water alarm circuit is very simple it can be used as water alarm by using warter alarm we can be relief and sit in house and when water comes and touches the wire the alarm goes on
and it is very very simple only needs 6parts

Required parts

1 .Resistors 1)10  K
              2)100 K
2 .Transistor
               1)BC547
3 .Speaker
4 .Battery
5 .Wires

connect as per fig and enjoy the invenction

transformerless inverter circuit

The article explains a very simple method of acquiring 220V AC from a 12v DC source. The idea utilizes inductor/oscillator based boost topology with the help of the IC 555.

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                                                     for more click here

very very easy inverter circuit 500va or 500w

Here is a simple but powerful, stable and efficient schematic diagram for a 500w modified sine wave inverter circuit. Originally I used a 555 timer and a decade counter to produce the modified sine wave, but then I thought a simple PIC micro controller with its internal clock would produce a stable 50Hz frequency without the need . As you can see its a very simple circuit.



                                      click here for circuit

modified sine wave inverter circuit 500va

How to Make a 500 VA PWM Controlled Modified Sine Wave Inverter Circuit

This unique modified sine wave inverter concept has been designed and invented by me. The entire unit along with the oscillator stage and the output stage can be easily built by any electronic enthusiast at home. The present designed is able to support 500 VA of output load.
WARNING: The unit has not been tested practically, viewers discretion is advised.

Let's try to understand the circuit functioning in details:


The Oscillator Stage:

                                           
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very very easy inverter circuit 400va or 400watts

Make 400 watt MOSFET Sine Wave Inverter CircuitThe post explains probably the most easiest 400 watt sine wave inverter circuit, which requires lowest number of components and yet is able to produce optimum results. The circuit was requested by one of the active participants of this blog.

The circuit is not actually a  sine wave in true sense, however it's the digital version and is almost as efficient as its sinusoidal counterpart.

From the circuit diagram we are able to witness the many obvious stages of an inverter topology. The gates N1 and N2 form the oscillator stage and is responsible for generating the basic 50 or 60 Hz pulses, here it has been dimensioned for generating around 50 Hz output.

                                            click here for circuit

very easy inverter circuit

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.

                                             
                                                    click here for more