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.

Submitted By
Mohammed Hasif C
hasifnoor_Attasheri
Thank You
God Bless You

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

Submitted By
Mohammed Hasif C
hasifnoor_Attasheri
Thank You
God Bless You

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

Submitted By
Mohammed Hasif C
hasifnoor_Attasheri
Thank You
God Bless You

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?

Submitted By
Mohammed Hasif C
 hasifnoor_Attasheri
Thank You
God Bless You

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.

Submitted By
Mohammed Hasif C
hasifnoor_Attasheri
Thank You
God Bless You

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.

                                                                                                         Submitted By
                                                                                                          Mohammed Hasif C                   
                                                                                                          Hasifnoor_Attasheri
                                                                                                          Thank you !
                                                                                                          God Bless You

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.

                                                                

                                                            Submitted By
                                                                                                                Hasifnoor_Attasheri
                                                                                                    Thank you !
                                                                                                         God Bless You

Water Level Indicator With 7-Segment Display

Water Level Indicator With 7-Segment Display 

Circuits available for indicating water level is usually consist of LEDs to indicate the liquid level. But this circuit uses a 7-segment LED display instead of normal LED's for numeric display of water level.Moreover, a buzzer is used to alert you of water overflowing from the tank. The circuit shows the water level by displaying L, H and F for low, half and full, respectively. You can use this circuit for water tank motor control or a stand alone circuit.

This circuit uses Five sensors to sense water levels in the tank. When the tank is empty, the input

pins of IC 7404 (NOT gate IC) are pulled high via a 1M ohm resistor. So it outputs a low voltage. As water starts filling the tank, a low voltage is available at the input pins of the gate and it outputs a high voltage.

When the water in the tank rises to touch the low level sensor, pin 5 of gate N3 gets a low voltage and results in high output at pin 6. Pin 6 of the gate is connected to pin 10 of gate N9, so pin 10 also goes high. Now as both pins 9 and 10 of gate N9 are high, its output pin 8 also goes high. As a result, positive supply is applied to DIS3 and it shows ‘L’ indicating low level of water in the tank.
Similarly all levels are displayed in the numeric display.

Assemble the circuit on a strip board and enclose within a non corrosive material. Use a 5V regulated supply for powering the circuit.

                                                                            Submitted By
                                                                                                                              Hasifnoor_Attasheri
                                                                                                          Thank you !
                                                                                                          God Bless You

Infrared Burglar Alarm Using Remote control

Infrared Burglar Alarm Using Remote control 

There are so many circuits available for infrared Burglar alarm but transmitter  section of these burglar alarm circuits are complicated and you may have assemble it yourself. But here is burglar alarm circuit that uses the ordinary DVD remote as the transmitter. So not only the cost also the man power will be saved.  You only need to press and hold any switch of the remote control to allow flow of IR signals to outside. This can be done by grafting any key of the remote using insulation tape. This house alarm is very useful and doesn't require much components.

WorkingThe transmitter and receiver circuit must be fixer either two side of the gate or door.Now the IR signal from the remote control recieved by the sensor TSOP 1738 and give it to the 555 IC input. The output of the 555 IC will be high only when it recieves the signals and this biases the transistor BC107 so the relay is activated. Whenever any obstructives come between the transmitter and receiver, the 555 output become low and the transistor SL100 that connected to the relay will be on and the UM66 will produce an alarm sound.

Note

• Assemble the circuit in a common PCB
• Supply voltage to the circuit is 9V
• 3V is required to operate the remote
• The sensitivity range is maximum 8 meters

                                                                                                         Submitted By
                                                                                                                              Hasifnoor_Attasheri
                                                                                                          Thank you !
                                                                                                          God Bless You

Water Tank Controller Circuit

Water Tank Controller Circuit 

Here is an automatic water tank controller that controls the operation of a water pump through a 12V 10amp relay. When ever the water level of the tank short circuits the points A and B in the circuit diagram, the pump get turned off automatically. This home water pump controller circuit is comparably simple and low cost and can be assembled easily on a common PCB.

water tank controller hasifnoor_Attasheri 9744665935

Working

The circuit schematic diagram of the tank controlller is given on the image. Whe the switch S1 in the circuit is pressed, a biasing will get to the transistor Q1 through resistor R1 and the relay will be turned on. So the pump connected on the relay will also switched on. We can place the terminals A and B in the upper side of the water tank. Whenever the water shortcircuits these points, the Q1 transistor will be on and the relay will cuttoff and the motor also turned off.

