Design and Test Stripboard Projects Using LochMaster

Design and Test Stripboard Projects Using LochMaster 

Loch master is yet another tool from ABACOM, the software provider who gave Sprint-Layout, sPlan, Sprint Layout, Frontdesigner, Profilab and many other tools for design and simulation of electronic circuits. Lochmaster is basically a developers tool for strip board projects. The latest version available for download is Lochmaster 3.0

What makes this unique?Loch master software allow users to design, document and simulate/test boards. The software is equiped with fuctions like auto generation of components list, connection test, large library of components & symbols. Also it provides an option to allow users to create custom components and extend the existing component library.

 The predefined bord layout is another attraction but the developer has the freedom to draw his own board specifications with the board editor integrated to this software. Under testing the designed circuit board, developer can identify the unwanted signal. Various design and print options are make this a unique stripboard tool.

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Demoversions are availabe for free Download Here LochMaster 3.0 Demo Only 2.6MB Sized

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Firecracker Igniter Using 555

Firecracker Igniter Using 555 

Firecrackers are usually ignited by using a matchstick or candle. But this method has high risk factor so you have to run away after igniting the firework. The circuit described here allow you to ignite the fireworks from a safe distance using a an infrared remote control of your TV or DVD.

The core of the circuit is an infrared receiver moduleTSOP1738 and a 555 IC. When any key on the remote control is pressed, output pin 3 of the IR receiver module goes low. this output is connected to pin no. 2 of the 555 IC via LED1and resistor R4 to trigger the monostable operation of IC1.

The output of IC1 remains high for a time period equal to 1.1×R2×C2 (approx 3.5 seconds). After that the relay is activated and red LED3 indicates that the firecracker is about to burst. R7 is a heater element which is kept away from the electronic circuit and connected to the relay contacts through a thick electric cable. The resistance value of short length of the heater element should be 3 to3.5 ohms.A current about 4A flow s though the heater element to make it hot which will result in ignition of the firecracker.

       Notes

• The circuit requires 12V battery with 7AH.
• Assemble the circuit on a common PCB and enclose within a metallic cabinet.
• Wiring of the circuit should be capable of handling the 5A current flow

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Mohammed Hasif C
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Electronics and Modern Trends

Electronics and Modern Trends 

By a giving a general awareness about electronics technology. The word electronics is derived from electron mechanics which means study of of behavior of an electron under different conditions of externally applied fields. While comparing with other technologies, electronics technology is a new kid in town. I must say this because electronics is one technology which rapidly changes its face during everyday.

Life today offers many conveniences which involves the use of electronic devices and circuits. As we see around us, electronics plays a major role in almost every part of our life.

Applications of Electronics

1. Communications and Entertainment
2. Defense Applications
3. Industrial Applications
4. Medical Sciences
5. Instrumentation.... and blablabla...the list going on

Modern Trends in Electronics From the begining of electronics (1906) till now, electronics field is growing rapidly, as i said before. The change become bombarding on the invention of transistor which changes the entire face of electronics. Within almost ten years of its discovery, the process of miniaturization of electronic equipments had gained momentum.The invention of IC chips make the growth further. The vast changes that have taken place during the last 20 years can best be understood by nothing but the reduction in size and cost of modern digital computers. A small modern mini computer is more than 100 times ssmaller in size and 1/100th of the price of a computer designed 20 years back to do similer jobs.


Well, What You can get from Here?

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LED Based Automatic Emergency Light

LED Based Automatic Emergency Light 

Here is a white LED based low cost emergency light that offers high brightness, automatic activation, automatic charging with the use of cheap components. The circuit is very simple in construction and we can use the emergency light up to  6++ hours on battery feed.

As we know the power supply have been regulated by the the LM317 IC and produces a 7 volts output for charging the battery. when the battery gets charged to 6.8V the zenar ZD1 conducts and the IC1 output get shorted to ground through T1 so it stops charging. The transistor BD140 drives the out put LED's.

Assemble the circuit on a general-purpose PCB and enclose in a cabinet with enough space for battery and switches. Mount the LED's on the cabinet such that they light up the room. A hole in the cabinet should be drilled to connect 230V AC input for the primary of the transformer.

Note: it is better to connect a proper size heat sink to BD 140 and LM317. The output of LM 317
must be configured to 7v by adjusting the potentiometer.

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Mohammed Hasif C
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Automatic Night Lamp Circuit

Automatic Night Lamp Circuit 

It is very convenient to light a lamp in our absense in the eving when it gets dark. This automatic night lamp circuit can be used to light staircase light, porch light etc automatically using domestic powersupply. It is very in expensive in construction and we dont have to employ or depend anybody to put on the lights when we are out of station. We can connect a CFL in place of filament lamp by making necessary alterations to the circuit.

An SCR and LDR together plays the role of automation in this circuit. In figure, the resistance of LDR is low during daytime and high during night. So the required trigger pulse is developed across the SCR when it becomes dark and it is applied acrosss the gate cathod terminals and SCR is triggered and the circuit is closed.

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                                                                                                          Mohammed Hasif C                   
                                                                                                          Hasifnoor_Attasheri
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Water Activated Sensor Alarm Using 555

Water Activated Sensor Alarm Using 555 

Here is a circuit diagram of water activated sensor alarm using 555 IC.We may use this circuit for the following applications:

•  Water leakage detection from water tank and can be used as a water leak alarm
•  To detect presence of rain outside the room
•  Do detect the presence of moisture or water molecules on a substance
•  Used as detector of water in water overflow alarm

 Also we can fix this circuit anywhere in the basements and roof parts to detect any type of water leakage.

 

 

The circuit comprises a 555 IC as the core. This is designed to work as an astable multivibrator. When we connect a positive 9 volt to pin no. 8, the circuit will produce a sound through speaker.  But here the connection to pin 8 goes through the transistor BC 109c or BC 548. In this condition, the base of the NPN transistor haven't any positive voltage. But when the resistance between the "contacts" is lower due to water, the transistor get it base voltage and the circuit will produce a sound.

Working

We can connect the the 555 output pin no. 3 to loudspeaker through a 100uF electrolytic capacitor. The resistors, R1 and R2 are used for IC biasing. We can change the tone of the sound coming from the speaker by changing the value of capacitor C1.

 

 

 

Visitor Alarm Secret Bell

Visitor Alarm Secret Bell

This circuit can acts as a visitors alarm as well as a secret bell which can be used to identify family members. If you'e living in flats, it'll become necessary to verify the visitor before opening the door. This circuit senses single puff of breath and activates a musical bell automatically.

Working of the circuit

The core of this simple circuit has an NE555 timer and a well-known UM-66 musical IC. You need to fit the condenser mic inside the existing calling bell switch. Obviously, the mic will sense the air pressure changes following the breath. So it can trigger the alarm. On the other side, only you family members know about this system, hence they puff out before the hole, the door can be opened without any hesitation. 

The BC 549 transistor act as an amplifier to boost the sinals received from the mic, it triggers the monostable wired NE555 IC. The power from this IC1 will trigger IC2 UM66 which generate music tone for a short period of time. The monostable timing period can be set by resistor R7 and capacitor C5.

                                                                

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                                                                                                                Hasifnoor_Attasheri
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