Notes

• Make sure that all resistors used in the circuit is 1/2 W.
• The relay power rating can be varied according to the motor ratings.

Burglar Alarm System With High Sensitivity 

Burglar Alarm System With High Sensitivity 

Most standard light sensors that used in ordinary burglar alarm systems requires precise alignment of light beam to deactivate the alarm system during standby mode. However this circuit of burglar alarm is so sensitive that it will detect a moving person at a distance of few meters in pure daylight or under electric lighting.It requires virtually no set up, and may be simply placed within the line-of-sight of almost any light source including ambient daylight or high end fluorescent electric light. The alarm system uses a beep generated from the circuit driven through a buzzer that is high enough to detect the entry of a person inside the fence.

This security system uses a op amp comparator 741 with two potential dividers in its inverting and non inverting inputs. (about half of supply voltage). The burglar detector LDR and its controlling preset VR1 from another potential divider to provide a variable input to NIV input pin 3.

Adjust VR1 properly then output of 555 ic will be high because of the LDR effect. Ie when the shadow of a person come across the LDR light path, its light intensity level and the voltage at the non-inverting input of IC1 will drop momentarily.The output of IC1 suddenly becomes low, allowing T1to conduct. This triggers the monostable (IC2) and the alarm sounds.

You can easily set up the circuit in a common PCB and keep Keep LDR1 inside a black tube to increase its sensitivity. On testing with ideal conditions, the alarm system detected a person from a distance of about three meters.

                                                                          Submitted By
                                                                                                                              Hasifnoor_Attasheri
                                                                                                      Thank you !
                                                                                                          God Bless You

Simple Floor Mat Switch

Simple Floor Mat Switch 

This cool 555 IC circuit produces a warning beep when some one enters or crosses the prohibited area in your house or office. The switch can be hidden under floor mat, triggers the circuits to produce a beep when  someone presses it by foot.

Circuit diagram of mat switch

The switch that place under mat is of two conductive foam. It can be constructed by using two thin metal foils gummed together on opposite sides of a card board.  When the circuit switch is open, the transistor T1 is on off state since the lack of forward biasing at the base. When the switch closes by a an external object,  T1 will be on and it's collector voltage drops. This acts as a trigger input for IC 555.

Sound is produced for 50 seconds with preset values of R4 and C3. the pulse is applied through transistor T2. The duration of pulse can be changed by changing the values of R4 and C3.

                                                                                                          Submitted By
                                                                                                                              Hasifnoor_Attasheri
                                                                                                          Thank you !
                                                                                                          God Bless You

LED Running Display Using NE555 -Submitted By Mohammed Hasif C

LED Running Display Using NE555

Here's a circuit to build a led based running display using easily available general purpose timer IC NE555 and a popular decade counter IC CD4017. This display consist of 24 LED's of four layers. The NE555 is wired as an astable multivibrator whose output triggers CD4017 counter.

Circuit diagram of LED based running effect display.

On powering up the circuit, timer starts oscillates to produce triggering pulses. This pulses trigger counter IC and it counts from 0 to 5. These outputs are fed to general purpose NPN transistors BC547 which are used as current drivers for each led layer. As each of the counter output goes hih, the curresponding led layer glows sequentially. After it counts upto 6 values, resets to zero and the process repeats.

How to display custom words using this circuit.

Suppose you want to display ‘STAR.’ Build letter S with L1,T with L2, A with L3 and R with L4.When the circuit is switched on, letter S glows first. Then S and T glow sequentially,followed by S, T and A, and thenS, T, A and R. When Q4 and Q5 outputs of the counter gohigh, the completeword ‘STAR’ glows.Thereafter, letter ‘S’glows again and the cycle repeats.

                                                                                                          

                                                                                                          Submitted By

                                                                                                                              Hasifnoor_Attasheri

                                                                                                          Thank you !

                                                                                                          God Bless You